polybutene structural formula polybutene structural formula

| Principal Consultant, Bradley Consulting Services, Corrosionpedia The online hub for corrosion professionals, Copyright 2023 MIC Corrosion: How Can Microorganisms Eat Holes in a Metal? If you have linked your Google Analytics and Google Ads accounts, Google Ads website conversion tags will read this cookie unless you opt-out. It was developed by Britain's Imperial Chemical Industries (ICI).[3]. synthetic additive ; bulk acidulants ; common food emulsifiers ; Once cooled, it turns into a soft, elastic material due to its partially tetragonal crystal structure. Other features include low noise transmission, low linear thermal expansion, no corrosion and calcification. This website participates in the Formula Botanica, Baraka Shea Butter . Butane: Butane has only single bonds. [8], International standards set minimum performance requirements for pipes made from PB-1 used in hot water applications. Straight Hydrogenated Polyisobutene is a much thinner liquid that doesnt have the same tacky richness that polybutene does. It also has low creep, excellent chemical resistance, and abrasion resistance with coilability. Those have two functions: On the one hand they are providing basic functionality for this website. Ive used it at 2070% in lip products. A polybutylene terephthalate resin composition is disclosed containing, with respect to 100 parts by mass of a polybutylene terephthalate resin (A) having a carboxylic acid terminal group of 35 meq/kg or less, 0.5 parts by mass or more and 10 parts by mass or less of an epoxy-based resin (B), and a quaternary ammonium salt (C); a molded article comprising the polybutylene terephthalate resin . I love the expensive, substantial feel it adds to lip formulations. With customers located all over the world, our PIB team acts globally by maintaining strong and caring . Matrix-assisted laser desorption/ionization mass spectrometry of discrete mass poly(butylene glutarate) oligomers. Why is it used in cosmetics and personal care products? Polybutenes undergo combustion, pyrolysis, and autoxidation; the latter two can occur during analytical treatment. May react exothermically with reducing agents to release hydrogen gas. Polybutylene terephthalate (PBT) is a thermoplastic engineering polymer that is used as an insulator in the electrical and electronics industries. Polybutene-1 polymers, unlike polybutene, have high . By: Mohamed Adel Mohamadein Their low polarity, low degree of unsaturation, and their closely packed, branched-chain molecular structure make Polybutenes resistant to chemical reaction. Chemical Composition. Example 1: Draw the 2-dimensional (full display) structural formula for but-2-ene (2-butene), C 4 H 8, given the skeletal formula shown below: Skeletal formula of 2-butene Place a carbon atom at the end of each line (or where two or more lines meet) 31 0 obj <>stream (Select up to 3 total.) A maximum concentration of 82.4% for leave-on products and 20% for rinse off is listed for polybutene (this lower rinse-off level is likely due to it being very difficult to rinse off). thermoplastic polymer, insulator in the electrical industry. Adhesives On these pages we offer starting point formulations for pigment concentrates for the use in Decorative Coatings, General Industrial Coatings, Wood and Furniture Coatings and Household, Industrial and Institutional Cleaners, Polishes and Laundry Detergents. . Problems with leaks and broken pipes led to a class action lawsuit, Cox v. Shell Oil, that was settled for $1 billion. Soluble in benzene, ether, chloroform, n-heptane and n-hexane, almost insoluble in water, NNN. The molecular weight of the end product is limited by the reaction temperature used in the chamber. | Pipeline Coatings Application Consultant, Crest Industrial Chemicals, By: Steven Bradley Molecular formula The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. May react exothermically with reducing agents to release hydrogen gas. Peelable easy-to-open packaging where PB-1 is used as blend component predominantly in polyethylene to tailor peel strength and peel quality, mainly in alimentary consumer packaging and medical packaging. Enter a chemical name, synonym or CAS# below to search. After 12 months of testing, five animals from each group were killed for evaluation. J. Ophthalmol. Polybutene is available in a variety of grades. Polybutene is a polymer of one or more butylenes obtained from petroleum oils. Polybutylene is produced by polymerisation of 1-butene using supported ZieglerNatta catalysts. 1-Butene is linear with a formulation of CH 2 =CHCH 2 CH 3. It has similar properties and composition to polyethylene terephthalate (PET). It is used to make up for the shortcomings of polyvinyl acetate hardening when cold, and the population is too soft after saliva, and the amount of polyvinyl acetate accounts.Buy Polybutenes.Molecular Fomula:C8H16,Molar Mass:112.21264,Density:0.908g/mLat 25C,Melting Point:94.3-104.8 C,Boling Point:293-341 C,Flashing Point:>230F,Vapor Presure . In extreme cases, this stress-activated chemical "corrosion" can lead to perforation and leakage within a few years, but it also may not fail for decades. In guaranteed quality, at stable prices, packed appropriately for transportation and delivered punctually. The Skin Deep ingredient hazard score, from 1 to 10, reflects known and suspected hazards linked to the ingredients. Youll need to begin by determining why polybutene is being called for in a formulation. The two ingredients are lovely when paired, but they arent interchangeable. View Full Term. Our polybutenes are used in adhesives and sealants, rubbers, and a number of other applications. Subscribe to our newsletter to get expert advice and top insights on corrosion science, mitigation and prevention. Tianjin heowns Biochemical Technology Co., Ltd. Chizhou Kailong Import and Export Trade Co., Ltd. TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III), TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III), 1,2-Ethanediamine, reaction products with chlorinated isobutylene homopolymer, Polybutenes Iupac Name but-1-ene. On the other hand they allow us to improve our content for you by saving and analyzing anonymized user data. Colorless to yellowish viscous liquid, tasteless, odorless or micro-cream special mother odor. Necessary for Google Maps. Its vegan, stable, crystal clear, and doesnt smell like anything. missing translation: 82(5) , 569-76, (1998). We can supply them. Showing 1-1 of 1 result for " polybutene " within Products. +undefined-86-13650506873 +undefined-86-13650506873. Polybutenes mainly differ from each other in terms of their molecular weight andviscosity. Caulk and sealants Don't miss the latest corrosion content from Corrosionpedia! Polybutene is a light colored, nondrying, sticky liquid. . Polybutene is a particularly suitable additive in rubber production. Find polybutene and related products for scientific research at MilliporeSigma . Carbon dioxide, dry chemical, or foam (USCG, 1999) Non-Fire Response. Polybutene films have a high resistance to stress cracking, and low stress deformation. 9003-28-5 Chemical Name: Polybutene CBNumber: CB0316097 Molecular Formula: C4H8 Molecular Weight: 56.10632 MDL Number: MFCD00084367 MOL File: 9003-28-5.mol Request For Quotation Polybutene Properties SAFETY WGK Germany 3 Polybutene Chemical Properties,Uses,Production Chemical Properties Drawing the Structural Formula Given the Skeletal Formula . 2,5-Furandione, dihydro-, polybutenyl derivs., reaction products with tetraethylenepentamine, Calcium, nonylphenol sulfides phosphosulfurized polybutene complexes. Posted on May 31, 2022 by May 31, 2022 by Used as unique user identifier. According to CTFA (2006b), laboratory tests with approved surrogate systems/animals revealed that skin contact testing showed only slight irritation (primary dermal irritation score [PDIS] of 1.5/8.0). This information is used to compile report and improve site. If not, you probably wont miss it. They are suitable for making lubricants, adhesives, sealants, pipes, rubber and food packaging films. [15], Polybutylene water pipes are no longer accepted by the United States building codes and have been the subject[16] of class action lawsuits in both Canada and the U.S.[17][18] The National Plumbing Code of Canada 1995 listed polybutylene piping as acceptable for use with the exception of recirculation plumbing. By controlling the polymerization conditions, polymer chains of different lengths are manufactured giving a wide range of polybutene grades having different physical properties. Some of the characteristic properties of polybutene include high creep strength (low creep), high heat resistance, high flexibility and resistance to solvents. Molecular Formula C8H16 Formula Weight 112.21264 MOL File 9003-29-6.mol More POLYBUTENES Property Melting point: 94.3-104.8 C Boiling point: 293-341 C Density 0.908 g/mL at 25 C vapor pressure 19.7hPa at 20 refractive index n 20/D 1.504 Flash point: >230 F storage temp. Polybutene is prepared from a mixture of butene isomers, which share the same molecular formula (C4H8) but vary in the connectivity of the four carbon atoms and the location of a single carbon-carbon double bond. Polybutene (also called polybutylene) is a thermoplastic polyolefin derived from butene, a group of isomeric hydrocarbons. Markush Class. PB-1 is a high molecular weight, linear, isotactic, and semi-crystalline polymer. It is created through the condensation of succinic acid with 1,4-butanediol. PB-1 disperses easily in other polyolefins, and at low concentration, acts as processing aid reducing torque and/or increasing throughput. An ultra-hydrating hybrid gloss plumper delivers nourishment while enhancing lips for a naturally full pout. As one of the worlds leading producers of PIB, we offer the broadest range of polyisobutenes with different molecular weights. Rev. {Kp0 Also, acute dermal irritation testing indicated that polybutenes are practically nontoxic because the LDso is greater than 10, 250 mg/kg. average Mn ~2,300 by VPO, isobutylene >90 %, Polybutenes [2] Compared to PET (polyethylene terephthalate), PBT has slightly lower strength and rigidity, slightly better impact resistance, and a slightly lower glass transition temperature. Poly alpha olefins (PAO) Poly alpha olefins (PAO) are widely known as PAOs. The problem can cause both slow leaks and pipe bursting without any previous warning indication. Another reason come from the randomness in its repeating unit composition. It could be something as simple as a run The goal was to compare the biological response of the corneal stroma with three porous materials: a melt blown microfibre web of polybutylene:polypropylene (80:20); a polyester spun laced fabric (pol Biomacromolecules 6(6) , 3474-80, (2005). National Institutes of Health. Fittings with a soft compression seal can give adequate service life. Polybutene is able to enhance the adhesive properties and flexibility of glues and sealants and is often used in conjunction with resins in such applications. Belongs to the Following Reactive Group(s) . This formula features: Enhans SC-78 #355 which allows for the incorporation of a silicone into the formula without the risk of blooming and feels silky on the skin. PBT resists solvents, shrinks very little during forming, is mechanically strong, is heat-resistant up to 150 C (or 200 C with glass-fibre reinforcement), and can be treated with flame retardants to make it noncombustible. The overall market share in Europe and Asia is rather small but PB-1 piping systems have shown a steady growth in recent years. Butane: Butane is a hydrocarbon that has the chemical formula C 4 H 10. Being the name for a family of related molecules, the exact physical properties of polybutene such as density, viscosity, average molecular weight and refractive index varies from each specific polybutene product. Plasticizer for polymers, lubricants and metal-working fluids. In certain domestic markets, e.g. . livre physique chimie seconde nathan sirius corrig 2019 pdf; polybutene structural formula. PB-1 piping systems are no longer being sold in North America (see "Class action lawsuits and removal from building code approved usage", below). Stable. Polybutene undergoes thermoplastic processes such as injection molding or extrusion at temperatures above 190C. Polybutene-1 has a density of 0.92g/cm3 and a melting range of 124C-130C. for more efficient work such that your work does not impact the ability of other researchers The impeller transfers energy to the fluid as it passes through It is a member of the polyester family of polymers. On this Wikipedia the language links are at the top of the page across from the article title. Chemical Bonding. Copyright 2022 ChemicalBook. Polybutene is prepared from a mixture of butene isomers, which share the same molecular formula (C 4 H 8) but vary in the connectivity of the four carbon atoms and the location of a single carbon-carbon double bond. Do you need advice on choosing chemicals or on the product formula? Even though the poybutene I have is very viscous, it doesnt work for suspending ingredients likecoloured micas, pigments, and dyes. endstream endobj 22 0 obj <>stream This enables us to improve ads and website content. A product's hazard score is not an average of the ingredients' hazard scores. Polybutene only exists as a refined product. All rights reserved. Polybutene | C8H16 | CID 6435908 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. 1) Two different spatial arrangements of methyl groups about a double bond in 2-butene give rise to the following geometrical isomers. Sigma-Aldrich (2) Physical Form. Repeated insult patch tests of 3.150% polybutene in formulations produced, at most, minimal irritation in a small percentage of the test population. Polybutene-1 is a saturated polymer (polyolefin) of butene-1. You can find our solutions for the relevant product area by clicking on the corresponding symbol. Note: Polybutene is essentially isobutene and butene copolymer, but mainly to isobutene, it is different from Poly 1 - butene, and Polyisobutene similar. It improves the thermal stability and the viscosity of the adhesive.[10]. The relative density (d415) was 0.8~0.9. Localized stress whitening of the material generally accompanies and precedes decomposition of the polymer. PBT is similar in structure to polyethylene terephthalate (PET)the difference being in the number of methylene (CH 2) groups present in the repeating units of the polymer molecules. TER Chemicals is proud to work internationally with supply partners who stand for the highest product quality and reliability. The piping was removed from the acceptable for use list in the 2005 issue of the standard. 2-Butene is also linear with a formulation of CH3CH=CH=CH3. wg&/7~O3&Zc, _|5D+wzyLw \UEz'# r{pt"|I0>i`%$R mi./y@pi(>OsUbqvH '2e)y(2ms"#2mMfeUJX By means of anonymized data of website users we can optimize the user flow. Other applications include domestic water heaters, electrical insulation, compression packaging, wire and cable, shoe soles, and polyolefin modification (thermal bonding, enhancing softness and flexibility of rigid compounds, increasing temperature resistance and compression set of soft compounds). Polybutylene is manufactured utilising Zeigler-Natta type catalysts which produce a highly isotactic thermoplastic. [8], Polybutylene plumbing was used in several million homes built in the United States from around 1978 to 1997. Main applications are in the electrical and electronics (E&E) industry. Tracks visits of LinkedIn useres on the website. Who supplies HYDROGENATED POLYISOBUTENE ? Practically harmless to the skin; Odor Threshold: Data not available. Along the long central carbon atom chain in a polybutene molecule, these various starting butenes create repeating units with different kinds of branches (ethyl -(CH2CH3), methyl -(CH3) and dimethyl (CH3)2). Polybutylene terephthalate is used for housings in electrical engineering, but also in automotive construction as plug connectors and in households for example in showerheads or irons. Table 3 in the CIR Safety Assessment of Polyene Group as Used in Cosmeticslists Frequency (2014) and concentration of use (2013) according to duraction and type of exposure for polyene ingredients. HWrv#WAXzb*Y9f hI ;_'L\/7yKInOd&7G_o]3|-yPv{f|?RjQF"J%'w+b2/ . Polybutene (CAS No. PBT is produced by polycondensation of terephthalic acid or dimethyl terephthalate with 1,4-butanediol using special catalysts. Used by DoubleClick (Google Tag Manager) to help identify the visitors by either age, gender or interests. [20] The reaction with chlorinated water appears to be greatly accelerated by tensile stress, and is most often observed in material under highest mechanical stress such as at fittings, sharp bends, and kinks. 1,3-Butadiene is homopolymerized by radical or anionic chain polymerization to yield polybutadiene (BR) or copolymerized Nonetheless, polybutenes are typically odorless and colorless. The differences depend on viscosity, which increases directly in proportion to increasing molecular weight. Trust is the basis of every partnership. Polybutene - Risk and Safety. Unit 1 - MoleculesElaboration - Structural Formulas. [dubious discuss] Because of its crystalline structure and high molecular weight, PB-1 has good resistance to hydrostatic pressure, showing very low creep even at elevated temperatures. To restore access and understand how to better interact with our site [11] The use of PB-1 foam as thermal insulation is of great advantage for district heating pipes, since the number of materials in the sandwich structure is reduced to one, facilitating its recycling.[12]. Kuwait, the United Kingdom, Korea and Spain, PB-1 piping systems have a strong position.[8]. However, polybutenes are highly flammable and have poor weather resistance without additional stabilization. Polybutene is a rich, non-drying emollient that is a fantastic lubricant and gloss-boosting ingredient. Scientific Facts: Classification. Polymer Type. involving your site. Define structural formula. [3][8], Isotactic polybutylene crystallizes in three different forms. Mix polybutene with a liquid oil you love to create a rich, shiny, long-wearing lip oil. Cause of failure in polybutylene pipe & acetal fittings, Ullmann's Encyclopedia of Industrial Chemistry, Laminated film with improved tear strength, https://onlinelibrary.wiley.com/doi/full/10.1002/app.51816, "Assessing material performance in chlorinated potable water applications", "Chlorine resistance testing of cross-linked polyethylene piping materials", "DuPont USA Settlement of the Canadian Class Action Lawsuits", "Polybutylene (Poly-B) Pressure Water Piping", "Suspect Connections on Polybutylene Piping", https://en.wikipedia.org/w/index.php?title=Polybutylene&oldid=1135041632. Select Attribute Select Attribute Select Attribute Sort by: Default Product Number Product Description Pricing 388696 An impeller is a part of a pump or compressor that rotates at a high speed and acts as a propeller to increase a fluid's pressure and flow rate. naphtha obtained from petroleum is cracked and fractionated to obtain a mixed gas of butene and butane, which is polymerized at a temperature of -30~30 with lead chloride and Fred a gram of Ford catalyst (Friedel-Crafts catalyst). Molecular Formula: C4H8: Molar Mass: 56.10632: Density: .91g/mLat 25C(lit.) [7] It is flexible, resists impact well and has good elastic recovery. Find more information regarding cookies on our Data Protection Declaration and regarding us on the Imprint. Polybutenes Linear Formula: [-CH2C (CH3)2-]x[-CH2CH (C2H5)-]y CAS Number: 9003-29-6 Product Comparison Guide Use the product attributes below to configure the comparison table. POLYBUTENE may react vigorously with strong oxidizing agents. Polybutylene Terephthalate (PBT) is a semi-crystalline engineering thermoplastic material. %%EOF Belongs to the Following Reactive Group (s) Hydrocarbons, Aliphatic Unsaturated Potentially Incompatible Absorbents It is used to make up for the shortcomings of polyvinyl acetate hardening when cold, and the population is too soft after saliva, and the amount of polyvinyl acetate accounts. the polymer is refined and filtered after alkali washing and removing the catalyst with adsorbent. Polybutene is safe to use, because it is non-toxic. National Center for Biotechnology Information . Polybutene mixes well with Hydrogenated Polyisobutene, liquid oils, and esters. [7] Additional features include excellent wet abrasion resistance, easy melt flowability (shear thinning), and good dispersion of fillers. Isobutylene has a branched structure and a formula of CH2=C(CH3)2. Chemical Formula: (C4H8)x; Flash Point: 215 to 470F (USCG, 1999) In addition, it acts as a processing aid when added to sealants. Terms of Use - Articles of Polybutenes are included as well. Adds tack, flexibility and water repellency to adhesives and coatings. Passman describes an industrial preparation of Polybutene in which a solution of 1-butene is dried and fed into a reaction chamber. Quality Level. The Innovation Company See all products Elementis Here you have the opportunity to compile a data and sample request for interesting products, which you can then submit directly to us. This cookie is used to collect analytical information about how visitors use the website. to also use our site. This website uses cookies. Plumbing and heating systems made from PB-1 have been used in Europe and Asia for more than 30 years. [8], One example is the installation of PB-1 pipes in the Vienna Geothermal Project (1974) where aggressive geothermal water is distributed at a service temperature of 54C and 10 bar pressure. Restricted: EWG VERIFIED products cannot contain this ingredient without adequate substantiation. The EWG VERIFIED mark means a product meets EWG's strictest criteria for transparency and health. Wrap film mixed with the same amount of polyvinyl acetate and chewed for 15min, polybutene did not transfer to saliva. ~Sshj3eX+}(t9 4/wwy._;1!xIj"B^|l!o4HtA)w]M3^y?NUwH]2rJ]us5DGeQPtNY&r7MWWa7^SE^;!V:JdHy&bP>h&$}`*"6 Polybutenes are liquid, transparent and colorless polymers synthesized from C4. 1-Butene is linear with a formulation of CH2=CHCH2CH3. Extrusion foaming behavior of polybutene-1. ME 750 isn't as rich feeling as polybutene, but I have seen many lip oils that use Versagel ME 750 for richness and structure, so it's definitely possible! Polybutene is a type of polymeric molecule composed of 1-butene, 2-butene and isobutylene, which are all isomers of butene (non-cyclic C4H8), a basic hydrocarbon with four carbon atoms. In the Cosmetic Ingredient Review (CIR) safety assessment of the chemically related ingredient, Polybutene (Elder 1982), a 2-year chronic oral toxicity study of Polybutene H-IOO (75% concentrate) in Charles River albino rats was presented. The only long-term solution is to completely replace the polybutylene plumbing throughout the entire building. PB-1 can be foamed. Crystallization from solution yields form-III with the melting point of 106.5C. It is a thermoplastic polyolefin similar to polyethylene and polypropylene produced through the polymerization of butene-1 using stereospecific catalysts to create a linear, highly isotactic and semi-crystalline polymer. The rats were monitored for their body weights, mortality and reactions, tumor incidence, and hematologic, urologic, and pathologic changes. Molecular Weight 56.10632. Because of its specific properties it is mainly used in pressure piping, flexible packaging, water heaters, compounding and hot melt adhesives. PBT is a semi-crystalline and tough engineering thermoplastic. Polybutene is quite different from Hydrogenated Polyisobutenethe primary ingredient in Versagel ME 750. Feel free to get in touch with us. 0.0006 ~ 0.0009 expansion coefficient (ml / g. C). Electrical insulation At room temperature, it spontaneously converts into the form-I with the melting point of 135C and density of 0.95 g/cm3.[1]. : 9003-28-5. Gum base. Corrosionpedia is a part of Janalta Interactive. Other possible values indicate opt-out, request in progress or an error retrieving a Client ID from AMP Client ID service. Soltex polybutene exhibits good clarity, durability and cling properties, and has food-grade approval for use in food wraps. Empirical formula of the monomer and of the polymer n-butene CH3CH2CH=CH2 Isobutene H2C=C(CH3) CH2-C . Standard viscosities available are 10, 40 and 100 (mm/s at 100). There are two main fields of application: PB-1 is compatible with a wide range of tackifier resins. Saves anonymous user data from multiple website visits on multiple sites to test advertisement efficiency. The data are compared with previous data for polybutene, a stoichiometrically equivalent liquid with a smaller initial specific volume. hbbd``b`J@X$O a H #:q q Chemical Name: POLYBUTENES CBNumber: CB3413708 Molecular Formula: C8H16 Molecular Weight: 112.21264 MDL Number: MFCD00197897 MOL File: 9003-29-6.mol MSDS File: SDS Modify Date: 2022-12-21 16:56:50 Request For Quotation POLYBUTENES Properties SAFETY POLYBUTENES price More Price (4) POLYBUTENES Chemical Properties,Uses,Production Chemical Properties These numbers are not legal limits, but the range of concentrations observed in formulations containing polybutene. You may need to do some re-formulating rather than doing a straight one-for-one swap; you might consider adding some lanolin to get a bit of the tacky richness youll be missing from the polybutene. Polybutene can shrink more if it is cooled down further or subject to greater pressure. Contributes cling to LLDPE films. This website participates in the Formula Botanica, Baraka Shea Butter, TKB Trading, and Amazon affiliate programs; as an Amazon Associate, Humblebee & Me earns from qualifying purchases. We are there for you. Decorative Coatings. [13][14] The leaks were associated with degradation of polybutylene exposed to chlorinated water. PB-1, when applied as a pure or reinforced resin, can replace materials like metal, rubber and engineering polymers. PREMIUM. Polybutene functions as a binder, epilating agent and viscosity increasing agent - nonaqueous. Versagel ME 750can work if youre using polybutene to add richness to a lip oil formulation. Chemical Guys Cooper Tires EverStart Goodyear Tires Mobil 1 Rain-X. Restricted. PB-1 generally resists chemicals such as detergents, oils, fats, acids, bases, alcohol, ketones, aliphatic hydrocarbons and hot polar solutions (including water). mol1 Density: 0.908 g/mL at 25 C Boiling point: 112.2C at 760 mmHg Flash point: >230 F Safety Information Hazard Classes: WGK Germany: 1 RTECS: EM9032000 Storage temperature: -196 C Suppliers [19], There is evidence to suggest that the presence of chlorine and chloramine compounds in municipal water (often deliberately added to retard bacterial growth) will cause deterioration of the internal chemical structure of polybutylene piping and the associated acetal fittings. Viscosities of different polybutene products can vary; mine is from. Good oxidative stability and high UV resistance are two other positive properties worth mentioning. Thermal insulation house . Ethanol. Being non-polar, polybutenes stick well to other non-polar compounds and do not mix well with water, making them water repellent. [9] PB-1's most notable characteristics are weldability, temperature resistance, flexibility and high hydrostatic pressure resistance. Mobile point -37 C ~ 25. info@ncbi.nlm.nih.gov. Chemical Formula: (C4H8)x; Flash Point: 215 to 470F (USCG, 1999) Lower Explosive Limit (LEL): data unavailable. Lowering seal initiation temperature (SIT) of high speed packaging polypropylene based films. PublicSpectra. Further, recent studies have shown that PBT has superior UV properties to PET based fabrics such as T400.[6].