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butyl rubber

butyl rubber
butyl rubber structure
Chemical Name:
butyl rubber
PB 100;PB 400;PB 600;LM Butyl;Butylrubber;LANXESS BUTYL;LM Butyl MD 504;PB 100 (polymer);LANXESS BUTYL 402;LANXESS BUTYL 301
Molecular Formula:
Formula Weight:
MOL File:

butyl rubber Properties

Substances Added to Food (formerly EAFUS)
175.105; 175.125; 175.300; 175.320; 177.1010; 177.2600
EWG's Food Scores
EPA Substance Registry System
1,3-Butadiene, 2-methyl-, polymer with 2-methyl-1-propene (9010-85-9)
  • Risk and Safety Statements
Risk Statements  10
Safety Statements  16

butyl rubber Chemical Properties,Uses,Production


A synthetic copolymer containing from 0.5 to 2.0 molar percent of isoprene, the remainder, respectively, consisting of isobutylene. It is prepared by copolymerization of isobutylene and isoprene in methyl chloride solution, using aluminum chloride as the catalyst. After completion of polymerization, the rubber particles aretreated with hot water containing a suitable food-grade deagglomerating agent, such as stearic acid. Finally, the coagulum is dried to remove residual volatiles.

Chemical Properties

Viscosity controlling agent.

Chemical Properties

Butyl rubber has the chemical resistance characteristic of saturated hydrocarbons. Oxidative degradation is slow, and the rubber may be further protected by incorporating antioxidants. Isobutylene is the major component of bulk rubber. It provides good aging resistance and low gas permeability. Isoprene, a minor component, enhances vulcanizability.


Butyl rubber is formed from the polymerization of isobutene (isobutylene) with small amounts of chloroprene, isoprene, or butadiene and may be halogenated. The reaction is carried out in a closed system with an aluminum chloride catalyst. Butyl rubber is highly impervious to gases, which makes it the rubber best suited for inner tubes and tires, air chambers, adhesives, and dielectrics. Isobutene is an anesthetic and asphyxiant gas and can be hazardous in concentrations high enough to produce asphyxia. At these concentrations, explosion is an additional hazard.
Butyl rubber

Production Methods

The bulk of butyl rubber is made by a slurry process using aluminum chloride at 98–99°C and methyl chloride as a diluent. The extremely rapid reaction is unique, and proceeds via cationic polymerization to completion at 100°C in less than a second. Butyl rubber may be vulcanized by three basic methods: accelerated sulfur vulcanization, cross-linking with dioxime and related dinitroso compounds, and polymethylol– phenol resin cure. Halogenated butyl rubber allows broadened vulcanization latitude and rate, and enhanced covulcanization to general-purpose elastomers while it maintains the unique attributes of the basic butyl molecule.

Industrial uses

Butyl rubbers have outstanding impermeabilityto gases and excellent oxidation andozone resistance. The chemical inertness is furtherreflected in lack of molecular-weightbreakdown during processing, thus permittingthe use of hot-mixing techniques for betterpolymer/filler interaction.

butyl rubber Preparation Products And Raw materials

Raw materials

Preparation Products

butyl rubber Suppliers

Global( 23)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-66670886 China 20898 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22607 55
career henan chemical co
13203830695 0086-371-86658258
0086-371-86658258 CHINA 29864 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-88380327 CHINA 3949 58
Dayang Chem (Hangzhou) Co.,Ltd.
17705817739 +86-571-88938639
+86-571-88938652,+86-571- 88492614 CHINA 52932 58
Chemwill Asia Co.,Ltd. 86-21-51086038
86-21-51861608;;; CHINA 23975 58
Chizhou Kailong Import and Export Trade Co., Ltd. Please Email
- China 9550 50
Alfa Chemistry 516-662-5404
1-516-927-0118 United States 9956 60
Shanghai Orgchem Co.,Ltd. +86-21-5877 1921
+86-21-5877 1925 China 9687 55
Henan Huawen Chemical Co., Ltd 17550685172 0370-2070108-
QQ:2712427897 China 8898 58

View Lastest Price from butyl rubber manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-01-15 butyl rubber
US $1.00 / KG 1KG 98% 1kg ,5kg, 50kg Career Henan Chemical Co

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