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High molecular weight polyisobutylene (polyisobutene) Efrolen

Type	Properties
Efrolen	Appearance	Viscosity of isooctane solution at 20°C		Relative molecular mass		Ash content, max, %	Stabilizer non-staining, max, %	Volatile matter at 105°C, max, %
Efrolen	Appearance	Concentration, g/cm³	Staudinger Index (Io), cm³/g	*Number-Average molecular mass (Mn), ×10³	*Viscosity-Average molecular mass (Mv), ×10³	Ash content, max, %	Stabilizer non-staining, max, %	Volatile matter at 105°C, max, %
P-80 EF	Rubber-like	0.002	178-236	161-217	619-956	0.04	0.04	0.5
P-85 EF	Rubber-like	0.002	150-260	134-241	476-1110	0.04	0.04	0.5
P-100 EF	Rubber-like	0.002	260-325	192-305	900-1564	0.04	0.04	0.5
P-118 EF	Rubber-like	0.002	265-395	246-376	1143-2112	0.04	0.04	0.5
P-155 EF	Rubber-like	0.001	380-510	361-493	1989-3128	0.04	0.04	0.5
P-220 EF	Rubber-like	0.001	420-600	401-586	2321-4017	0.04	0.04	0.5
P-225 EF	Rubber-like	0.001	550-640	535-628	3512-4435	0.04	0.04	0.5

Description

High molecular weight polyisobutylene is an elastic rubber-like product of the catalytic polymerization of isobutylene in evaporating ethylene. Depending on the molecular weight, seven grades of polyisobutylene are produced.
The product is a saturated polymer of a carbon-chain structure, due to which it is highly resistant to oxygen, ozone, solutions of acids, alkalis and salts, and also withstands the action of oxidizing agents such as bleach, permanganate and potassium bichromate.
High molecular weight polyisobutylene does not swell and does not dissolve in ethyl alcohol, acetone and many other oxygen-containing polar solvents, and easily dissolves in aliphatic and aromatic hydrocarbons.
When heated for a long time in air to 100°C, high molecular weight polyisobutylene does not change chemically, but its plasticity increases; at 180–200°C it can be molded. High molecular weight polyisobutylene retains its elastic properties down to −55°C.

Areas of use

High molecular weight polyisobutylene is used in the construction, rubber, and other industries for the production of anti-corrosion, sealing, waterproofing coatings, mastics, pastes, and adhesives.

Packaging and transportation

High molecular weight polyisobutylene is manufactured in the form of bales weighing (25 ± 1) kg or (30 ± 1) kg. The product can be transported by any type of transport.

Warranty period

Guaranteed shelf life is three years from the date of manufacture.

Worldwide analogues

Oppanol N80, N100, N150, B200 from BASF (Germany).