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Low molecular weight polyisobutylene (polyisobutene)

Type	Properties
Efrolen	Appearance	Staudinger Index (Io), cm³/g	Viscosity-Average molecular mass, calculated by formula: ^0.65√((Io · 100)/3.06)	Ash content, max, %	Stabilizer non-staining, max, %	Volatile matter at 105°C, max, %
P-10 EF	Viscous mass Colour is ranging from pale-brown to dark brown	25-34	30,000 - 48,500	0.04	0.04	0.3
P-12 EF		34-46	48,500 - 77,200	0.04	0.04	0.3
P-15 EF		46-56	77,200 - 104,500	0.04	0.04	0.3
P-20 EF		56-76	104,500 - 167,190	0.04	0.04	0.3
P-30 EF		76-113	167,190 - 307,780	0.04	0.04	0.3
P-50 EF		113-143	307,780 - 442,140	0.04	0.04	0.3

Description

Low molecular weight polyisobutylene are produced by the methods of polymerization of isobutylene or thermomechanical destruction of high molecular weight polyisobutylene.
Low molecular weight polyisobutylene is a rubber-like product with cold flow properties. Polyisobutylene is a viscous-transparent mass from colorless to dark brown, odorless and tasteless. Insoluble in water, alcohols, esters and ketones.
It dissolves in fats and oils through swelling. Density - 0.88–0.92 g/cm³. Glass transition temperature - minus 68°C. Flash point: 158°C. Low molecular weight polyisobutylene retains its elastic properties down to −75°C.
Polyisobutylene is a saturated polymer, highly resistant to oxygen, ozone, solutions of acids, alkalis and salts, and withstands the action of strong oxidizing agents.

Areas of use

It is used in the oil, electrical, and chemical industries for the production of adhesives, oils, pastes, sealants, sealing material, softeners and other materials.

Packaging and transportation

Low molecular weight polyisobutylene is packaged in corrugated cardboard boxes with an internal anti-adhesive layer with a net weight of 20 kg or in consumer containers. The product is transported by any type of transport.

Warranty period

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

Worldwide analogues

Oppanol B10, B11, B12, B13, B14, B15, B30, N50 from BASF. SDG of Zhejiang Shunda New Material Co., ltd. HRD of Shandong Hongrui New Material Technology Co., Ltd.