Patent · US Expired

Rubber mixtures based on uncrosslinked rubbers and crosslinked rubber particles and multifunctional isocyanates based on polyuret

US6649696B2 · kind B2 · utility

8Cited by

9References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Werner Obrecht · Moers, DE
Martin Mezger · Burscheid, DE
Anthony Sumner · Recklinghausen, DE

Key dates

Filing date	Aug 14, 2001
Grant date	Nov 18, 2003
Priority date	—
Expiry date	Aug 14, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L17/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The rubber mixtures according to the present invention consisting of uncrosslinked, double bond-containing rubbers (A), crosslinked rubber particles (B) and multifunctional isocyanates based on polyuret (C), wherein, based on 100 parts by weight (phr) of the rubber components (A) respectively, the component (B) content in the mixture is 1 to 150 parts by weight and the multifunctional isocyanate content based on polyuret (component C) is 1 to 100 parts by weight, can be used to produce rubber vulcanizates and rubber molded articles of all kinds, the vulcanizates produced therefrom exhibiting an advantageous combination of mechanical properties, such as modulus at 300% elongation, elongation at break, tear strength and abrasion resistance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.