RUBBER STOCK CONTAINING HIGH TRANS POLYBUTADIENE

RUBBER STOCK CONTAINING HIGH TRANS POLYBUTADIENE

The present invention relates to a rubber stock comprising (A) based on 100 parts by weight of rubber (1) from about 5 to about 25 weight percent of a trans 1,4-polybutadiene rubber wherein at least 65 percent of its butadiene repeat units are a trans 1,4-isomeric structure; and (2) from about 50 to...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRENNER, JERRY L, SANDSTROM, PAUL H, MIZNER, ERIC C
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:The present invention relates to a rubber stock comprising (A) based on 100 parts by weight of rubber (1) from about 5 to about 25 weight percent of a trans 1,4-polybutadiene rubber wherein at least 65 percent of its butadiene repeat units are a trans 1,4-isomeric structure; and (2) from about 50 to about 95 weight percent of cis 1,4-polyisoprene, and (3) from about 0 to about 30 weight percent of the rubber selected from the group consisting of styrene-butadiene rubber, medium vinyl polybutadiene rubber wherein from about 40 to about 60 percent of its butadiene repeat units are a 1,2-vinyl isomeric structure and a cis 1,4-polybutadiene rubber wherein at least 90 percent of its butadiene repeat units are a cis 1,4-isomeric structure; (B) from about 0.1 to about 10 phr of a methylene acceptor; and (C) from about 0.1 to about 10 phr of a methylene donor.