RUBBER STOCK CONTAINING HIGH TRANS POLYBUTADIENE

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRENNER, JERRY L, SANDSTROM, PAUL H, MIZNER, ERIC C
Format: Patent
Sprache:eng ; fre
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: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 1,4isomeric 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 styrenebutadiene 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.