Compoundierungsmittel für Dienkautschuke und Kautschukzusammensetzung

Details

Veröffentlichungs-Nr.

EP4748881

Anmeldetag

19. Februar 2025

Veröffentlichung

28. August 2025

Rechtsraum

EP

Abstract

(A) A compounding agent for diene rubbers containing a silicone resin represented by formula (1) can, when added to a rubber composition, provide a rubber composition that can achieve desired hardness, tensile properties and durability without deteriorating processability, abrasion resistance and low fuel consumption performance of the composition. Formula (1): (SiO<4/2>)<a>(R<1>SiO<3/2>)<b>(R<1>2 SiO<2/2>)<c>(R<1>3 SiO<1/2>)<d>(R<2>O<1/2>)<e> , wherein in the formula, each R<1> independently represents a C1-8 alkyl, aralkyl or aryl group which may be substituted with a hydrogen atom or a halogen atom; at least 50 mol% of R<1> is a methyl group; R<2> represents a hydrogen atom, a methyl group, an ethyl group, a n-propyl group, an i-propyl group or an acetyl group; at least 20 mol% of R<2> is a hydrogen atom; a, b, c and d are numbers satisfying 0 ≤ a < 1, 0 < b ≤ 1, 0 ≤ c < 1, 0 ≤ d < 1 and a+b+c+d = 1; and e is a number satisfying 0 ≤ e ≤ 2.

Anmelder

Firma

SHIN-ETSU CHEMICAL CO., LTD.

Land

🇯🇵 Japan