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1. WO2020095395 - ETHYLENE-ALPHA-OLEFIN-NONCONJUGATED POLYENE COPOLYMER RUBBER AND RUBBER COMPOSITION

Publication Number WO/2020/095395
Publication Date 14.05.2020
International Application No. PCT/JP2018/041392
International Filing Date 07.11.2018
IPC
C08F 210/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
04Monomers containing three or four carbon atoms
C08F 10/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
10Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
04Monomers containing three or four carbon atoms
CPC
C08F 255/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
255Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
02on to polymers of olefins having two or three carbon atoms
06on to ethene-propene-diene terpolymers
Applicants
  • SUMITOMO CHEMICAL COMPANY, LIMITED [JP]/[JP]
Inventors
  • FUJII Yohei
  • NAKANO Sadayuki
Agents
  • HASEGAWA Yoshiki
  • SHIMIZU Yoshinori
  • MIKAMI Takafumi
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ETHYLENE-ALPHA-OLEFIN-NONCONJUGATED POLYENE COPOLYMER RUBBER AND RUBBER COMPOSITION
(FR) CAOUTCHOUC DE COPOLYMÈRE DE POLYÈNE NON CONJUGUÉ D'ÉTHYLÈNE-ALPHA-OLÉFINE ET COMPOSITION DE CAOUTCHOUC
Abstract
(EN)
Disclosed is an ethylene-α-olefin-nonconjugated polyene copolymer rubber satisfying the following requirements (A) and (B): (A) A proportion of a cyclohexane insoluble component at 25°C is from 0.3% to 50% by mass with respect to a mass of the ethylene-α-olefin-nonconjugated polyene copolymer rubber; and (B) A tanδ ratio calculated by the following equation: tanδ ratio = tanδ (100°C, 5 cpm)/tanδ (100°C, 1000 cpm) is from 3.0 to 20. The tanδ (100°C, 5 cpm) and tanδ (100°C, 1000 cpm) are a loss tangent at 100°C and a frequency of 5 cpm and a loss tangent at 100°C and a frequency of 1000 cpm, respectively.
(FR)
L'invention concerne un caoutchouc de copolymère de polyène non conjugué d'éthylène-alpha-oléfine satisfaisant les exigences (A) et (B) suivantes : (A) la proportion d'un composant insoluble dans le cyclohexane à 25 °C est comprise entre 0,3 % et 50 % en masse par rapport à la masse du caoutchouc de copolymère de polyène non conjugué d'éthylène-alpha-oléfine ; et (B) le rapport tanδ calculé par l'équation suivante : rapport tanδ = tanδ (100°C, 5 cpm)/tanδ (100°C, 1000 cpm) compris entre 3,0 et 20. Les valeurs tanδ (100 °C, 5 cpm) et tanδ (100 °C, 1000 cpm) constituent une tangente de perte à 100°C et à une fréquence de 5 cpm, et une tangente de perte à 100°C et à une fréquence de 1000 cpm, respectivement.
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