Curable composition containing an oxypropylene polymer and calci

Details Curable composition containing an oxypropylene polymer and calci Curable composition containing an oxypropylene polymer and calci

1996-05-21

1997-12-30

Dean, Karen A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524297, 524425, 524588, 524788, 524860, 524863, 4274071, C08K 900

Patent

active

057031460

ABSTRACT:
A curable composition includes (A) 100 parts by weight of an oxypropylene polymer having groups containing silicon atoms bonded to a hydroxy group and/or a hydrolyzable group and capable of crosslinking by forming a siloxane bond, a maximum Mw/Mn of 1.6, and an average molecular weight of at least 6,000, (B) from 100 to 200 parts by weight of calcium carbonate containing at least 30% by weight calcium carbonate of an average particle size of not larger than 0.5 .mu.m and surface-treated with a fatty acid, (C) from 30 to 100 parts by weight of a plasticizer containing at least 5% by weight phthalic acid ester plasticizer, (D) from 0.5 to 10 parts by weight of a compound represented by the formula R.sup.1 Si(OCH.sub.3).sub.3 and/or Si(OCH.sub.2 CH.sub.3).sub.4 (wherein R.sup.1 represents a monovalent organic group containing no amino groups), (E) from 0.5 to 10 parts by weight of a compound represented by following formula (1), and (F) from 0.5 to 5 parts by weight of an organotin curing catalyst, the total amount of components (D) and (E) being at least 2 parts by weight, and component (A) occupying from 15 to 35% by weight;

REFERENCES:
patent: 4618653 (1986-10-01), Kawakubo et al.
patent: 4983700 (1991-01-01), Yukimoto et al.
patent: 5013807 (1991-05-01), Shimizu et al.
Patent Abstracts of Japan, vol. 8, No. 260, Nov. 29, 1984, JP-A-59-138259.

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