Room temperature curable organopolysiloxane composition
First Claim
1. A room temperature curable organopolysiloxane composition comprising;
- (A) 100 parts by weight of a diorganopolysiloxane represented by the general formula (1);
space="preserve" listing-type="equation">HO Si(R.sup.1).sub.2 O!.sub.m H (1)wherein R1 represents a substituted or unsubstituted monovalent hydrocarbon group, and n is an integer of 15 or more;
(B) from 0.1 part by weight to 20 parts by weight of an organosilane, or a partially hydrolyzed product thereof, represented by the general formula (2);
space="preserve" listing-type="equation">(R.sup.2).sub.m Si(OR.sup.2).sub.4-m (
2)wherein R2 '"'"'s each independently represent a substituted or unsubstituted monovalent hydrocarbon group, and m is 0, 1 or 2;
(C) from 0.01 part by weight to 10 parts by weight of a curing catalyst;
(D) from 20 parts by weight to 600 parts by weight of a magnesium silicate; and
(E) from 5 parts by weight to 80 parts by weight of a paraffin type aliphatic hydrocarbon which is liquid or semi-solid at room temperature.
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Accused Products
Abstract
A room temperature curable organopolysiloxane composition including: (A) 100 parts by weight of a diorganopolysiloxane represented by the general formula (1):
HO Si(R.sup.1).sub.2 O!.sub.n H (1)
wherein R1 represents a substituted or unsubstituted monovalent hydrocarbon group, and n is an integer of 15 or more;
(B) from 0.1 part by weight to 20 parts by weight of an organosilane, or a partially hydrolyzed product thereof, represented by the general formula (2):
(R.sup.2).sub.m S(OR.sup.2).sub.4-m (2)
wherein R2 '"'"'s each independently represent a substituted or unsubstituted monovalent hydrocarbon group, and m is 0, 1 or 2;
(C) from 0.01 part by weight to 10 parts by weight of a curing catalyst;
(D) from 20 parts by weight to 600 parts by weight of a magnesium silicate; and
(E) from 5 parts by weight to 80 parts by weight of a paraffin type aliphatic hydrocarbon which is liquid or semi-solid at room temperature. This composition can be rapidly cured, even after a long-term storage.
16 Citations
18 Claims
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1. A room temperature curable organopolysiloxane composition comprising;
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(A) 100 parts by weight of a diorganopolysiloxane represented by the general formula (1);
space="preserve" listing-type="equation">HO Si(R.sup.1).sub.2 O!.sub.m H (1)wherein R1 represents a substituted or unsubstituted monovalent hydrocarbon group, and n is an integer of 15 or more; (B) from 0.1 part by weight to 20 parts by weight of an organosilane, or a partially hydrolyzed product thereof, represented by the general formula (2);
space="preserve" listing-type="equation">(R.sup.2).sub.m Si(OR.sup.2).sub.4-m (
2)wherein R2 '"'"'s each independently represent a substituted or unsubstituted monovalent hydrocarbon group, and m is 0, 1 or 2; (C) from 0.01 part by weight to 10 parts by weight of a curing catalyst; (D) from 20 parts by weight to 600 parts by weight of a magnesium silicate; and (E) from 5 parts by weight to 80 parts by weight of a paraffin type aliphatic hydrocarbon which is liquid or semi-solid at room temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification