IP Library › Patent Application 12734948
Patent Application
App. No. 12/734,948

ROOM-TEMPERATURE-CURABLE POLYORGANOSILOXANE COMPOSITION

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Quick Facts
Patent No.
US None
App. No.
12/734,948
Abstract

The present invention provides a room-temperature-curable polyorganosiloxane composition which can become a silicone rubber with matte surface and is free from deterioration in physical properties. Specifically, the room-temperature-curable polyorganosiloxane composition comprises: (A) 100 parts by weight of a substantially straight-chain polyorganosiloxane having a viscosity of 20 to 1,000,000 centistokes at 25° C., and having a molecular chain terminal being sealed with a silanol group or a silicon atom-bonded hydrolyzable group; (B) 0.1 to 15 parts by weight of an organic silicon compound having 3 or more silicon atom-bonded hydrolyzable groups in a single molecule; (C) 0 to 15 parts by weight of a condensation reaction catalyst; (D) 100 to 400 parts by weight of a non-treated ground calcium carbonate or a ground calcium carbonate surface-treated with resin acid; and (E) 1 to 200 parts by weight of a non-treated precipitated calcium carbonate or a precipitated calcium carbonate surface-treated with resin acid, wherein at least one of (D) component and (E) component is required to be treated with resin acid, and wherein the amount of (D) component relative to the sum of (D) component and (E) component is within the range of 50 to 99.9% by weight.

Claims (8)

1 . A room-temperature-curable polyorganosiloxane composition comprising:

(A) 100 parts by weight of a substantially straight-chain polyorganosiloxane having a viscosity of 20 to 1,000,000 centistokes at 25° C., and having a molecular chain terminal being sealed with a silanol group or a silicon atom-bonded hydrolyzable group;

(B) 0.1 to 15 parts by weight of an organic silicon compound having 3 or more silicon atom-bonded hydrolyzable groups in a single molecule;

(C) 0 to 15 parts by weight of a condensation reaction catalyst;

(D) 100 to 400 parts by weight of a non-treated ground calcium carbonate or a ground calcium carbonate surface-treated with resin acid; and

(E) 1 to 200 parts by weight of a non-treated precipitated calcium carbonate or a precipitated calcium carbonate surface-treated with resin acid,

wherein at least one of (D) component and (E) component is required to be treated with resin acid, and

wherein the amount of (D) component relative to the sum of (D) component and (E) component is within the range of 50 to 99.9% by weight.

Assignments (3)
TERMINATION & RELEASE OF SECURITY INTEREST IN PATENTS Recorded Apr 29, 2013
From: JPMORGAN CHASE BANK, N.A.
To: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC (F/K/A MOMENTIVE PERFORMANCE MATERIALS JAPAN GK)
Reel/Frame 030311/0508 →
SECURITY AGREEMENT Recorded Apr 29, 2011
From: MOMENTIVE PERFORMANCE MATERIALS INC.; MOMENTIVE PERFORMANCE MATERIALS GMBH; MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 026204/0952 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 12, 2010
From: OBA, TOSHIO
To: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
Reel/Frame 024665/0807 →