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US5034455A
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Curable silicone caulk compositions
Assignee: General Electric Co
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Filing: 1989-10-03
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Granted: 1991-07-23
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Expires: 2009-10-03
Abstract
Abstract Curable silicone caulk compositions are provided using a nonionically stabilized silanol-terminated polydiorganosiloxane, water, a silane cross-linker, a tin condensation catalyst, and calcium carbonate.
Inventors
- 👤 Judith Stein
- 👤 Tracey M. Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K13/00; C08K13/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A silicone latex composition consisting essentially of by weight, (A) 100 parts of a base formulation consisting essentially of an aqueous emulsion having 40 to 60% by weight solids and a pH in the range of about 4 to 6, of a silanol-terminated polydiorganosiloxane and an effective amount of a nonionic surfactant, (B) 0.1 to 5 parts of a silane cross-linker, (C) 25 to 70 parts of calcium carbonate, and (D) 0.3 to 2 parts of a stannoxane catalyst having the formula, (R).sub.2 SnX-O-Sn(R.sup.1).sub.2 OH. where R and R 1 are selected from the same or different C.sub.(1-8) alkyl radicals, and X is a halogen radical, or an acyloxy radical.
Claim 2
Dependent Claim
110 words
A silicone latex composition consisting essentially of by weight, (A) 100 parts of a base formulation consisting essentially of an aqueous emulsion having 40 to 60% by weight solids and a pH in the range of about 4 to 6, of a silanol-terminated polydiorganosiloxane and an effective amount of a nonionic surfactant, (B) 0.1 to 5 parts of a silane cross-linker, (C) 25 to 70 parts of calcium carbonate, and (D) 0.3 to 2 parts of a stannoxane catalyst having the formula, (R).sub.2 SnX-O-Sn(R.sup.1).sub.2 OH. where R and R 1 are selected from the same or different C.sub.(1-8) alkyl radicals, and X is a halogen radical, or an acyloxy radical.
Claim 3
Dependent Claim
15 words
A caulk composition in accordance with claim 1, wherein the polydiorganosiloxane is a silanol-terminated polydimethylsiloxane.
Claim 4
Dependent Claim
13 words
A caulk composition in accordance with claim 1, wherein the stannoxane is ##STR4##
Claim 5
Dependent Claim
14 words
A caulk composition in accordance with claim 1, where the silane cross-linker is methyltrimethoxysilane.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |