US4426490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyzing emulsion paper release compositions
Assignee: General Electric Co
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Filing: 1982-03-10
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Granted: 1984-01-17
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Expires: 2002-03-10
Abstract
Abstract A method of polymerizing silanol-containing organosilicon compounds is provided. Catalysts comprising dioctyl tin dineodeconate lend a unique combination of properties to curable silicone paper release coatings including long bath life, storage stability, low odor, reactivity over a wide temperature range and low release.
Inventors
- 👤 Anthony J. Dallavia, Jr.
- 👤 Gordon T. Van Vleck
- 👤 Frank J. Traver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:43
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/24; D21H19/32; C; C08; C08K; C08K5/00; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
158 words
A method of polymerizing organosilicon comounds (1) containing at least one SiOH group and any remaining silicon valences in said organosilicon compound being satisfied by radicals selected from the group consisting of silicon-bonded oxygen atoms attached to other silicon atoms to form the siloxane linkage, silicon-bonded nitrogen radicals to form the silazane linkage, silicon-bonded sulfur radicals to form the Si--S--Si linkage, Si--Si linkage, and organic groups attached to the silicon through the SiC linkage selected from the group consisting of disilylalkylene, disilylarylene, disylhydrocarbon ether linkage, monovalent hydrocarbon, monovalent halohydrocarbon, monovalent hydrocarbon ether, nitrile-substituted monovalent hydrocarbon, ester substituted monovalent hydrocarbon, and monovalent hydrocarbon group substituted with an amino amido, and sulfide groups, there being on the average from 0.9 to 3 of said organic groups attached to the silicon which comprises contacting said organosilicon compound with (2) a catalyst comprising dioctyl tin dineodeconate, at a temperature sufficient to cause an increase in the molecular weight of said organosilicon compound.
Claim 2
Independent Claim
158 words
A method of polymerizing organosilicon comounds (1) containing at least one SiOH group and any remaining silicon valences in said organosilicon compound being satisfied by radicals selected from the group consisting of silicon-bonded oxygen atoms attached to other silicon atoms to form the siloxane linkage, silicon-bonded nitrogen radicals to form the silazane linkage, silicon-bonded sulfur radicals to form the Si--S--Si linkage, Si--Si linkage, and organic groups attached to the silicon through the SiC linkage selected from the group consisting of disilylalkylene, disilylarylene, disylhydrocarbon ether linkage, monovalent hydrocarbon, monovalent halohydrocarbon, monovalent hydrocarbon ether, nitrile-substituted monovalent hydrocarbon, ester substituted monovalent hydrocarbon, and monovalent hydrocarbon group substituted with an amino amido, and sulfide groups, there being on the average from 0.9 to 3 of said organic groups attached to the silicon which comprises contacting said organosilicon compound with (2) a catalyst comprising dioctyl tin dineodeconate, at a temperature sufficient to cause an increase in the molecular weight of said organosilicon compound.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the catalyst is in the form of an emulsion.
Claim 4
Dependent Claim
13 words
The method of claim 2 wherein the catalyst is emulsified with polyvinyl alcohol.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein the catalyst emulsion additionally contains small amounts of formalin and sodium lauryl sulfate.
References Cited (Backward Citations)
US3499870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |