US4003847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent solutions of siloxane fluids
Assignee: OSI Specialties Inc
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Filing: 1975-06-19
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Granted: 1977-01-18
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Expires: 1995-06-19
Abstract
Abstract A solvent-solution of a cyanoalkyl modified siloxane fluid.
Inventors
- 👤 Bela Prokai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:30
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C08G; C08G77/00; C08G77/04; C08G77/045; C08J2375/00; C08J2375/04; C08J2375/08; C08J2483/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
183 words
A composition suitable for use in the production of high resilience polyether urethane foam consisting essentially of an organic solvent solution of a cyanoalkyl modified siloxane fluid having the average formula (X) z R 3-z SiO(R 2 SiO) x [(X)(R)SiO] y SiR 3-z X z wherein x has a value of 1 of 6 inclusive; y has a value of 0 to 6 inclusieve; z has a value of 0 to 1 inclusive; R is a lower alkyl or phenyl radical; and X is a cyanoalkyl radical of the formula -(0) n R'CN where n has a value of 0 to 1 and R' is an alkylene radical having from 2 to 4 carbon atoms; said siloxane fluid containing at least one of said cyanoalkyl radicals and having an average molecular weight in the range of about 400 to about 1500, said solution containing at least 5 parts by weight of said siloxane fluid per 95 parts by weight of said solvent, and wherein the organic solvent is an organic polyether selected from the group consisting of mono-ol, diol and triol hydroxy compounds.
Claim 2
Dependent Claim
183 words
A composition suitable for use in the production of high resilience polyether urethane foam consisting essentially of an organic solvent solution of a cyanoalkyl modified siloxane fluid having the average formula (X) z R 3-z SiO(R 2 SiO) x [(X)(R)SiO] y SiR 3-z X z wherein x has a value of 1 of 6 inclusive; y has a value of 0 to 6 inclusieve; z has a value of 0 to 1 inclusive; R is a lower alkyl or phenyl radical; and X is a cyanoalkyl radical of the formula -(0) n R'CN where n has a value of 0 to 1 and R' is an alkylene radical having from 2 to 4 carbon atoms; said siloxane fluid containing at least one of said cyanoalkyl radicals and having an average molecular weight in the range of about 400 to about 1500, said solution containing at least 5 parts by weight of said siloxane fluid per 95 parts by weight of said solvent, and wherein the organic solvent is an organic polyether selected from the group consisting of mono-ol, diol and triol hydroxy compounds.
Claim 3
Dependent Claim
15 words
A compositions as defined in claim 1 wherein the organic solvent is a polyether triol.
Claim 4
Dependent Claim
20 words
A composition as defined in claim 1 wherein a catalyst is present in the solvent solution as an additional ingredient.
Claim 5
Dependent Claim
44 words
A composition as defined in claim 1 wherein y has a value of 1 to 4 inclusive, n is 0, z is 0 and R is a lower alkyl radical and the siloxane fluid has an average molecular weight of about 400 to 900.
Claim 6
Dependent Claim
13 words
A composition as defined in claim 4 wherein R is a methyl radical.
Claim 7
Dependent Claim
13 words
A composition as defined in claim 5 wherein X is a gamma-cyanopropyl radical.
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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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |