Patent US3966784A successfully refreshed from Google Patents.
US3966784A
Expired / Lapsed
US
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Polyether urethane foam
Assignee: OSI Specialties Inc
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Filing: 1974-10-07
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Granted: 1976-06-29
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Expires: 1994-10-07
Abstract
Abstract A process for producing high resilience polyether urethane foam using a cyanoalkoxy-alkyl modified siloxane fluid; the foams derived therefrom; a solvent-solution of said siloxane; and cyanoalkoxyalkyl modified siloxane fluids per se.
Inventors
- 👤 Bela Prokai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:44
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/045; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0876; C07F7/0878; C07F7/0879; Y; Y10; Y10S; Y10S521/00; Y10S521/904
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
124 words
A cyanoalkyl modified siloxane fluid having the average formula (X).sub.z R.sub.3-z SiO(R.sub.2 SiO).sub.x [(X) (R)SiO].sub.y SiR.sub.3-z X.sub.z wherein x has a value of 2 to 6 inclusive; y has a value of 0 to 6 inclusive; z has a value of 0 to 1 inclusive; R is a lower alkyl or phenyl radical; and X is a cyanoalkoxy-alkyl radical having the formula --(O) n R'OR"CN where n has a value of 0 or 1, R' is an alkylene radical having from 3 to 8 carbon atoms and R" is an alkylene radical having from 2 to 4 carbon atoms said siloxane containing at least one of said cyanoalkoxy-alkyl radicals and having an aqueous molecular weight in the range of about 400 to about 2000.
Claim 2
Dependent Claim
124 words
A cyanoalkyl modified siloxane fluid having the average formula (X).sub.z R.sub.3-z SiO(R.sub.2 SiO).sub.x [(X) (R)SiO].sub.y SiR.sub.3-z X.sub.z wherein x has a value of 2 to 6 inclusive; y has a value of 0 to 6 inclusive; z has a value of 0 to 1 inclusive; R is a lower alkyl or phenyl radical; and X is a cyanoalkoxy-alkyl radical having the formula --(O) n R'OR"CN where n has a value of 0 or 1, R' is an alkylene radical having from 3 to 8 carbon atoms and R" is an alkylene radical having from 2 to 4 carbon atoms said siloxane containing at least one of said cyanoalkoxy-alkyl radicals and having an aqueous molecular weight in the range of about 400 to about 2000.
Claim 3
Dependent Claim
38 words
A siloxane fluid as defined in claim 1 having an average molecular weight of about 500 to 1000, wherein x has a value of 2 to 4 inclusive and y has a value of 1 to 4 inclusive.
Claim 4
Dependent Claim
22 words
A siloxane fluid as defined in claim 1 wherein n is 0, z is 0 and R is a lower alkyl radical.
Claim 5
Dependent Claim
14 words
A siloxane fluid as defined in claim 3 wherein R is a methyl radical.
Claim 6
Dependent Claim
22 words
A siloxane fluid as defined in claim 1 wherein n is 0, z is 1 and R is a lower alkyl radical.
Claim 7
Dependent Claim
14 words
A siloxane fluid as defined in claim 5 wherein R is a methyl radical.
Claim 8
Dependent Claim
14 words
A siloxane fluid as defined in claim 4 wherein X is a 3-(2-cyanoethoxy)propyl radical.
Claim 9
Dependent Claim
22 words
A siloxane fluid as defined in claim 2 wherein n is 0, z is 0 and R is a lower alkyl radical.
Claim 10
Dependent Claim
21 words
A siloxane fluid as defined in claim 8 wherein R is a methyl radical and X is a 3-(2-cyanoethoxy) propyl radical.
Claim 11
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU2## wherein Me is a methyl radical.
Claim 12
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU3## wherein Me is a methyl radical.
Claim 13
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU4## wherein Me is a methyl radical.
Claim 14
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU5## wherein Me is a methyl radical.
Claim 15
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU6## wherein Me is a methyl radical.
Claim 16
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU7## wherein Me is a methyl radical.
Claim 17
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU8## wherein Me is a methyl radical.
Claim 18
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU9## wherein Me is a methyl radical.
Claim 19
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU10## wherein Me is a methyl radical.
Claim 20
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU11## wherein Me is a methyl radical.
Claim 21
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU12## wherein Me is a methyl radical.
Claim 22
Dependent Claim
19 words
A siloxane fluid as defined in claim 1 having the average formula ##EQU13## wherein Me is a methyl radical.
Claim 23
Dependent Claim
19 words
A siloxane fluid as defined in claim 1, having the average formula ##EQU14## wherein Me is a methyl radical.
Claim 24
Dependent Claim
19 words
A siloxane fluid as defined in claim 1, having the average formula ##EQU15## wherein Me is a methyl 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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |