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US4668754A
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Silicone-polyamide block polymers, lactam terminated organosiloxane and method for making
Assignee: General Electric Co
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Filing: 1985-07-22
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Granted: 1987-05-26
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Expires: 2005-07-22
Abstract
Abstract Silicone-polyamide block polymers are provided which result from the reaction of lactam and silicone having chemically combined arylacyl or arylisocyanato groups. Silicone having terminal aryllactam groups useful for making silicon-polyamide also are provided.
Inventors
- 👤 Peter P. Policastro
- 👤 Jonathan D. Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:46
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/385; C08G69/00; C08G69/42; C08G77/388; C08G77/42; C08G77/452; C08G77/455
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
A method for making silicone-polyamide block polymers which comprises, effecting reaction between lactam and silicone having the formula ##STR11## in the presence of an effective amount of a basic catalyst, where R is a divalent C.sub.(6-14) arylene hydrocarbon radical or substituted C.sub.(6-14) divalent arylene hydrocarbon radical, Y is a member selected from acyl and isocyanato, R 1 , R 2 , R 3 and R 4 are the same or different and are members selected from C.sub.(1-18) monovalent hydrocarbon radicals and substituted C.sub.(1-18) monovalent hydrocarbon radicals and n is an integer equal to 1 to 2000 inclusive.
Claim 2
Independent Claim
97 words
A method for making silicone-polyamide block polymers which comprises, effecting reaction between lactam and silicone having the formula ##STR11## in the presence of an effective amount of a basic catalyst, where R is a divalent C.sub.(6-14) arylene hydrocarbon radical or substituted C.sub.(6-14) divalent arylene hydrocarbon radical, Y is a member selected from acyl and isocyanato, R 1 , R 2 , R 3 and R 4 are the same or different and are members selected from C.sub.(1-18) monovalent hydrocarbon radicals and substituted C.sub.(1-18) monovalent hydrocarbon radicals and n is an integer equal to 1 to 2000 inclusive.
Claim 3
Dependent Claim
12 words
A method in accordance with claim 1, where the lactam is caprolactam.
Claim 4
Dependent Claim
12 words
A method in accordance with claim 1, where the lactam is γ-butyrolactam.
Claim 5
Dependent Claim
12 words
A method in accordance with claim 1, where the lactam is laurolactam.
Claim 6
Dependent Claim
14 words
A method in accordance with claim 1, where a mixture of lactams is employed.
Claim 7
Dependent Claim
13 words
A method in accordance with claim 1, where the silicone is a polydimethylsiloxane.
Claim 8
Dependent Claim
15 words
A method in accordance with claim 1, where the basic catalyst is an alkali hydride.
References Cited (Backward Citations)
US3723566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |