Patent US3919147A successfully refreshed from Google Patents.
US3919147A
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Abietate modified polysulfide polymers and other resins as adhesive additives for liquid polysulfide polymer based adhesive compositions
Assignee: ATK Launch Systems LLC
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Filing: 1973-07-06
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Granted: 1975-11-11
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Expires: 1993-07-06
Abstract
Abstract Polysulfide and polyester polymers modified with abietic acid are effective as adhesive additives for liquid polysulfide polymer based compositions used as sealants or bonding agents on various substrates such as glass or aluminum.
Inventors
- 👤 Jose L Villa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:06
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/04; C08G; C08G75/00; C08G75/14; C09; C09J; C09J181/00; C09J181/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
A CURABLE, LIQUID, ABIETATE-MODIFIED POLYSULFIDE POLYMER BASED SEALEANT COMPOSITON CONTACINING AS AN ADHESIVE ADDITIVE, ABOUT 0.5 TO 5.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF POLYSULFIDE POLYMER PREPARED BY REACTING A LIQUID POLYESTER POLYMER HAVING A MOLECULAR WEIGHT OF FROM 500 TO 4,000 AND ABIETIC ACID IN A SOLVET AT A TEMPERATUREOF 130*C. TO 200*C. UNDER AN INERT ATMOSPHRE.
Claim 2
Dependent Claim
61 words
A CURABLE, LIQUID, ABIETATE-MODIFIED POLYSULFIDE POLYMER BASED SEALEANT COMPOSITON CONTACINING AS AN ADHESIVE ADDITIVE, ABOUT 0.5 TO 5.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF POLYSULFIDE POLYMER PREPARED BY REACTING A LIQUID POLYESTER POLYMER HAVING A MOLECULAR WEIGHT OF FROM 500 TO 4,000 AND ABIETIC ACID IN A SOLVET AT A TEMPERATUREOF 130*C. TO 200*C. UNDER AN INERT ATMOSPHRE.
Claim 3
Dependent Claim
77 words
A curable, abietate modified sealant composition comprising in weight ratio, a. 100 parts by weight of liquid polysulfide polymer, b. about 2.0 to 10.0 parts by weight of liquid polysulfide polymer curing agent, and c. about 0.5 to 5.0 parts by weight of the reaction product of a liquid polyester polymer having a molecular weight of from 500 to 2500 and abietic acid in a solvent at a temperature of 150*C. to 200*C. under an inert atmosphere.
Claim 4
Dependent Claim
77 words
A curable, abietate modified sealant composition comprising in weight ratio, a. 100 parts by weight of liquid polysulfide polymer, b. about 2.0 to 10.0 parts by weight of liquid polysulfide polymer curing agent, and c. about 0.5 to 5.0 parts by weight of the reaction product of a liquid polyester polymer having a molecular weight of from 500 to 2500 and abietic acid in a solvent at a temperature of 150*C. to 200*C. under an inert atmosphere.
References Cited (Backward Citations)
US3240735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |