US4153784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nylon copolymer from piperazine, aliphatic diamine and mixture of aliphatic diacids
Assignee: BASF SE
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Filing: 1977-06-27
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Granted: 1979-05-08
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Expires: 1997-06-27
Abstract
Abstract Nylon copolymer containing piperazine and a process for finishing leather and imitation leather, having a surface of polyurethane or plasticized PVC, by applying a solution of this nylon copolymer and drying it. The overall properties of the finish are better then those of conventional finishes.
Inventors
- 👤 Peter Horn
- 👤 Franz Leppmeier
- 👤 Guenter Eckert
- 👤 Karl Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:26
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265; C14; C14C; C14C11/00; C14C11/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31736
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
A nylon copolymer having a K value of from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 5 to 15 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 95 to 85 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 70:30 to 95:5.
Claim 2
Dependent Claim
94 words
A nylon copolymer having a K value of from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 5 to 15 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 95 to 85 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 70:30 to 95:5.
Claim 3
Dependent Claim
94 words
A nylon copolymer having a K value of from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 6 to 12 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 94 to 88 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 70:30 to 95:5.
Claim 4
Dependent Claim
94 words
A nylon copolymer having a K value of from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 6 to 12 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 94 to 88 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 70:30 to 95:5.
Claim 5
Dependent Claim
93 words
A nylon copolymer having a K value from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 5 to 15 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 95 to 85 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 80:20 to 92:8.
Claim 6
Dependent Claim
93 words
A nylon copolymer having a K value from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 5 to 15 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 95 to 85 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 80:20 to 92:8.
Claim 7
Dependent Claim
93 words
A nylon copolymer having a K value from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 6 to 12 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 94 to 88 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 80:20 to 92:8.
Claim 8
Dependent Claim
93 words
A nylon copolymer having a K value from 40 to 65 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 6 to 12 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 94 to 88 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 80:20 to 92:8.
Claim 9
Dependent Claim
94 words
A nylon copolymer having a K value of from 42 to 50 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 6 to 12 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 94 to 88 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 80:20 to 92:8.
Claim 10
Dependent Claim
94 words
A nylon copolymer having a K value of from 42 to 50 measured by the method of H. Fikentscher at 20° C. in 1% strength solution in 96% strength sulfuric acid, said copolymer being manufactured from (a) 6 to 12 percent by weight of a salt of adipic acid and an aliphatic or cycloaliphatic primary diamine containing from 5 to 20 carbon atoms and (b) 94 to 88 percent by weight of the piperazine salt of a mixture of decane-1,10-dicarboxylic acid and azelaic acid in the molar ratio respectively of from 80:20 to 92:8.
References Cited (Backward Citations)
US2130948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |