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US3883487A
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Copolyamides containing caprolactam, lauriclactam and 11-aminoundecanoic acid
Assignee: Plate Bonn GmbH
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Filing: 1973-07-31
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Granted: 1975-05-13
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Expires: 1993-07-31
Abstract
Abstract The invention relates to copolyamides containing caprolactam, lauriclactam and 11-amino-undecanoic acid, useful as heat sealing agents.
Inventors
- 👤 Fritz Raabe
- 👤 Jong Eduard De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:27
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/36; Y; Y10; Y10S; Y10S524/00; Y10S524/904
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
29 words
A SOLID COPOLYAMIDE CONSISTING ESENTIALLY OF RECURRING UNITS OF CAPROLACTAM, LAURICLACTAM, 11 -AMINOUNDECANOIC ACID AND A HEXAMETHYLENE DIAMINE SALT OF AN ALIPHATIC DICARBOXYLIC ACID CORRESPONDING TO THE FORMULA HOOC-(CH2)N-COOH
Claim 2
Dependent Claim
29 words
A SOLID COPOLYAMIDE CONSISTING ESENTIALLY OF RECURRING UNITS OF CAPROLACTAM, LAURICLACTAM, 11 -AMINOUNDECANOIC ACID AND A HEXAMETHYLENE DIAMINE SALT OF AN ALIPHATIC DICARBOXYLIC ACID CORRESPONDING TO THE FORMULA HOOC-(CH2)N-COOH
Claim 3
Dependent Claim
18 words
The copolyamide according to claim 1, wherein said units are incorporated in the copolyamide in the following proportions:
Claim 4
Dependent Claim
18 words
The copolyamide according to claim 1, wherein said units are incorporated in the copolyamide in the following proportions:
Claim 5
Dependent Claim
17 words
The copolymide according to claim 1 wherein n in formula (I) is 4, 7, 8, or 10.
Claim 6
Dependent Claim
15 words
The copolyamide according to claim 4 wherein n in formula (I) is 7 or 8.
Claim 7
Dependent Claim
56 words
A process for producing powdery copolyamides consisting essentially of recurring units of caprolactam, lauriclactam 11-aminoundecanoic acid, and a hexamethylene diamine salt of an aliphatic dicarboxylic acid corresponding to the formula HOOC-(CH2)n-COOH (I) in which n is 4, 7, 8, 10 or 11, comprising polymerizing said units under pressure at elevated temperature in the following quantitative proportions:
Claim 8
Dependent Claim
56 words
A process for producing powdery copolyamides consisting essentially of recurring units of caprolactam, lauriclactam 11-aminoundecanoic acid, and a hexamethylene diamine salt of an aliphatic dicarboxylic acid corresponding to the formula HOOC-(CH2)n-COOH (I) in which n is 4, 7, 8, 10 or 11, comprising polymerizing said units under pressure at elevated temperature in the following quantitative proportions:
Claim 9
Dependent Claim
16 words
The process according to claim 6, wherein said units are polymerized in the following quantitative proportions:
Claim 10
Dependent Claim
16 words
The process according to claim 6, wherein said units are polymerized in the following quantitative proportions:
Claim 11
Dependent Claim
17 words
The process according to claim 6, wherein n in formula (I) is 4, 7, 8 or 10.
Claim 12
Dependent Claim
15 words
The process according to claim 9 wherein n in formula (I) is 7 or 8.
Claim 13
Dependent Claim
29 words
The process according to claim 6, wherein polymerization is carried out at a temperature of about 280* to 300*C under a pressure of from about 10 to 50 atms.
Claim 14
Dependent Claim
21 words
The process according to claim 6, wherein after-condensation is carried out for 1 to 3 hours at about 250* to 300*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |