Patent US4566931A successfully refreshed from Google Patents.
US4566931A
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Heat sealing textiles with copolyamides
Assignee: CHEMISCHE WERRKE HULS AG
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Filing: 1983-12-20
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Granted: 1986-01-28
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Expires: 2003-12-20
Abstract
Abstract Copolyamides based on dicarboxylic acids, diamines and omega amino carboxylic acids or lactams are used as thermoplastic adhesives to heat-seal especially siliconized textiles. The copolymers used consist of 20 to 80% by weight of one or more aliphatic omega amino carboxylic acids or lactams having 6 to 12 carbon atoms in the chain and 80 to 20% by weight of equimolar mixtures of one or more aliphatic dicarboxylic acids having 6 to 12 carbon atoms and aliphatic alpha-omega diamines and possibly cycloaliphatic diamines having 6 to 12 carbon atoms, at least 30% by weight of these diamines consisting of singly branched aliphatic diamines having 6 carbon atoms.
Inventors
- 👤 Hans J. Panoch
- 👤 Rainer Feldmann
- 👤 Hans Hinn
- 👤 Siegfried Brandt
- 👤 Hans-Jurgen Haage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:20
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/36; D; D06; D06M; D06M17/00; D06M17/04; D06M17/08; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2746
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
159 words
In the method for heat sealing textiles comprising applying a heat sealable adhesive to one side of a textile substrate; and securing said textile substrate to a textile upper fabric with heat and pressure applied to said heat sealable adhesive, the improvement comprising said heat sealable adhesive having a specific viscosity of about 1.3 to 1.6 and flow points of about 85° C. to 140° C. and consisting essentially of copolyamides produced from: (A) 20 to 80% by weight of compounds selected from the group consisting of aliphatic omega amino carboxylic acids having 6 to 12 carbon atoms, lactams having 6 to 12 carbon atoms, and mixtures thereof; and (B) 80 to 20% by weight of equimolar amounts of: (a) aliphatic dicarboxylic acids having 6 to 12 carbon atoms; with (b) aliphatic alpha-omega diamines having 6 to 12 carbon atoms wherein at least 30% by weight of said diamines consist of singly branched aliphatic diamines having 6 carbon atoms.
Claim 2
Dependent Claim
159 words
In the method for heat sealing textiles comprising applying a heat sealable adhesive to one side of a textile substrate; and securing said textile substrate to a textile upper fabric with heat and pressure applied to said heat sealable adhesive, the improvement comprising said heat sealable adhesive having a specific viscosity of about 1.3 to 1.6 and flow points of about 85° C. to 140° C. and consisting essentially of copolyamides produced from: (A) 20 to 80% by weight of compounds selected from the group consisting of aliphatic omega amino carboxylic acids having 6 to 12 carbon atoms, lactams having 6 to 12 carbon atoms, and mixtures thereof; and (B) 80 to 20% by weight of equimolar amounts of: (a) aliphatic dicarboxylic acids having 6 to 12 carbon atoms; with (b) aliphatic alpha-omega diamines having 6 to 12 carbon atoms wherein at least 30% by weight of said diamines consist of singly branched aliphatic diamines having 6 carbon atoms.
Claim 3
Dependent Claim
17 words
The method of claim 1, wherein said textile substrate and said textile upper fabric are siliconized textiles.
Claim 4
Dependent Claim
29 words
The method of claim 1, further comprising the addition of not more than about 20% by weight of cycloaliphatic diamines having 6 to 12 carbon atoms as said diamines.
Claim 5
Dependent Claim
13 words
The method of claim 3, wherein said singly branched diamines include 2-methylpentamethylene diamine.
Claim 6
Dependent Claim
28 words
The method of claim 3, wherein said singly branched diamines include an isomeric mixture of 2-methylpentamethylene diamine and not more than about 20% by weight of 2-ethyltetramethylene diamine.
Claim 7
Dependent Claim
20 words
The method of claim 1, wherein said singly branched aliphatic diamines are at least 50% by weight of said diamines.
Claim 8
Dependent Claim
18 words
The method of claim 1, wherein component (A) contains a plurality of said aliphatic omega amino carboxylic acids.
Claim 9
Dependent Claim
14 words
The method of claim 1, wherein component (A) contains a plurality of said lactams.
Claim 10
Dependent Claim
19 words
The method of claim 1, wherein said heat sealable adhesive has an extractable content of about 0.5 to 5%.
Claim 11
Dependent Claim
116 words
Thermoplastic adhesives having a specific viscosity of about 1.3 to 1.6 and flow points of about 85° C. to 140° C. for heat sealing textiles consisting essentially of copolyamides produced from: (A) 20 to 80% by weight of compounds selected from the group consisting of aliphatic omega-amino carboxylic acids having 6 to 12 carbon atoms, lactams having 6 to 12 carbon atoms, and mixtures thereof; and (B) 80 to 20% by weight of equimolar amounts of: (a) aliphatic dicarboxylic acids having 6 to 12 carbon atoms; with (b) aliphatic alpha-omega diamines having 6 to 12 carbon atoms wherein at least 30% by weight of said diamines consist of singly branched aliphatic diamines having 6 carbon atoms.
Claim 12
Dependent Claim
116 words
Thermoplastic adhesives having a specific viscosity of about 1.3 to 1.6 and flow points of about 85° C. to 140° C. for heat sealing textiles consisting essentially of copolyamides produced from: (A) 20 to 80% by weight of compounds selected from the group consisting of aliphatic omega-amino carboxylic acids having 6 to 12 carbon atoms, lactams having 6 to 12 carbon atoms, and mixtures thereof; and (B) 80 to 20% by weight of equimolar amounts of: (a) aliphatic dicarboxylic acids having 6 to 12 carbon atoms; with (b) aliphatic alpha-omega diamines having 6 to 12 carbon atoms wherein at least 30% by weight of said diamines consist of singly branched aliphatic diamines having 6 carbon atoms.
Claim 13
Dependent Claim
29 words
The thermoplastic adhesives of claim 10, further comprising the addition of not more than 20% by weight of cycloaliphatic diamines having 6 to 12 carbon atoms as said diamines.
Claim 14
Dependent Claim
14 words
The thermoplastic adhesives of claim 11, wherein said singly branched diamines include 2-methylpentamethylene diamine.
Claim 15
Dependent Claim
29 words
The thermoplastic adhesives of claim 11, wherein said singly branched diamines include an isomeric mixture of 2-methylpentamethylene diamine and not more than about 20% by weight of 2-ethyltetramethylene diamine.
Claim 16
Dependent Claim
21 words
The thermoplastic adhesives of claim 10, wherein said singly branched aliphatic diamines are at least 50% by weight of said diamines.
Claim 17
Dependent Claim
19 words
The thermoplastic adhesives of claim 10, wherein component (A) contains a plurality of said aliphatic omega amino carboxylic acids.
Claim 18
Dependent Claim
15 words
The thermoplastic adhesives of claim 10, wherein component (A) contains a plurality of said lactams.
Claim 19
Dependent Claim
15 words
The thermoplastic adhesives of claim 1, having an extractable content of about 0.5 to 5%.
Claim 20
Dependent Claim
97 words
Thermoplastic adhesives having a specific viscosity of about 1.3 to 1.6 and flow points of about 85° C. to 140° C. for heat sealing textiles consisting essentially of copolyamides produced from: (A) 20 to 80% by weight of compounds selected from the group consisting of aliphatic omega amino carboxylic acids having 6 to 12 carbon atoms, lactams having 6 to 12 carbon atoms, and mixtures thereof; and (B) 80 to 20% by weight of equimolar amounts of: (a) aliphatic dicarboxylic acids having 6 to 12 carbon atoms; with (b) singly branched aliphatic diamines having 6 carbon atoms.
Claim 21
Dependent Claim
97 words
Thermoplastic adhesives having a specific viscosity of about 1.3 to 1.6 and flow points of about 85° C. to 140° C. for heat sealing textiles consisting essentially of copolyamides produced from: (A) 20 to 80% by weight of compounds selected from the group consisting of aliphatic omega amino carboxylic acids having 6 to 12 carbon atoms, lactams having 6 to 12 carbon atoms, and mixtures thereof; and (B) 80 to 20% by weight of equimolar amounts of: (a) aliphatic dicarboxylic acids having 6 to 12 carbon atoms; with (b) singly branched aliphatic diamines having 6 carbon atoms.
Claim 22
Dependent Claim
15 words
The thermoplastic adhesives of claim 18, wherein said singly branched aliphatic diamine is 2-methylpentamethylene diamine.
Claim 23
Dependent Claim
29 words
The thermoplastic adhesives of claim 18, wherein said singly branched diamines include an isomeric mixture of 2-methylpentamethylene diamine and not more than about 20% by weight of 2-ethyltetramethylene diamine.
Claim 24
Dependent Claim
19 words
The thermoplastic adhesives of claim 18, wherein component (A) contains a plurality of said aliphatic omega amino carboxylic acids.
Claim 25
Dependent Claim
15 words
The thermoplastic adhesives of claim 18, wherein component (A) contains a plurality of said lactams.
Claim 26
Dependent Claim
15 words
The thermoplastic adhesives of claim 18, having an extractable content of about 0.5 to 5%.
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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) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |