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US4368090A
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Method of using copolyether ester amides as thermoplastic adhesives for heat sealing textiles
Assignee: Huels AG
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Filing: 1980-11-17
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Granted: 1983-01-11
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Expires: 2000-11-17
Abstract
Abstract Copolyether ester amides having a melting point between about 85° and 140° C. are produced from: (A) lactams or omega-aminocarboxylic acids and/or equivalent amounts of dicarboxylic acids and diamines as polyamide-forming compounds; and (B) dicarboxylic acids and polyalkylene oxide diols as polyether ester forming compounds as thermoplastic adhesives for heat sealing textiles, where the polyamide forming compounds consist of at least 30% by weight of lauryllactam and the remaining compounds together with lauryllactam result in copolyamides which have melting points which lie in the range between about 90° to 150° C.; aliphatic dicarboxylic acids are used as the dicarboxylic acids; and components A and B are used in the weight ratio from 93/7 to 35/65.
Inventors
- 👤 Salih Mumcu
- 👤 Rainer Feldmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:43
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44; Y; Y10; Y10S; Y10S525/00; Y10S525/934; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24843; Y10T428/24851; Y10T428/24893; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2746
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
In the powder dot process for heat sealing textiles comprising: applying a layer of isolated spots of 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 comprising copolyether ester amide block copolymers having melting points between about 85° and 140° C. produced from: (A) polyamide forming compounds having melting points between about 90° and 150° C. comprising not less than 30% by weight lauryllactam and other polyamide forming compounds selected from the group consisting of omega-aminocarboxylic acids, equivalent amounts of aliphatic dicarboxylic acids and diamines and mixtures thereof; and (B) polyether ester forming compounds comprising aliphatic dicarboxylic acids and polyalkylene oxide diols; wherein the weight ratio of A to B is from about 93/7 to 35/65.
Claim 2
Dependent Claim
144 words
In the powder dot process for heat sealing textiles comprising: applying a layer of isolated spots of 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 comprising copolyether ester amide block copolymers having melting points between about 85° and 140° C. produced from: (A) polyamide forming compounds having melting points between about 90° and 150° C. comprising not less than 30% by weight lauryllactam and other polyamide forming compounds selected from the group consisting of omega-aminocarboxylic acids, equivalent amounts of aliphatic dicarboxylic acids and diamines and mixtures thereof; and (B) polyether ester forming compounds comprising aliphatic dicarboxylic acids and polyalkylene oxide diols; wherein the weight ratio of A to B is from about 93/7 to 35/65.
Claim 3
Dependent Claim
20 words
The process of claim 1, wherein said adhesives are powders having a grain size between about 60 and 200 microns.
Claim 4
Dependent Claim
15 words
The process of claim 2, wherein said powders are made by the cold grinding method.
Claim 5
Dependent Claim
17 words
The process of claim 1, wherein said textile substrate and said textile upper fabric are siliconized textiles.
Claim 6
Dependent Claim
23 words
The process of claim 4, wherein said layer of adhesive has a coating weight of about 16 to 20 grams per square meter.
Claim 7
Dependent Claim
13 words
The process of claim 1, wherein said weight ratio is 90/10 to 50/50.
Claim 8
Dependent Claim
13 words
The process of claim 1, wherein said weight ratio is 85/15 to 55/45.
Claim 9
Dependent Claim
19 words
The process of claim 1, wherein said lauryllactam concentration is about 30 to 75% by weight of component A.
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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) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |