Patent US4150002A successfully refreshed from Google Patents.
US4150002A
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Polyamide melt adhesives
Assignee: Lanxess Organometallics GmbH
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Filing: 1977-11-15
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Granted: 1979-04-17
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Expires: 1997-11-15
Abstract
Abstract Polyamides and polyesteramides having melt viscosities from 25 to 600 Pa.s at 220° C. and useful as melt adhesives for textiles are disclosed, which materials are condensation products formed between (a) a dimerized fatty acid component containing at least 70 percent of dimeric acid; (b) a C 6 -C 13 aliphatic straight-chain co-dicarboxylic acid; (c) a C 6 -C 12 aliphatic straight-chain diprimary diamine; and (d) caprolactam and/or ε-amincaproic acid; the polyesteramides additionally contain a further component (e) which is caprolactone and/or ε-hydroxycaproic acid.
Inventors
- 👤 Manfred Drawert
- 👤 Eugen Griebsch
- 👤 Wolfgang Imoehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:52
CPC Classifications
C; C09; C09J; C09J177/00; C09J177/06; C09J177/08; C08; C08G; C08G69/00; C08G69/02; C08G69/36; C08G69/44
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
212 words
A polyamide having a melt viscosity from 25 to 600 Pa·s at 220° C. and adaptable to use as a melt adhesive for textiles, said polyamide being the condensation product of: (a) A dimerized fatty acid having a dimeric fatty acid content from 70 to 100 percent by weight and wherein from 0 to 50 equivalent percent of the total carboxy groups therein may derive from monocarboxylic acids present in said dimerized fatty acid or added thereto as a viscosity regulator; (b) an amount of an aliphatic straight-chain co-dicarboxylic acid having from 6 to 13 carbon atoms such that the ratio of carboxy groups in component (a) to those in component (b) is from 0.05:1 to 5:1; (c) an amount of an aliphatic straight-chain diprimary diamine having from 6 to 12 carbon atoms which is substantially equivalent to the acid components (a) and (b); and (d) from 0.5 to 1.5 moles, per mole of carboxy groups present in acid components (a) and (b), of a member selected from the group consisting of caprolactam and ε-aminocaproic acid; said polyamide being prepared by reacting component (a) with all or part of component (d) in a first step and then reacting the product of this first reaction with the remaining components in a second step.
Claim 2
Dependent Claim
212 words
A polyamide having a melt viscosity from 25 to 600 Pa·s at 220° C. and adaptable to use as a melt adhesive for textiles, said polyamide being the condensation product of: (a) A dimerized fatty acid having a dimeric fatty acid content from 70 to 100 percent by weight and wherein from 0 to 50 equivalent percent of the total carboxy groups therein may derive from monocarboxylic acids present in said dimerized fatty acid or added thereto as a viscosity regulator; (b) an amount of an aliphatic straight-chain co-dicarboxylic acid having from 6 to 13 carbon atoms such that the ratio of carboxy groups in component (a) to those in component (b) is from 0.05:1 to 5:1; (c) an amount of an aliphatic straight-chain diprimary diamine having from 6 to 12 carbon atoms which is substantially equivalent to the acid components (a) and (b); and (d) from 0.5 to 1.5 moles, per mole of carboxy groups present in acid components (a) and (b), of a member selected from the group consisting of caprolactam and ε-aminocaproic acid; said polyamide being prepared by reacting component (a) with all or part of component (d) in a first step and then reacting the product of this first reaction with the remaining components in a second step.
Claim 3
Dependent Claim
199 words
A polyesteramide having a viscosity from 25 to 600 Pa·s at 220° C. and adaptable to use as a melt adhesive for textiles, said polyesteramide being the condensation product of: (a) A dimerized fatty acid having a dimeric fatty acid content from 70 to 100 percent by weight and wherein from 0 to 50 equivalent percent of the total carboxy groups therein may derive from monocarboxylic acids present in said dimerized fatty acid or added thereto as a viscosity regulator; (b) an amount of an aliphatic straight-chain co-dicarboxylic acid having from 6 to 13 carbon atoms such that the ratio of carboxy groups in component (a) to those in component (b) is from 0.05:1 to 5:1; (c) an amount of an aliphatic straight-chain diprimary diamine having from 6 to 12 carbon atoms which is substantially equivalent to the acid components (a) and (b); (d) from 0.5 to 2.5 moles, per mole of carboxy groups present in acid components (a) and (b), of a member selected from the group consisting of caprolactam and ε-aminocaproic acid; and (e) from 0.05 to 1.0 mole, per mole of component (d), of a member selected from the group consisting of caprolactone and ε-hydroxycaproic acid.
Claim 4
Dependent Claim
199 words
A polyesteramide having a viscosity from 25 to 600 Pa·s at 220° C. and adaptable to use as a melt adhesive for textiles, said polyesteramide being the condensation product of: (a) A dimerized fatty acid having a dimeric fatty acid content from 70 to 100 percent by weight and wherein from 0 to 50 equivalent percent of the total carboxy groups therein may derive from monocarboxylic acids present in said dimerized fatty acid or added thereto as a viscosity regulator; (b) an amount of an aliphatic straight-chain co-dicarboxylic acid having from 6 to 13 carbon atoms such that the ratio of carboxy groups in component (a) to those in component (b) is from 0.05:1 to 5:1; (c) an amount of an aliphatic straight-chain diprimary diamine having from 6 to 12 carbon atoms which is substantially equivalent to the acid components (a) and (b); (d) from 0.5 to 2.5 moles, per mole of carboxy groups present in acid components (a) and (b), of a member selected from the group consisting of caprolactam and ε-aminocaproic acid; and (e) from 0.05 to 1.0 mole, per mole of component (d), of a member selected from the group consisting of caprolactone and ε-hydroxycaproic acid.
Claim 5
Dependent Claim
41 words
A polyesteramide as in claim 2 which is prepared by reacting component (a) with all or part of component (d) in a first step and then reacting the product of this first reaction with the remaining components in a second step.
Claim 6
Dependent Claim
23 words
In the method of adhering textiles with a melt adhesive, the improvement wherein said melt adhesive is a polyamide as in claim 1.
Claim 7
Dependent Claim
23 words
In the method of adhering textiles with a melt adhesive, the improvement wherein said melt adhesive is a polyesteramide as in claim 2.
Claim 8
Dependent Claim
23 words
In the method of adhering textiles with a melt adhesive, the improvement wherein said melt adhesive is a polyesteramide as in claim 3.
References Cited (Backward Citations)
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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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |