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Method of adhering textiles with a polyamide melt adhesive

Assignee: Lanxess Organometallics GmbH
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Filing: 1976-07-27
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Granted: 1977-08-30
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Expires: 1996-07-27
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Abstract

Abstract A polyamide melt adhesive having a melt viscosity, measured at 220° C., of 25-600 Pas and adaptable for the adhesion of textiles, said polyamide comprising A. 1. dimerized fatty acid having a content of 70-100 percent by weight of dimeric fatty acid, and optionally comprising 2. a monocarboxylic acid as a molecular-weight regulator (chain stopper), whereby up to 50 equivalent percent of the total carboxy groups of the mixture (a) (1) and (2) can be derived from the monocarboxylic acid; and comprising B. one or more aliphatic straight chain co-dicarboxylic acids having 6-13 carbon atoms, wherein the ratio of carboxylic acids according to (a) (1) and (2) to carboxylic acid according to (b) is from 0.05:1 to 5:1, calculated on the carboxy groups; and further comprising in an amount approximately equivalent to the acids mentioned under (a) and (b) above C. an aliphatic straight chain diprimary diamine having 6-12 carbon atoms, and D. caprolactam and/or ε-aminocaproic acid, wherein from 0.5 to 1.5 mols of caprolactam and/or ε-aminocaproic acid are employed per mol of carboxy groups of the acids mentioned under (a) and (b) above.

Inventors

  • 👤 Manfred Drawert
  • 👤 Eugen Griebsch
  • 👤 Wolfgang Imoehl

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:08
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 75 words
In the method of adhering textiles with a melt adhesive, the improvement wherein said melt adhesive is a polyamide melt adhesive having a melt viscosity, measured at 200° C, of 25-600 Pas and which is the reaction product of approximately equivalent amounts of an acid component and a basic component, said acid component comprising a. 1. a dimerized fatty acid having a content of 70-100 percent by weight of dimeric fatty acid and, optionally, 2.
Claim 2
Dependent Claim 75 words
In the method of adhering textiles with a melt adhesive, the improvement wherein said melt adhesive is a polyamide melt adhesive having a melt viscosity, measured at 200° C, of 25-600 Pas and which is the reaction product of approximately equivalent amounts of an acid component and a basic component, said acid component comprising a. 1. a dimerized fatty acid having a content of 70-100 percent by weight of dimeric fatty acid and, optionally, 2.
Claim 3
Dependent Claim 122 words
a monocarboxylic acid, as a molecular weight regulator, whereby up to 50 equivalent percent of the total carboxy groups of the mixture (a) (1) and (2) can be derived from the monocarboxylic acid, and b. one or more aliphatic straight chain co-dicarboxylic acids having 6-13 carbon atoms, wherein the ratio of carboxylic acids according to (a) (1) and (2) to carboxylic acid according to (b) is from 0.05:1 to 5:1, calculated on the carboxy groups, said basic component comprising c an aliphatic straight chain diprimary diamine having 6-12 carbon atoms and d. caprolactam, ε-aminocaproic acid, or mixtures thereof such that from 0.5 to 1.5 mols of caprolactam, ε-aminocaproic acid, or mixtures thereof are reacted per mol of carboxyl groups in said acid
Claim 4
Dependent Claim 122 words
a monocarboxylic acid, as a molecular weight regulator, whereby up to 50 equivalent percent of the total carboxy groups of the mixture (a) (1) and (2) can be derived from the monocarboxylic acid, and b. one or more aliphatic straight chain co-dicarboxylic acids having 6-13 carbon atoms, wherein the ratio of carboxylic acids according to (a) (1) and (2) to carboxylic acid according to (b) is from 0.05:1 to 5:1, calculated on the carboxy groups, said basic component comprising c an aliphatic straight chain diprimary diamine having 6-12 carbon atoms and d. caprolactam, ε-aminocaproic acid, or mixtures thereof such that from 0.5 to 1.5 mols of caprolactam, ε-aminocaproic acid, or mixtures thereof are reacted per mol of carboxyl groups in said acid
Claim 5
Dependent Claim 36 words
component. 2. A method as in claim 1 wherein, in said polyamide melt adhesive, 0.8 to 1.2 mols of caprolactam, ε-aminocaproic acid, or mixtures thereof are employed per mol of carboxy groups in said acid component.
Claim 6
Dependent Claim 33 words
A method as in claim 1 wherein said dimerized fatty acid according to (a) (1) is a fatty acid having a content of more than 90 percent by weight of dimeric fatty acid.
Claim 7
Dependent Claim 34 words
A method as in claim 1 wherein the ratio of carboxylic acids according to (a) (1) and (2) to carboxylic acid according to (b) in said polyamide melt adhesive is between 0.1:1 and 3.0:1.
Claim 8
Dependent Claim 21 words
A method as in claim 1 wherein, in said polyamide melt adhesive, sebacic acid is the co-dicarboxylic acid according to (b).
Claim 9
Dependent Claim 20 words
A method as in claim 1 wherein, in said polyamide melt adhesive, hexamethylene diamine is the diamine according to (c).

References Cited (Backward Citations)

GB1000216A Cited
US3499853A Cited
US3447999A Cited
US3637551A Cited
US3639313A Cited
US3637550A Cited
US3859234A Cited
US3781234A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-08-29 1981-02-28 1981-08-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-08-29 1985-02-28 1985-08-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-08-29 1989-02-28 1989-08-30 $7700.00 Window Closed / Lapsed

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