US4746696A
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US
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Polyvinylpyrrolidone shaped adhesive containing aminocarboxylic acid or corresponding lactam
Assignee: Henkel AG and Co KGaA
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Filing: 1987-02-27
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Granted: 1988-05-24
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Expires: 2007-02-27
Abstract
Abstract A soft-rubbing shaped adhesive is based on an adhesive forming polymer solution gelled with a soap-forming gelling agent in the presence of a modifying additive comprising an aminocarboxylic acid or corresponding lactam, preferably an aminocarboxylic acid containing from 4 to 8 carbon atoms. Especially useful modifying additives include caprolactam, the sodium salt of aminocaproic acid, or a mixture thereof.
Inventors
- 👤 Gerhard Gierenz
- 👤 Gabriella Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:51
CPC Classifications
C; C09; C09J; C09J11/00; C09J11/02; C09J9/00; C09J9/005; Y; Y10; Y10S; Y10S526/00; Y10S526/931
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
47 words
In a shaped adhesive composition comprising a soap gel of polyvinylpyrrolidone in an aqueous organic medium with a soap-forming gelling agent, the improvement comprising the additional presence of a modifying additive which is a C 2 -C 12 -aminocarboxylic acid, a corresponding lactam, or a mixture thereof.
Claim 2
Dependent Claim
47 words
In a shaped adhesive composition comprising a soap gel of polyvinylpyrrolidone in an aqueous organic medium with a soap-forming gelling agent, the improvement comprising the additional presence of a modifying additive which is a C 2 -C 12 -aminocarboxylic acid, a corresponding lactam, or a mixture thereof.
Claim 3
Dependent Claim
17 words
The adhesive composition of claim 1, wherein the aminocarboxylic acid contains from 4 to 8 carbon atoms.
Claim 4
Dependent Claim
18 words
The adhesive composition of claim 1, wherein the aminocarboxylic acid or corresponding lactam is ε-aminocaproic acid or ε-caprolactam.
Claim 5
Dependent Claim
34 words
The adhesive composition of claim 1, wherein the aminocarboxylic acid or corresponding lactam is present in an amount of from about 2.5 to 15% by weight, based on the total weight of the composition.
Claim 6
Dependent Claim
26 words
The adhesive composition of claim 4, wherein the aminocarboxylic acid or corresponding lactam is present in an amount of from about 3 to 10% by weight.
Claim 7
Dependent Claim
44 words
The adhesive composition of claim 1, wherein a mixture of an aminocarboxylic acid and its corresponding lactam in a ratio of from about 20-90 parts by weight lactam to 80-10 parts by weight of the aminocarboxylic acid is additionally present as the modifying additive.
Claim 8
Dependent Claim
40 words
The adhesive composition of claim 1, wherein the modifying additive is a mixture of an aminocarboxylic acid and lactam which are present in a ratio of from about 45-75 parts by weight lactam to 55-25 parts by weight aminocarboxylic acid.
Claim 9
Dependent Claim
14 words
The adhesive composition of claim 1, wherein the pH of the composition is alkaline.
Claim 10
Dependent Claim
18 words
The adhesive composition of claim 1, wherein the pH of the composition is from about 9.5 to 11.5.
Claim 11
Dependent Claim
25 words
The adhesive composition of claim 1, wherein the gelling agent is an alkali metal or ammonium soap of a C 12 -C 18 -fatty acid.
Claim 12
Dependent Claim
12 words
The adhesive composition of claim 10, wherein the alkali metal is sodium.
Claim 13
Dependent Claim
31 words
The adhesive composition of claim 1, wherein the gelling agent is a C 10 -C 22 -aliphatic carboxylic acid in combination with an alkali metal, unsubstituted ammonium, or alkyl-substituted ammonium cation.
Claim 14
Dependent Claim
26 words
The adhesive composition of claim 1, wherein the polyvinylpyrrolidone is present in an amount of no more than about 28% by weight of the total composition.
Claim 15
Dependent Claim
22 words
The adhesive composition of claim 13, wherein the polyvinylpyrrolidone is present in an amount of no more than about 25% by weight.
Claim 16
Dependent Claim
18 words
The adhesive composition of claim 13, wherein the polyvinylpyrrolidone has a K- value of about 70 to 90.
Claim 17
Dependent Claim
45 words
The adhesive composition of claim 1, wherein the aqueous organic medium comprises a mixture of water with a low-volatile or substantially non-volatile organic solvent in an amount of at least about 50% water by weight, based on the total weight of the water/organic solvent mixture.
Claim 18
Dependent Claim
27 words
The adhesive composition of claim 16, wherein the water/organic solvent mixture comprises from about 10 to 50 parts by weight solvent to 100 parts by weight water.
Claim 19
Dependent Claim
18 words
The adhesive composition of claim 16, wherein the organic solvent is a mixture of polyglycol ether and glycerol.
Claim 20
Dependent Claim
24 words
The adhesive composition of claim 18, wherein the polyglycol ether is polyethylene glycol having an average molecular weight of from about 400 to 1000.
Claim 21
Dependent Claim
15 words
The adhesive composition of claim 1, wherein the shaped adhesive is a substantially rigid stick.
Claim 22
Independent Claim
50 words
A method for producing a shaped adhesive comprising gelling polyvinylpyrrolidone in the presence of a modifying additive comprising a C 2 -C 12 -aminocarboxylic acid, a corresponding lactam, or mixture thereof in an aqueous organic medium with a soap-forming gelling agent, and molding the gelled adhesive to a shaped form.
Claim 23
Independent Claim
50 words
A method for producing a shaped adhesive comprising gelling polyvinylpyrrolidone in the presence of a modifying additive comprising a C 2 -C 12 -aminocarboxylic acid, a corresponding lactam, or mixture thereof in an aqueous organic medium with a soap-forming gelling agent, and molding the gelled adhesive to a shaped form.
Claim 24
Dependent Claim
25 words
The method of claim 21, wherein the adhesive gel is cast into the mold at a temperature of from about 60° C. to 65° C.
Claim 25
Dependent Claim
16 words
The method of claim 21, wherein the aminocarboxylic acid contains from 4 to 8 carbon atom.
Claim 26
Dependent Claim
17 words
The method of claim 21, wherein the aminocarboxylic acid or corresponding lactam is ε-aminocaproic acid or ε-caprolactam.
Claim 27
Dependent Claim
33 words
The method of claim 21, wherein the aminocarboxylic acid or corresponding lactam is present in an amount of from about 2.5 to 15% by weight, based on the total weight of the composition.
Claim 28
Dependent Claim
25 words
The method of claim 21, wherein the aminocarboxylic acid or corresponding lactam is present in an amount of from about 3 to 10% by weight.
Claim 29
Dependent Claim
41 words
The method of claim 21, wherein the modifying additive is a mixture of an aminocarboxylic acid and its corresponding lactam in a ratio of from about 20-90 parts by weight lactam to about 80-10 parts by weight of the aminocarboxylic acid.
Claim 30
Dependent Claim
36 words
The method of claim 27, wherein the modifying additive is a mixture of an aminocarboxylic acid and lactam in a ratio of from about 45-75 parts by weight lactam to 55-25 parts by weight aminocarboxylic acid.
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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) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |