EP0379932B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Water-soluble adhesive compounds and their use in preparing permanently temperature-resistant splittable films adhering to damp substrates
Assignee: Lohmann GmbH and Co KG
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Filing: 1990-01-16
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Granted: 1993-04-07
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Expires: 2010-01-16
Abstract
Abstract The invention relates to a water-soluble adhesive compound which consists of: a) 100 parts by weight of at least one water-soluble copolymer composed of 55 to 90% by weight of at least one vinylcarboxylic acid, 5 to 35% by weight of at least one hydroxyl group-containing (meth)acrylate, 1 to 15% by weight of at least one N-substituted (meth)acrylamide derivative and 0.05 to 10% by weight of at least one vinylcarboxylic acid salt, b)50 to 200 parts by weight of at least one water-soluble plasticiser from the group comprising the polyoxyalkylenes having a molecular weight of up to 1000 and c) 0.1 to 8 parts by weight of a cross-linking agent, and the use of these adhesive compounds for preparing jointing tapes.
Inventors
- 👤 Zbigniew Dipl.-Chem. Dr. Czech
- 👤 Jörg Wehmann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 19:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/0091; C09; C09J; C09J133/00; C09J133/02; C09J161/00; C09J161/20; C09J161/32; C09J171/00; C09J171/02; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08L; C08L2666/00; C08L2666/02; C08L2666/14; C08L71/00; C08L71/02; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2887; Y10T428/2891; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A water-soluble, pressure-sensitive adhesive mass comprising a) 100 parts by weight of at least one water-soluble copolymer of 55 to 90%-wt of at least one vinylcarboxylic acid 5 to 35%-wt of at least one hydroxyl groups-containing (meth-)acrylate 1 to 15%-wt of at least one N-substituted (meth-)-acrylamide derivative and 0.05 to 10%-wt of at least one vinylcarboxylic acid salt, b) 50 to 200 parts by weight of at least one water-soluble softener of the polyoxyalkylene group having a molecular mass of up to 1000 and c) 0.1 to 8 parts by weight of a cross-linking agent.
Claim 2
Dependent Claim
45 words
The water-soluble, pressure-sensitive adhesive mass according to claim 1, characterized in that the vinylcarboxylic acid of copolymer a) is selected from the group consisting of (meth-)acrylic acid, β-acryloyloxypropionic acid, vinylacetic acid, fumaric acid, crotonic acid, aconitic acid, or itaconic acid, or mixtures of these acids.
Claim 3
Dependent Claim
28 words
The water-soluble, pressure-sensitive adhesive mass according to claim 1, characterized in that the hydroxyl groups-containing (meth-)acrylate of copolymer a) is a hydroxyalkyl(meth-)acrylate, particularly a 2-hydroxyethyl(meth-)acrylate, 2-hydroxypropyl(meth-)acrylate and/or 4-hydroxybutyl(meth-)acrylate.
Claim 4
Dependent Claim
74 words
The water-soluble, pressure-sensitive adhesive mass according to claim 1, characterized in that the N-substituted acrylamide derivative of copolymer a) is an N-substituted (meth-)acrylamide derivative of the general formula in which R₁ and R₂ are the same or different, and can represent an alkyl-, aryl-, arylalkyl-, alkylaryl-, alkoxyalkyl-, alkoxyaryl-, carboxylalkyl-, carboxylaryl-, acetylalkyl-, or an acetylalkoxyalkyl group, wherein R₁ and R₂ can also be a hydrogen atom, and R₃ a hydrogen atom or a methyl group.
Claim 5
Dependent Claim
31 words
The water-soluble, pressure-sensitive adhesive mass according to claim 1, characterized in that the vinylcarboxylic acid salt of copolymer a) is a metal salt, preferably an alkali salt or an ammonium salt.
Claim 6
Dependent Claim
43 words
The water-soluble, pressure-sensitive adhesive mass according to claim 1, characterized in that the water-soluble softener b) having a molecular mass below 1000 is a polypropylene glycol, polyethylene glycol, polyoxypropylene/polyoxyethylene copolymer, monoethylene glycol dimethylether and/or polyethylene glycol dimethylether or a mixture of these compounds.
Claim 7
Dependent Claim
34 words
The water-soluble, pressure-sensitive adhesive mass according to claim 1, characterized in that the cross-linking agent is a metal chelate, a metallic acid ester, an epoxide, an aziridine, a triazine or a melamine formaldehyde resin.
Claim 8
Dependent Claim
45 words
A process for the production of the pressure-sensitive adhesive mass according to any one of claims 1 to 7, characterized in that copolymer a) is produced by radical polymerisation of the monomers in an organic solvent, and that subsequently components b) and c) are added.
Claim 9
Dependent Claim
38 words
The process according to claim 8, characterized in that acetone, benzine having boiling limits of 60/95 or 80/110, toluene, isopropyl alcohol, propyl alcohol, butyl alcohol, isobutyl alcohol, ethylacetate, or mixtures of these solvents are used as organic solvents.
Claim 10
Dependent Claim
28 words
The use of the water-soluble, pressure-sensitive adhesive masses according to claims 1 to 7 for the production of splice tapes having continuous temperature-resistance and adherence to moist substrates.
References Cited (Backward Citations)
No citation records indexed.
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