Patent US4568500A successfully refreshed from Google Patents.
Patent CA1103099A successfully refreshed from Google Patents.
CA1103099A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Water-moistenable adhesive coatings
Assignee: TONECRAFT Ltd
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Filing: 1976-10-15
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Granted: 1981-06-16
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Expires: 1996-10-15
Abstract
Abstract Abstract of the Disclosure The present invention relates to the production of water-moistenable adhesive coatings and to products incorporating such coatings. A two-stage process for applying such coatings to wallcoverings and the like is known. In this process, a water-insoluble resin copolymer, in which at least one monomer is an acid, is deposited and subsequently neutralized upon the substrate. This process suffers from many disadvant-ages, including the need for excessively high application weights, hazards to equipment and operators, and excessive penetration of the copolymer into the substrate resulting in incomplete neutralization thereof by the subsequently applied alkali. In the present invention, these problems are avoided by neutralizing an acidic copolymer to form a salt thereof before applying such salt to the substrate. The salt may then be applied in various ways, such as from an aqueous or organic suspension or in a dried powderous form.
Inventors
- 👤 Francis T. Chau
- 👤 Herbert K. Johnston
- 👤 Alfred Rudin
- 👤 John L. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-08 10:47
CPC Classifications
C; C09; C09J; C09J5/00; C09J133/00; C09J133/04; C09J133/06; C09J133/062; C09J133/064; C09J157/00; C09J157/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
87 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic polymer to give a salt of said polymer, applying said salt to said substrate to form an adhesive coating thereon and, where required, drying the applied coating, said salt being remoistenable and being activatible from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of said water.
Claim 2
Dependent Claim
87 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic polymer to give a salt of said polymer, applying said salt to said substrate to form an adhesive coating thereon and, where required, drying the applied coating, said salt being remoistenable and being activatible from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of said water.
Claim 3
Dependent Claim
120 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic copolymer formed from two or more different monomers, said copolymer comprising ethyl acrylate and one or more of the group consisting of methacrylic acid, acrylic acid and esters of methacrylic acid and acrylic acid, to give a salt of said copolymer, applying said salt to said substrate to form an adhesive coating thereon and, where required, drying the applied coating, said salt being remoistenable and being activatable from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of said water.
Claim 4
Dependent Claim
120 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic copolymer formed from two or more different monomers, said copolymer comprising ethyl acrylate and one or more of the group consisting of methacrylic acid, acrylic acid and esters of methacrylic acid and acrylic acid, to give a salt of said copolymer, applying said salt to said substrate to form an adhesive coating thereon and, where required, drying the applied coating, said salt being remoistenable and being activatable from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of said water.
Claim 5
Dependent Claim
111 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic copolymer consisting of a partially cross-linked copolymer of ethyl acrylate and methacrylic acid, to give a salt of said copolymer, said salt being formed by the direct reaction in an aqueous solution to produce an aqueous suspension of said salt; applying said salt to said substrate to form an adhesive coating thereon, said salt being remoistenable and being activatable from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of water.
Claim 6
Dependent Claim
111 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic copolymer consisting of a partially cross-linked copolymer of ethyl acrylate and methacrylic acid, to give a salt of said copolymer, said salt being formed by the direct reaction in an aqueous solution to produce an aqueous suspension of said salt; applying said salt to said substrate to form an adhesive coating thereon, said salt being remoistenable and being activatable from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of water.
Claim 7
Dependent Claim
16 words
The process of claim 2, wherein said acidic copolymer consists of ethyl acrylate and methacrylic acid.
Claim 8
Dependent Claim
11 words
The process of claim 4 wherein said copolymer is partially cross-linked.
Claim 9
Dependent Claim
25 words
The process of any of claims 1, 2 and 3, wherein said salt is formed by direct reaction in an aqueous suspension of said salt.
Claim 10
Dependent Claim
30 words
The process of any of claims 1, 2 and 3, wherein said aqueous suspension has a solids content of about 10% by weight and is applied directly to said substrate.
Claim 11
Dependent Claim
41 words
The process of any of claims 1, 2 and 3, wherein said aqueous suspension is dried to give said salt in dried form and said salt is applied as a powder to said substrate which has been pre-coated with a tackifier.
Claim 12
Dependent Claim
68 words
The process of any of claims 1, 2 and 3, wherein said salt is formed by direct reaction in an aqueous suspension of said salt, and said aqueous suspension is dried to give said salt in dried form and said salt is subsequently re-suspended in an aqueous suspension or in an organic suspension containing a film-former soluble in the organic suspension medium, prior to coating upon said substrate.
Claim 13
Dependent Claim
36 words
The process of any of claims 1, 2 and 3, wherein said acid polymer is neutralized with an agent selected from the group consisting of potassium hydroxide, sodium hydroxide, lithium hydroxide, magnesium hydroxide and barium hydroxide.
Claim 14
Dependent Claim
90 words
The process of any of claims 1, 2 and 3, wherein said salt is formed by direct reaction in an aqueous suspension of said salt, and said aqueous suspension is dried to give said salt in dried form and said salt is subsequently re-suspended in an aqueous suspension or in an organic suspension containing a film-former soluble in the organic suspension medium, prior to coating upon said substrate, said salt being applied to said substrate as a suspension in methyl ethyl ketone or methyl ethyl ketone wth a lower alcohol.
Claim 15
Dependent Claim
96 words
The process of any of claims 1, 2 and 3, wherein said salt is formed by direct reaction in an aqueous suspension of said salt, and said aqueous suspension is dried to give said salt in dried form and said salt is subsequently re-suspended in an aqueous suspension or in an organic suspension containing a film-former soluble in the organic suspension medium, prior to coating upon said substrate, said salt being applied to said substrate as a suspension in methyl ethyl ketone or methyl ethyl ketone with a lower alcohol, and said film-former being hydroxy-propyl cellulose.
Claim 16
Dependent Claim
165 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic copolymer consisting of a partially cross-linked copolymer of ethyl acrylate and methacrylic acid, to give a salt of said copolymer, said salt being formed by the direct reaction in an aqueous solution to produce an aqueous suspension of said salt; said aqueous suspension having a solids content of about 10% by weight; said aqueous suspension being dried to give said salt in dried form prior to the application of said salt to said substrate; applying said salt to said substrate in said dried form or as an aqueous or organic suspension of said dried salt, to form an adhesive coating thereon; said salt formed in said substrate being remoistenable and being activable from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of said water.
Claim 17
Dependent Claim
165 words
A process for coating a substrate with an adhesive which comprises neutralizing an acidic copolymer consisting of a partially cross-linked copolymer of ethyl acrylate and methacrylic acid, to give a salt of said copolymer, said salt being formed by the direct reaction in an aqueous solution to produce an aqueous suspension of said salt; said aqueous suspension having a solids content of about 10% by weight; said aqueous suspension being dried to give said salt in dried form prior to the application of said salt to said substrate; applying said salt to said substrate in said dried form or as an aqueous or organic suspension of said dried salt, to form an adhesive coating thereon; said salt formed in said substrate being remoistenable and being activable from its dry state by wetting with water into an adhesive state whereby said salt, after removal of said water, is capable of maintaining said substrate in firm and steady adhesion to a surface after removal of said water.
References Cited (Backward Citations)
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