EP0259968A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Acrylate hot melt adhesive containing zinc carboxylate
Assignee: 3M Co
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Filing: 1987-07-31
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Granted: —
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Expires: 2007-07-31
Abstract
Abstract An improved hot melt pressure sensitive adhesive composition comprises copolymerized monomeric acrylate or methacrylate ester of a non-tertiary alcohol, polar monomer such as acrylic acid, 2-polystyrylethyl methacrylate macromolecular monomer and sufficient zinc carboxylate to endow the composition with improved melt flow properties and cohesive strength. The invention also provides adhesive coated sheet materials comprising the adhesive composition coated onto a flexible sheet.
Inventors
- 👤 Rudyard M Minnesota Mining And Enanoza
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 17:18
CPC Classifications
C; C08; C08F; C08F290/00; C08F290/02; C08F290/04; C08F290/044; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A hot melt pressure-sensitive adhesive composition comprising copolymer consisting essentially of copolymerized monomers a, b, and c, as follows: (a) acrylic or methacrylic acid ester of a non-tertiary alcohol, said alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4-12; (b) polar monomer copolymerizable with said monomeric acrylic or methacrylic acid ester; and (c) 2-polystyryl- ethyl methacrylate macromolecular monomer; characterized by including sufficient zinc carboxylate to endow the composition with improved melt flow properties and cohesive strength.
Claim 2
Dependent Claim
85 words
A hot melt pressure-sensitive adhesive composition comprising copolymer consisting essentially of copolymerized monomers a, b, and c, as follows: (a) acrylic or methacrylic acid ester of a non-tertiary alcohol, said alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4-12; (b) polar monomer copolymerizable with said monomeric acrylic or methacrylic acid ester; and (c) 2-polystyryl- ethyl methacrylate macromolecular monomer; characterized by including sufficient zinc carboxylate to endow the composition with improved melt flow properties and cohesive strength.
Claim 3
Dependent Claim
26 words
The adhesive composition of claim 1 further characterized by said zinc carboxylate being selected from the group consisting of zinc acetate, zinc octoate, and zinc neodecanoate.
Claim 4
Dependent Claim
29 words
The adhesive composition of claim 1 further characterized by the amount of zinc carboxylate being from about 0.1 to 5% by weight based on the weight of said copolymer.
Claim 5
Dependent Claim
21 words
The adhesive composition of claim 1 further characterized by including sufficient tackifier resin to endow said composition with improved adhesive tack.
Claim 6
Dependent Claim
106 words
An adhesive coated sheet material comprising a backing sheet coated on at least a portion of one major surface with a hot melt pressure sensitive adhesive composition comprising copolymer consisting essentially of copolymerized monomers a, b, and c, as follows: (a) acrylic or methacrylic acid ester of a non-tertiary alcohol, said alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4-12; (b) polar monomer copolymerizable with said monomeric acrylic or methacrylic acid ester; and (c) 2-polystyryl- ethyl methacrylate macromolecular monomer; characterized by including sufficient zinc carboxylate to endow the composition with improved melt flow properties and cohesive strength.
Claim 7
Dependent Claim
106 words
An adhesive coated sheet material comprising a backing sheet coated on at least a portion of one major surface with a hot melt pressure sensitive adhesive composition comprising copolymer consisting essentially of copolymerized monomers a, b, and c, as follows: (a) acrylic or methacrylic acid ester of a non-tertiary alcohol, said alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4-12; (b) polar monomer copolymerizable with said monomeric acrylic or methacrylic acid ester; and (c) 2-polystyryl- ethyl methacrylate macromolecular monomer; characterized by including sufficient zinc carboxylate to endow the composition with improved melt flow properties and cohesive strength.
Claim 8
Dependent Claim
28 words
The adhesive coated sheet material of claim 5 further characterized by said zinc carboxylate being selected from the group consisting of zinc acetate zinc, octoate, and zinc neodecanoate.
Claim 9
Dependent Claim
30 words
The adhesive coated sheet material of claim 5 further characterized by the amount of zinc carboxylate being from about 0.1 to 5% by weight based on weight of said copolymer.
Claim 10
Dependent Claim
24 words
The adhesive coated sheet material of claim 5 further characterized by including sufficient tackifier resin to endow said adhesive composition with improved adhesive tack.
References Cited (Backward Citations)
No citation records indexed.
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