Patent EP0212358A2 successfully refreshed from Google Patents.
EP0212358A2
Expired / Lapsed
EP
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Colloid stabilized latex adhesives
Assignee: National Starch and Chemical Investment Holding Corp
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Filing: 1986-07-29
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Granted: —
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Expires: 2006-07-29
Abstract
Abstract Latex adhesives having a Tg of -60 to 0°C characterized by superior rheological properties, are prepared without the use of additional thickeners from a colloid stabilized latex comprising: 65-90% by weight of the latex polymer solids of an acrylate or methacrylate ester monomer polymerized in 10-35% by weight of the latex solids of a polymeric colloid, the polymeric colloid having a Tg of -40 to 0°C, a number average molecular weight of 2,000 to 10,000 and comprising a) 50 to 85% by weight of a monomer of the formula: where R' is hydrogen or methyl and R" is a C 1 -C 12 straight or branched chain alkyl group; b) 10 to 50% by weight of an ethylenically unsaturated mono-or dicarboxylic acid; c) 5 to 30% by weight of an acrylic or methacrylic ester of a polyalkylene oxide, and d) 0 to 30% by weight of another ethylenically unsaturated copolymerizable monomer.
Inventors
- 👤 Carmine P. Iovine
- 👤 Yen-Jer Shih
- 👤 Paul B. Foreman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:46
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06; C09; C09J; C09J151/00; C09J151/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
140 words
A latex adhesive composition having a Tg of -60 to 0°C comprising 65 to 90% by weight of the latex solids of a discontinuous phase of an acrylate or methacrylate ester monomer polymerized in 10 to 35% by weight of the latex solids of a polymeric colloid, the polymeric colloid having a Tg of -40 to 0°C, a number average molecular weight of 2,000 to 10,000 and comprising a) 50 to 85% by weight of a monomer of the formula: where R' is hydrogen or methyl and R" is a C1-C12 straight or branched chain alkyl group; b) 10 to 50% by weight of an ethylenically unsaturated mono- or dicarboxylic acid; c) 5 to 30% by weight of an acrylic or methacrylic ester of a polyalkylene oxide; and d) 0 to 30% by weight of another ethylenically unsaturated copolymerizable monomer.
Claim 2
Dependent Claim
140 words
A latex adhesive composition having a Tg of -60 to 0°C comprising 65 to 90% by weight of the latex solids of a discontinuous phase of an acrylate or methacrylate ester monomer polymerized in 10 to 35% by weight of the latex solids of a polymeric colloid, the polymeric colloid having a Tg of -40 to 0°C, a number average molecular weight of 2,000 to 10,000 and comprising a) 50 to 85% by weight of a monomer of the formula: where R' is hydrogen or methyl and R" is a C1-C12 straight or branched chain alkyl group; b) 10 to 50% by weight of an ethylenically unsaturated mono- or dicarboxylic acid; c) 5 to 30% by weight of an acrylic or methacrylic ester of a polyalkylene oxide; and d) 0 to 30% by weight of another ethylenically unsaturated copolymerizable monomer.
Claim 3
Dependent Claim
35 words
The adhesive of Claim 1 wherein the acrylate or methacrylate monomer used in the polymeric colloid is selected fran the group consisting of the methyl, ethyl, butyl, 2-ethylhexyl, octyl, decyl, dodecyl acrylate or corresponding methacrylates.
Claim 4
Dependent Claim
12 words
The adhesive of Claim 1 wherein the colloid contains polyethylene glycol methacrylate.
Claim 5
Dependent Claim
30 words
The adhesive of Claim 1 wherein the colloid contains an ethylenically unsaturated copolymerizable monomer selected from the group consisting of hydroxyalkyl acrylates or methacrylates; acrylamide, methacrylamide and their N-substituted derivatives.
Claim 6
Dependent Claim
34 words
The adhesive of Claim 1 wherein the acrylate or methacrylate comonomer of the discontinuous phase is selected from the group consisting of the methyl, ethyl, butyl, 2-ethylhexyl, octyl, decyl, dodecyl acrylate or corresponding methacrylates.
Claim 7
Dependent Claim
65 words
The adhesive of Claim 1 wherein a minor portion of the solids of the discontinuous phase comprises a vinyl polymerizable monomer selected from the group consisting of the esters of acrylic or methacrylic acid with C 1 -C 18 alcohols; acrylamide or methacrylamide or their corresponding N-substituted derivatives; vinyl ethers; N-vinyl lactans; halogenated vinyl compounds; alkyl vinyl ketones; diesters and polyalkylene glycol acrylates or methacrylates.
Claim 8
Dependent Claim
38 words
The adhesive of Claim 1 wherein less than 2% by weight of the solids of the discontinuous phase comprises a multifunctional monomer selected from the group consisting of diallyl maleate, triallyl cyanurate, tetraethylene glycol dimethacrylate, and hexa-allyl sucrose.
Claim 9
Dependent Claim
25 words
The adhesive of Claim 1 which is formulated as a pressure sensitive is prepared with a polymeric colloid having a Tg of -40 to -20°C.
Claim 10
Dependent Claim
26 words
The adhesive of Claim 1 which is formulated as a laminating adhesive and is prepared using a polymeric colloid having a Tg of -25 to -10°C.
Claim 11
Dependent Claim
176 words
A process for the preparation of a latex adhesive composition having a Tg of -60 to 0°C comprising the steps of: i) solution polymerizing a) 50 to 85% by weight of a monomer of the formula: where R' is hydrogen or methyl and R" is a C1-C12 straight or branched chain alkyl group; b) 10 to 50% by weight of an ethylenically unsaturated mono- or dicarboxylic acid; c) 5 to 30% by weight of an acrylic or methacrylic ester of a polyalkylene oxide; and d) 0 to 30% by weight of another ethylenically unsaturated copolymerizable monomer; to form an alkali soluble polymer having a Tg of -40 to 0°C and a number average molecular weight of 2,000 to 10,000; ii) neutralizing the salt of (i) with a fugitive alkali to give a water-soluble polymer salt; iii) polymerizing an acrylate or methacrylate monomer or mixture thereof in an aqueous medium in the presence of a free radical catalyst and 10 to 35% by weight of the solids of the total latex of the polymeric colloid of (ii).
Claim 12
Dependent Claim
176 words
A process for the preparation of a latex adhesive composition having a Tg of -60 to 0°C comprising the steps of: i) solution polymerizing a) 50 to 85% by weight of a monomer of the formula: where R' is hydrogen or methyl and R" is a C1-C12 straight or branched chain alkyl group; b) 10 to 50% by weight of an ethylenically unsaturated mono- or dicarboxylic acid; c) 5 to 30% by weight of an acrylic or methacrylic ester of a polyalkylene oxide; and d) 0 to 30% by weight of another ethylenically unsaturated copolymerizable monomer; to form an alkali soluble polymer having a Tg of -40 to 0°C and a number average molecular weight of 2,000 to 10,000; ii) neutralizing the salt of (i) with a fugitive alkali to give a water-soluble polymer salt; iii) polymerizing an acrylate or methacrylate monomer or mixture thereof in an aqueous medium in the presence of a free radical catalyst and 10 to 35% by weight of the solids of the total latex of the polymeric colloid of (ii).
References Cited (Backward Citations)
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