US4721748A
Expired / Lapsed
US
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Colloid stabilized latex adhesives
Assignee: Ingredion Inc
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Filing: 1986-11-17
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Granted: 1988-01-26
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Expires: 2006-11-17
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: ##STR1## 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
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:19
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06; C09; C09J; C09J151/00; C09J151/003
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
209 words
A process for the preparation of 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: ##STR4## 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 an ethylenically unsaturated copolymerizable monomer selected from the group consisting of hydroxyalkyl acrylates or methacrylates; acrylamide, methacrylamide and their N-substituted derivatives; with the proviso that components a-d total 100% by weight; 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 solution polymer of (i) with a fugitive alkali to give a water-soluble polymer salt; and (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 2
Dependent Claim
209 words
A process for the preparation of 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: ##STR4## 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 an ethylenically unsaturated copolymerizable monomer selected from the group consisting of hydroxyalkyl acrylates or methacrylates; acrylamide, methacrylamide and their N-substituted derivatives; with the proviso that components a-d total 100% by weight; 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 solution polymer of (i) with a fugitive alkali to give a water-soluble polymer salt; and (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 3
Dependent Claim
35 words
The process of claim 1 wherein the acrylate or methacrylate monomer used in the polymeric colloid is selected from the group consisting of the methyl, ethyl, butyl, 2-ethylhexyl, octyl, decyl, dodecyl acrylate or corresponding methacrylates.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein the acrylate monomer is butyl acrylate or 2-ethylhexyl acrylate.
Claim 5
Dependent Claim
32 words
The process of claim 1 wherein the acrylate or methacrylate monomer used in the colloid is present in an amount of 60 to 80% by weight of the solids of the colloid.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein the colloid contains acrylic or methacrylic acid.
Claim 7
Dependent Claim
12 words
The process of claim 1 wherein the colloid contains polyethylene glycol methacrylate.
Claim 8
Dependent Claim
30 words
The process 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 9
Dependent Claim
34 words
The process 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 10
Dependent Claim
14 words
The process of claim 8 wherein the monomer is butyl acrylate or 2-ethylhexyl acrylate.
Claim 11
Dependent Claim
65 words
The process 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 12
Dependent Claim
38 words
The process 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 13
Dependent Claim
33 words
The process of claim 1 wherein the polymerization of step (iii) is performed at a pH of 8 to 10 and a temperature of 20° to 100° C. for 1 to 9 hours.
Claim 14
Dependent Claim
15 words
The process of claim 12 wherein the polymerization is performed at 50° to 85° C.
Claim 15
Dependent Claim
33 words
The process of claim 1 wherein the free radical catalyst is a water soluble peracid or ammonium or alkali salt thereof and is used in an amount of 0.1 to 3 weight percent.
Claim 16
Dependent Claim
14 words
The process of claim 1 wherein the free radical catalyst is a redox couple.
References Cited (Backward Citations)
CA878572A
Cited
US3308078A
Cited
GB1107249A
Cited
US3673142A
Cited
US4136830A
Cited
DE2734801A1
Cited
US4442258A
Cited
US4465803A
Cited
JPS56109201A
Cited
WO1981003333A1
Cited
JPS5792013A
Cited
US4460732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |