US4826907A
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Acrylic or methacrylic resin emulsion coating composition, and its use
Assignee: Nippon Carbide Industries Co Inc
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Filing: 1985-10-04
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Granted: 1989-05-02
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Expires: 2005-10-04
Abstract
Abstract An acrylic or methacrylic resin emulsion coating composition comprising a blended mixture composed of (1) 100 parts by weight as solid resin content of a copolymer resin emulsion [A], the copolymer resin therein having a glass transition temperature Tg(A), determined by the DSC method, of about -10 DEG to about -55 DEG C., and said copolymer resin emulsion [A] being an aqueous emulsion-copolymerization product being free from a copolymerizable diallyl component and derived from acrylic and/or methacrylic monomers (a) and (b) specified in the claims in the presence of a polyoxyethylene/polyoxypropylene block copolymer, (2) 20 to 300 parts by weight as solid resin content of a copolymer emulsion [B], the copolymer resin therein having a glass transition temperature Tg(B), determined by the DSC method, of less than 0 DEG C., and satisfying the following equation Tg(B)-Tg(A)=10 DIFFERENCE 55 DEG C. and said copolymer resin emulsion [B] being an aqueous emulsion-copolymerization product being free from a copolymerizable diallyl component and derived from acrylic and/or methacrylic monomers (a)' and (b)' specified in the claims in the presence of a polyoxyethylene/polyoxypropylene block copolymer, and (3) about 0.2 to about 10 parts by weight, based on the total weight as solid resin content of emulsions [A] and [B], of a water-soluble polyvalent metal salt (C) of an inorganic or organic acid, the metal salt (C) having a solubility of at least 5 when it is expressed as the grams of said metal salt dissolved in 100 g of water at 20 DEG C.
Inventors
- 👤 Kazuhiro Murao
- 👤 Akira Maruta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08L; C08L2205/00; C08L2205/02; C08L33/00; C08L33/04; C08L33/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
308 words
An acrylic or methacrylic resin emulsion coating composition comprising a blended mixture composed of (1) 100 parts by weight as solid resin content of a copolymer resin emulsion [A], the copolymer resin therein having a glass transition temperature Tg(A), determined by the DSC method, of -10° to about -55° C., and said copolymer resin emulsion [A] being an aqueous emulsion-copolymerization product being free from a copolymerizable diallyl component and prepared by emulsion copolymerization of from 95 to 99.5% by weight of at least one monomeric ester (a) of at least one of acrylic and methacrylic acid and 0.5 to 5% by weight of at least one alpha,beta-unsaturated carboxylic acid (b) in the presence of, as a nonionic surface-active agent, a polyoxyethylene/polyoxypropylene block copolymer, (2) 20 to 300 parts by weight as solid resin content of a copolymer resin emulsion [B], the copolymer resin therein having a glass transition temperature Tg(B), determined by the DSC method, of less than 0° C., and satisfying the following equation 10° C.≦Tg(B)-Tg(A)≦55° C. and said copolymer resin emulsion [B] being an aqueous emulsion-copolymerization product being free from a copolymerizable diallyl component and prepared by emulsion copolymerization of from 95 to 99.5% by weight of at least one monomeric ester (a)' of at least one of acrylic and methacrylic acid and 0.5 to 5% by weight of at least one alpha,beta-unsaturated carboxylic acid (b)' in the presence of, as a nonionic surface-active agent, a polyoxyethylene/polyoxypropylene block copolymer, and (3) about 0.2 to about 10 parts by weight per 100 parts of resins, as solids, of emulsions [A] and [B] combined, of a water-soluble polyvalent metal salt [C] of an inorganic or organic acid, the metal salt [C] having a solubility of at least 5 when it is expressed as the grams of said metal salt dissolved in 100 g of water at 20° C.
Claim 2
Dependent Claim
308 words
An acrylic or methacrylic resin emulsion coating composition comprising a blended mixture composed of (1) 100 parts by weight as solid resin content of a copolymer resin emulsion [A], the copolymer resin therein having a glass transition temperature Tg(A), determined by the DSC method, of -10° to about -55° C., and said copolymer resin emulsion [A] being an aqueous emulsion-copolymerization product being free from a copolymerizable diallyl component and prepared by emulsion copolymerization of from 95 to 99.5% by weight of at least one monomeric ester (a) of at least one of acrylic and methacrylic acid and 0.5 to 5% by weight of at least one alpha,beta-unsaturated carboxylic acid (b) in the presence of, as a nonionic surface-active agent, a polyoxyethylene/polyoxypropylene block copolymer, (2) 20 to 300 parts by weight as solid resin content of a copolymer resin emulsion [B], the copolymer resin therein having a glass transition temperature Tg(B), determined by the DSC method, of less than 0° C., and satisfying the following equation 10° C.≦Tg(B)-Tg(A)≦55° C. and said copolymer resin emulsion [B] being an aqueous emulsion-copolymerization product being free from a copolymerizable diallyl component and prepared by emulsion copolymerization of from 95 to 99.5% by weight of at least one monomeric ester (a)' of at least one of acrylic and methacrylic acid and 0.5 to 5% by weight of at least one alpha,beta-unsaturated carboxylic acid (b)' in the presence of, as a nonionic surface-active agent, a polyoxyethylene/polyoxypropylene block copolymer, and (3) about 0.2 to about 10 parts by weight per 100 parts of resins, as solids, of emulsions [A] and [B] combined, of a water-soluble polyvalent metal salt [C] of an inorganic or organic acid, the metal salt [C] having a solubility of at least 5 when it is expressed as the grams of said metal salt dissolved in 100 g of water at 20° C.
Claim 3
Dependent Claim
31 words
The composition of claim 1 wherein the copolymer resins in the copolymer resin emulsions [A] and [B] have an average particle diameter in the range of from 0.25 to 0.60 micron.
Claim 4
Dependent Claim
69 words
The composition of claim 1 wherein the ester (a) or (a)' is at least one member selected from the group consisting of C 1 -C 10 alkyl esters of acrylic acid, C 1 -C 10 alkyl esters of methacrylic acid, glycidyl esters of acrylic acid, glycidlyl esters of methacrylic acid, hydroxy-(C 1 -C 4 )alkyl esters of acrylic acid and hydroxy-(C 1 -C 4 )alkyl esters of methacrylic acid.
Claim 5
Dependent Claim
39 words
The composition of claim 1 wherein the alpha, beta-unsaturated carboxylic acid (b) or (b)' is at least one member selected from the group consisting of alpha, beta-unsaturated carboxylic acids having 3, 4 or 5 carbon atoms and anhydrides thereof.
Claim 6
Dependent Claim
39 words
The coating composition of claim 1 wherein the water-soluble polyvalent metal salt [C] is at least one metal salt selected from the group consisting of lower aliphatic carboxylic acid salts, hydrochlorides, sulfates and nitrites of divalent or trivalent metals.
Claim 7
Dependent Claim
39 words
The coating composition of claim 1 wherein the total solids resin content of the copolymer resin emulsions [A] and [B] is about 30 to about 70% by weight based on the total weight of the emulsions [A] and [B].
Claim 8
Dependent Claim
38 words
The coating composition of claim 1 which further comprises at least one additive selected from the group consisting of other water-dispersible resins, fillers, coloring agents, antiseptics, dispersing agents, thickening agents, thixotropic agents, antifreezing agents and pH adjusting agents.
Claim 9
Dependent Claim
56 words
The composition of claim 1 wherein the esters (a) and (a)' are independently selected from the group consisting of methylacrylate, ethylacrylate, butylacrylate, 2-ethylhexylacrylate, methylmethacrylate, butylmethacrylate, 2-ethylhexylmethacrylate and mixtures thereof; and wherein the alpha,beta-unsaturated carboxylic acids (b) and (b)' are each independently selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid and mixtures thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |