US4154713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer dispersions as a casein replacement
Assignee: Individual
•
Filing: 1974-12-18
•
Granted: 1979-05-15
•
Expires: 1994-12-18
Abstract
Abstract Polymer dispersions useful as a replacement for casein in paper coatings, and paper coating compositions containing such dispersions, are described. The dispersions comprise from about 85 to 95 percent by weight of an ethylenically unsaturated monomer free from additional functionality, i.e., styrene or vinyl esters of acetic acid and/or propionic acid, and from about 5 to 15 percent by weight of acid, i.e., acrylic acid, and basic, i.e., 1-vinylimidazole, monomers. Paper coating compositions containing the dispersion as a casein substitute when applied to paper in a conventional manner have excellent properties including whiteness, wet rub resistance, and water resistance.
Inventors
- 👤 Herbert Zima
- 👤 Josef Forstner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:32
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/60; D21H19/58; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
58 words
An aqueous polymer dispersion comprising the interpolymerization product of the monomer combination as follows: 45-50 percent by weight styrene 36-41 percent by weight butyl acrylate 4-5 percent by weight methacrylamide 3-4 percent by weight acrylic acid 0.5-2.5 percent by weight sodium salt of vinylsulfonic acid 4.5-5.5 percent by weight 1-vinylimidazole, said percent by weight being of said polymer.
Claim 2
Dependent Claim
58 words
An aqueous polymer dispersion comprising the interpolymerization product of the monomer combination as follows: 45-50 percent by weight styrene 36-41 percent by weight butyl acrylate 4-5 percent by weight methacrylamide 3-4 percent by weight acrylic acid 0.5-2.5 percent by weight sodium salt of vinylsulfonic acid 4.5-5.5 percent by weight 1-vinylimidazole, said percent by weight being of said polymer.
Claim 3
Dependent Claim
48 words
An aqueous polymer dispersion comprising the interpolymerization product of the monomer combination as follows: 50-54 percent by weight styrene 33-37 percent by weight ethylhexylacrylate 4-5 percent by weight methacrylamide 3-5 percent by weight acrylic acid 4.5-5.5 percent by weight 1-vinylimidazole, said percent by weight being of said polymer.
Claim 4
Dependent Claim
48 words
An aqueous polymer dispersion comprising the interpolymerization product of the monomer combination as follows: 50-54 percent by weight styrene 33-37 percent by weight ethylhexylacrylate 4-5 percent by weight methacrylamide 3-5 percent by weight acrylic acid 4.5-5.5 percent by weight 1-vinylimidazole, said percent by weight being of said polymer.
Claim 5
Dependent Claim
49 words
An aqueous polymer dispersion comprising the interpolymerization product of the monomer combination as follows: 70 percent by weight vinylacetate 15 percent by weight dibutylfumarate 5 percent by weight butyl acrylate 5 percent by weight acrylic acid 5 percent by weight N-tert.-butyl-aminoethylmethacrylate, said percent by weight being of said polymer.
Claim 6
Dependent Claim
49 words
An aqueous polymer dispersion comprising the interpolymerization product of the monomer combination as follows: 70 percent by weight vinylacetate 15 percent by weight dibutylfumarate 5 percent by weight butyl acrylate 5 percent by weight acrylic acid 5 percent by weight N-tert.-butyl-aminoethylmethacrylate, said percent by weight being of said polymer.
Claim 7
Dependent Claim
73 words
In a paper coating composition comprising a pigment, a filler, and an aqueous dispersion of a binder, the improvement wherein the aqueous dispersion of binder includes an aqueous polymer dispersion comprising the interpolymerization product of from about 45-50 percent by weight styrene 36-41 percent by weight butyl acrylate 4-5 percent by weight methacrylamide 3-4 percent by weight acrylic acid 0.5-2.5 percent by weight sodium salt of vinylsulfonic acid 4.5-5.5 percent by weight 1-vinylimidazole.
Claim 8
Dependent Claim
73 words
In a paper coating composition comprising a pigment, a filler, and an aqueous dispersion of a binder, the improvement wherein the aqueous dispersion of binder includes an aqueous polymer dispersion comprising the interpolymerization product of from about 45-50 percent by weight styrene 36-41 percent by weight butyl acrylate 4-5 percent by weight methacrylamide 3-4 percent by weight acrylic acid 0.5-2.5 percent by weight sodium salt of vinylsulfonic acid 4.5-5.5 percent by weight 1-vinylimidazole.
Claim 9
Dependent Claim
63 words
In a paper coating composition comprising a pigment, a filler, and an aqueous dispersion of a binder, the improvement wherein the aqueous dispersion of binder includes an aqueous polymer dispersion comprising the interpolymerization product of from about 50-54 percent by weight styrene 33-37 percent by weight ethylhexylacrylate 4-5 percent by weight methacrylamide 3-5 percent by weight acrylic acid 4.5-5.5 percent by weight 1-vinylimidazole.
Claim 10
Dependent Claim
63 words
In a paper coating composition comprising a pigment, a filler, and an aqueous dispersion of a binder, the improvement wherein the aqueous dispersion of binder includes an aqueous polymer dispersion comprising the interpolymerization product of from about 50-54 percent by weight styrene 33-37 percent by weight ethylhexylacrylate 4-5 percent by weight methacrylamide 3-5 percent by weight acrylic acid 4.5-5.5 percent by weight 1-vinylimidazole.
Claim 11
Dependent Claim
64 words
In a paper coating composition comprising a pigment, a filler, and an aqueous dispersion of a binder, the improvement wherein the aqueous dispersion of binder includes an aqueous polymer dispersion comprising the interpolymerization product of from about 70 percent by weight vinylacetate 15 percent by weight dibutylfumarate 5 percent by weight butyl acrylate 5 percent by weight acrylic acid 5 percent by weight N-tert.-butyl-aminoethylmethacrylate.
Claim 12
Dependent Claim
64 words
In a paper coating composition comprising a pigment, a filler, and an aqueous dispersion of a binder, the improvement wherein the aqueous dispersion of binder includes an aqueous polymer dispersion comprising the interpolymerization product of from about 70 percent by weight vinylacetate 15 percent by weight dibutylfumarate 5 percent by weight butyl acrylate 5 percent by weight acrylic acid 5 percent by weight N-tert.-butyl-aminoethylmethacrylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |