Patent US4812510A successfully refreshed from Google Patents.
US4812510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small particle size latex based on vinyl acetate polymers
Assignee: Akzo Nobel Paints LLC
•
Filing: 1986-04-17
•
Granted: 1989-03-14
•
Expires: 2006-04-17
Abstract
Abstract Colloid-free vinyl acetate latexes having an average particle size between 400 ANGSTROM to 700 ANGSTROM at a concentration of 30 to 50% by weight have been prepared. The latexes comprise 60 to 100 weight parts of vinyl acetate monomer with about 40 to 0 weight parts of one or more ethylenically unsaturated comonomers such that the glass transition temperature of the polymers are between -10 DEG and 40 DEG C. The latexes are prepared by emulsion polymerization in aqueous medium, in the presence of 0.05 to 20 parts of an anionic surfactant, e.g., alpha-olefin surfactant, and 0.05 to 15 parts of an ionic comonomer, e.g., sodium 2-acrylamido-2-methylpropane sulfonate (Na-AMPS). The interior wall primer-sealer derived from these fine particle size vinyl acetate latexes showed excellent enamel hold-out properties and paint stability. The latexes may also be applied aas binders in the manufacture of other paints, adhesives, papers, and as textile sizes.
Inventors
- 👤 Gerald W. Barnett
- 👤 Tien T. Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C08L; C08L33/00; C08L33/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
142 words
A paint coating composition containing a polymeric binder of a stable, clean, water dispersed vinyl acetate copolymer latex comprising on a polymeric solids weight basis: the vinyl acetate copolymer comprising copolymerized monomers of 60 to 100 weight parts vinyl acetate, 0.05 to 15 weight parts of an ionic comonomer selected from a sulfonate salt of an ethylenically unsaturated monomer or a phosphate salt of 2-hydroxyethyl methacrylate, and 0 to 40 weight parts of other ethylenically unsaturated monomer, where said monomers are copolymerized simultaneously by aqueous emulsion copolymerization in the presence of 0.05 to 20 weight parts of an alpha-olefin sulfonate salt anion surfactant having the structure: R--CH═CH--CH.sub.2 --SO.sub.3 M where R is an aliphatic carbon chain and M is selected from sodium, potassium or ammonium; said vinyl acetate copolymer having an average polymer particle size between about 400 A and 1000 A.
Claim 2
Dependent Claim
142 words
A paint coating composition containing a polymeric binder of a stable, clean, water dispersed vinyl acetate copolymer latex comprising on a polymeric solids weight basis: the vinyl acetate copolymer comprising copolymerized monomers of 60 to 100 weight parts vinyl acetate, 0.05 to 15 weight parts of an ionic comonomer selected from a sulfonate salt of an ethylenically unsaturated monomer or a phosphate salt of 2-hydroxyethyl methacrylate, and 0 to 40 weight parts of other ethylenically unsaturated monomer, where said monomers are copolymerized simultaneously by aqueous emulsion copolymerization in the presence of 0.05 to 20 weight parts of an alpha-olefin sulfonate salt anion surfactant having the structure: R--CH═CH--CH.sub.2 --SO.sub.3 M where R is an aliphatic carbon chain and M is selected from sodium, potassium or ammonium; said vinyl acetate copolymer having an average polymer particle size between about 400 A and 1000 A.
Claim 3
Dependent Claim
17 words
The coating composition of claim 1 where the ionic comonomer comprises an acrylamido alkyl sulfonic acid salt.
Claim 4
Dependent Claim
17 words
The coating composition of claim 1 where the ionic comonomer comprises a methacrylamido alkyl sulfonic acid salt.
Claim 5
Dependent Claim
15 words
The coating composition in claim 1 where the ionic comonomer comprises a sodium styrene sulfonate.
Claim 6
Dependent Claim
13 words
The composition in claim 4 where the ionic comonomer comprises sodium sulfoethyl methacrylate.
Claim 7
Dependent Claim
14 words
The coating composition in claim 1 where the ionic monomer comprises sodium vinyl sulfonate.
Claim 8
Dependent Claim
16 words
The coating composition in claim 1 where the ionic comonomer comprises a sodium alkyl allyl sulfosuccinate.
Claim 9
Dependent Claim
18 words
The coating composition in claim 1 where the phosphate ionic monomer of 2-hydroxyethyl methacrylate is a mono-phosphate salt.
Claim 10
Dependent Claim
18 words
The coating composition in claim 1 where the phosphate ionic monomer of 2-hydroxyethyl methacrylate is a di-phosphate salt.
Claim 11
Dependent Claim
15 words
The coating composition in claim 1 where the ionic monomer comprises sodium 1-allyloxy-2-hydroxy propane sulfonate.
Claim 12
Dependent Claim
15 words
The coating composition in claim 1 where the ionic monomer comprises sodium acrylamide-2-methyl propane sulfonate.
Claim 13
Dependent Claim
14 words
The coating composition of claim 1 where M in the anionic surfactant is sodium.
Claim 14
Dependent Claim
14 words
The coating composition of claim 1 where M in the anionic surfactant is potassium.
Claim 15
Dependent Claim
14 words
The coating composition in claim 1 where M in the anionic surfactant is ammonium.
Claim 16
Dependent Claim
23 words
The coating composition in claim 1 where the vinyl acetate copolymer has an average polymer particle size between about 400 and 700 Angstroms.
Claim 17
Dependent Claim
36 words
The coating composition in claim 1 where the vinyl acetate copolymer comprises between 60 and 95 weight parts of copolymerized vinyl acetate monomer and between 5 and 40 weight parts of copolymerized other ethylenically unsaturated monomer.
Claim 18
Dependent Claim
36 words
The coating composition in claim 16 where the vinyl acetate copolymer comprises between 60 and 95 weight parts of copolymerized vinyl acetate monomer and between 5 and 40 weight parts of copolymerized acrylic or methacrylic monomer.
Claim 19
Dependent Claim
34 words
The coating composition in claim 17 where the vinyl acetate copolymer comprises between 60 and 80 weight parts of copolymerized vinyl acetate monomer and between 20 and 40 weight parts of copolymerized butyl acrylate.
References Cited (Backward Citations)
US2300920A
Cited
DE1178597B
Cited
US3306871A
Cited
GB886984A
Cited
US3318830A
Cited
US3320199A
Cited
GB1117711A
Cited
US3563963A
Cited
GB1307890A
Cited
GB1350282A
Cited
US3933716A
Cited
US3929706A
Cited
US3931087A
Cited
US4051093A
Cited
JPS54103498A
Cited
JPS54103497A
Cited
EP0008775A1
Cited
US4357442A
Cited
JPS58129015A
Cited
JPS6026003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |