US3876578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer emulsion/dispersion blend compositions for coatings
Assignee: Kureha Corp
•
Filing: 1974-02-05
•
Granted: 1975-04-08
•
Expires: 1994-02-05
Abstract
Abstract A polymer emulsion composition for forming coating films having improved anti-blocking and slipping properties can be produced by blending into combination:
Inventors
- 👤 Toshio Takada
- 👤 Masaki Kobori
- 👤 Noboru Kozima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:27
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
A POLYMER EMULSION USEFUL FOR FORMING COATINNGS COMPRISING IN ADMIXTURE (1) 100 PARTS, AS RESIN, OF A POLYMER EMULSION, WHEREIN THE POLYMER PARTICLES IN THE EMULSION HAVE A PARTICLE SIZE RANGE OF FROM 0.05 TO 0.5 MICRON, AND (2) FROM 0.01 TO 5 PARTS BY WEIGHT, AS RESIN, OF A POLYMER DISPERSION OR DRIED POLYMER THEREOF WHEREIN THE POLYMER PARTICLES HAVE A PARTICLE SIZE RANGE OF 1 TO 5 MICRONS, SAID POLYMER DISPERSION BEING PREPARED BY DISPERSION 100 PARTS BY WEIGHT OF A FIRST MONOMER SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE AND STYRENE AND FROM 0.01 TO 10 PARTS BY WEIGHT OF A SECOND MONOMER INTO PARTICLES HAVING SIZE RANGE OF NOT SAID FIRST MONOMER INTO PARTICLES HAVING A SIZE RANGE OF NOT MORE THAN 5 MICRONS INTO AN AQUEOUS SOLUTION OF A SUSPENDING AGENT AND THEN CAUSING SAID MONOMERS TO POLYMERIZE.
Claim 2
Dependent Claim
144 words
A POLYMER EMULSION USEFUL FOR FORMING COATINNGS COMPRISING IN ADMIXTURE (1) 100 PARTS, AS RESIN, OF A POLYMER EMULSION, WHEREIN THE POLYMER PARTICLES IN THE EMULSION HAVE A PARTICLE SIZE RANGE OF FROM 0.05 TO 0.5 MICRON, AND (2) FROM 0.01 TO 5 PARTS BY WEIGHT, AS RESIN, OF A POLYMER DISPERSION OR DRIED POLYMER THEREOF WHEREIN THE POLYMER PARTICLES HAVE A PARTICLE SIZE RANGE OF 1 TO 5 MICRONS, SAID POLYMER DISPERSION BEING PREPARED BY DISPERSION 100 PARTS BY WEIGHT OF A FIRST MONOMER SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE AND STYRENE AND FROM 0.01 TO 10 PARTS BY WEIGHT OF A SECOND MONOMER INTO PARTICLES HAVING SIZE RANGE OF NOT SAID FIRST MONOMER INTO PARTICLES HAVING A SIZE RANGE OF NOT MORE THAN 5 MICRONS INTO AN AQUEOUS SOLUTION OF A SUSPENDING AGENT AND THEN CAUSING SAID MONOMERS TO POLYMERIZE.
Claim 3
Dependent Claim
31 words
A polymer emulsion composition for coatings as claimed in claim 1 in which said second monomer is a monomer selected from the group consisting of divinyl benzene and ethylene glycol dimethacrylate.
Claim 4
Dependent Claim
28 words
A polymer emulsion composition for coatings as claimed in claim 2 in which said second monomer is in a quantity of from 0.5 to 5 parts by weight.
Claim 5
Dependent Claim
33 words
A polymer emulsion composition for coatings as claimed in claim 1 in which said polymer emulsion is an emulsion selected from the group consisting of vinylidene chloride copolymer emulsions and acrylic copolymer emulsions.
Claim 6
Dependent Claim
32 words
A polymer emulsion composition according to claim 4 wherein the polymer emulsion (1) is a vinylidene chloride copolymer emulsion in which vinylidene chloride constitutes 65% to 95% by weight of the copolymer.
Claim 7
Dependent Claim
32 words
A polymer emulsion according to claim 5 wherein the vinylidene copolymer emulsion is prepared by copolymerizing 91 parts of vinylidene chloride, 9 parts of methyl acrylate and 1 part of itaconic acid.
Claim 8
Dependent Claim
31 words
A polymer emulsion composition according to claim 4 wherein the polymer emulsion (1) is an acrylic copolymer emulsion in which a lower alkyl acrylate constitutes the major portion of the molecule.
Claim 9
Dependent Claim
18 words
A polymer emulsion according to claim 1 wherein component (2) is in the form of a polymer dispersion.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |