Patent US3839253A successfully refreshed from Google Patents.
US3839253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matte aqueous coating compositions containing pigmented synthetic polymer
Assignee: Dulux Australia Ltd
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Filing: 1972-03-08
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Granted: 1974-10-01
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Expires: 1992-03-08
Abstract
Abstract Coating compositions which dry to a matte film (80* gloss 10 maximum) and comprising an aqueous latex in which is dispersed 45-90 percent by volume based on the solids content of granules of polymer containing 1-75 percent by weight of pigment. The granules have a Stokes diameter of 1-50 micron, a specific weight average mean Stokes diameter related to their volume concentration in the total solids of the coating and an elongation at break of 40 percent maximum.
Inventors
- 👤 R Kershaw
- 👤 F Lubbock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:10
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/40; C09D7/42; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/25; Y10T428/256; Y10T428/259
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
AN AQUEOUS LATEX COATING COMPOSITION CONSISTING ESSENTIALLY OF A PIGMENT AND A SYNTHETIC FILM-FORMING ADDITION POLYMER OF AT LEAST ONE A-B-ETHYLENICALLY UNSATURATED MONOMER DISPERSED IN AN AQUEOUS MEDIUM, AT LEAST A PORTION OF SAID PIGMENT BEING PRESENT IN INSOLUBLE GRANULES OF PIGMENTED SYNTHETIC POLYMER, THE PIGMENT BEING EMBEDDED IN AND SURROUNDED BY THE SYNTHETIC POLYMER, SAID GRANULES OF PIGMENTED SYNTHETIC POLYMER BEING DISPERSED IN SAID AQUEOUS LATEX IN AN AMOUNT OF 45 TO 90 PERCENT BY VOLUME BASED ON THE TOTAL SOLIDS CONTENT OF SAID COATING COMPOSITION, AND FURTHER CHARACTERIZED IN THAT THE SAID GRANULES OF PIGMENTED SYNTHETIC POLYMER: A. CONSIST ESSENTIALLY OF SYNTHETIC POLYMER AND FROM 1-75 PERCENT BY WEIGHT OF PIGMENT PARTICLES AND ARE ESSENTIALLY OF FROM 1-50 MICRON STOKES DIAMETER WITH A WEIGHT AVERAGE MEANS STOKES DIAMETER RELATED TO THEIR VOLUME CONCENTRATION IN THE TOTAL SOLIDS OF THE COATING COMPOSITION ACCORDING TO THE FOLLOWING TABLE:
Claim 2
Dependent Claim
148 words
AN AQUEOUS LATEX COATING COMPOSITION CONSISTING ESSENTIALLY OF A PIGMENT AND A SYNTHETIC FILM-FORMING ADDITION POLYMER OF AT LEAST ONE A-B-ETHYLENICALLY UNSATURATED MONOMER DISPERSED IN AN AQUEOUS MEDIUM, AT LEAST A PORTION OF SAID PIGMENT BEING PRESENT IN INSOLUBLE GRANULES OF PIGMENTED SYNTHETIC POLYMER, THE PIGMENT BEING EMBEDDED IN AND SURROUNDED BY THE SYNTHETIC POLYMER, SAID GRANULES OF PIGMENTED SYNTHETIC POLYMER BEING DISPERSED IN SAID AQUEOUS LATEX IN AN AMOUNT OF 45 TO 90 PERCENT BY VOLUME BASED ON THE TOTAL SOLIDS CONTENT OF SAID COATING COMPOSITION, AND FURTHER CHARACTERIZED IN THAT THE SAID GRANULES OF PIGMENTED SYNTHETIC POLYMER: A. CONSIST ESSENTIALLY OF SYNTHETIC POLYMER AND FROM 1-75 PERCENT BY WEIGHT OF PIGMENT PARTICLES AND ARE ESSENTIALLY OF FROM 1-50 MICRON STOKES DIAMETER WITH A WEIGHT AVERAGE MEANS STOKES DIAMETER RELATED TO THEIR VOLUME CONCENTRATION IN THE TOTAL SOLIDS OF THE COATING COMPOSITION ACCORDING TO THE FOLLOWING TABLE:
Claim 3
Dependent Claim
40 words
The coating composition according to claim 1 in which the weight average mean Stokes diameter of the granules of pigmented synthetic polymer is related to their volume concentration in the total solids of the coating according to the following table:
Claim 4
Dependent Claim
40 words
The coating composition according to claim 1 in which the weight average mean Stokes diameter of the granules of pigmented synthetic polymer is related to their volume concentration in the total solids of the coating according to the following table:
Claim 5
Dependent Claim
13 words
The coating composition according to claim 1 in which the granules are spheroidal.
Claim 6
Dependent Claim
20 words
The coating composition according to claim 1 in which the pigment particles are essentially of less than 1 micron diameter.
Claim 7
Dependent Claim
25 words
The coating composition according to claim 1 in which the volume concentration of granules is 55-75 percent of the total solids content of the composition.
Claim 8
Dependent Claim
30 words
The coating composition according to claim 1 in which the pigment is titanium dioxide and the amount of titanium dioxide in said granules is at least 45 percent by weight.
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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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |