Patent US426427A successfully refreshed from Google Patents.
Patent US4267092A successfully refreshed from Google Patents.
US4267092A
Expired / Lapsed
US
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Filler composition comprising a filler and an aqueous binder resin emulsion comprising a quick drying polymer emulsion and a flexible polymer emulsion
Assignee: Polycell Products Ltd
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Filing: 1979-06-21
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Granted: 1981-05-12
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Expires: 1999-06-21
Abstract
Abstract A filler composition consists of 60 to 85% by weight of silica, dolomite and/or calcite of size below 150 μm and of average size above 20 μm, and 40 to 15% by weight of an aqueous emulsion of 40 to 70% solids of a resin binder mixture comprising a quick drying polymer emulsion having a minimum film forming temperature above 5° C. and a flexible polymer emulsion having a minimum film forming temperature below 5° C., the polymer in the emulsion of minimum film forming temperature above 5° C. constituting 60 to 90% by weight of the total polymer in the emulsions.
Inventors
- 👤 Denis V. Glaser
- 👤 Norman Heeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:38
CPC Classifications
C; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C09D131/00; C09D131/02; C09D131/04; C09D5/00; C09D5/34; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/14; C08L31/00; C08L31/02; C08L31/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
177 words
A filler composition comprising, (i) 60 to 85% by weight of a particulate filler selected from the mineral group consisting of silica, dolomite and calcite, or mixtures of any thereof, said particulate filler being of such particle size that at least 95% of the filler passes a 150 μm sieve, at least 50% by weight passes a 53 μm sieve, and having a weight average particle size of at least 20 μm, and correspondingly (ii) 40 to 15% by weight of an aqueous binder resin emulsion of solids content 40 to 70% by weight, said binder resin emulsion comprising (a) a quick drying polymer emulsion having a minimum film forming temperature above 5° C. and (b) a flexible polymer emulsion having a minimum film forming temperature below 5° C., the amount of polymer in said emulsion of minimum film forming temperature above 5° C. being 60 to 90% by weight of the total weight of the polymers in said emulsions, said composition being hardenable to provide a crack-and-weather-resistant finish which can be abraded, for example by sanding.
Claim 2
Dependent Claim
177 words
A filler composition comprising, (i) 60 to 85% by weight of a particulate filler selected from the mineral group consisting of silica, dolomite and calcite, or mixtures of any thereof, said particulate filler being of such particle size that at least 95% of the filler passes a 150 μm sieve, at least 50% by weight passes a 53 μm sieve, and having a weight average particle size of at least 20 μm, and correspondingly (ii) 40 to 15% by weight of an aqueous binder resin emulsion of solids content 40 to 70% by weight, said binder resin emulsion comprising (a) a quick drying polymer emulsion having a minimum film forming temperature above 5° C. and (b) a flexible polymer emulsion having a minimum film forming temperature below 5° C., the amount of polymer in said emulsion of minimum film forming temperature above 5° C. being 60 to 90% by weight of the total weight of the polymers in said emulsions, said composition being hardenable to provide a crack-and-weather-resistant finish which can be abraded, for example by sanding.
Claim 3
Dependent Claim
35 words
A filler composition according to claim 1 wherein the particulate filler is dolomite alone or in admixture with up to 25% by weight, based on the total weight of particulate filler, of silica or calcite.
Claim 4
Dependent Claim
23 words
A filler composition according to claim 1 or claim 2 wherein the composition contains 75 to 80% by weight of the particulate filler.
Claim 5
Dependent Claim
27 words
A filler composition according to any one of claims 1 to 3 wherein the binder resin emulsion has a solids content of 45 to 60% by weight.
Claim 6
Dependent Claim
41 words
A filler composition according to any one of claims 1 to 4 wherein the quick drying polymer emulsion is a surfactant stabilised emulsion of a styrene/2-ethyl hexyl acrylate copolymer containing 40 to 50% by weight of 2 ethyl hexyl acrylate units.
Claim 7
Dependent Claim
37 words
A filler composition according to any one of claims 1 to 5 wherein the flexible polymer emulsion is a surfactant stabilised emulsion of a vinyl acetate/dibutyl maleate copolymer containing about 40% by weight of dibutyl maleate units.
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) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |