US3909479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic dispersions containing only nonfunctional groups
Assignee: Cook Paint and Varnish Co
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Filing: 1971-08-16
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Granted: 1975-09-30
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Expires: 1991-08-16
Abstract
Abstract A process and composition for a stable polymer dispersion formed by copolymerizing vinyl monomers containing no functional OH and COOH groups in the presence of an alkylated melamine-formaldehyde reaction product dissolved in an aliphatic hydrocarbon in which the copolymer product is insoluble.
Inventors
- 👤 Howard J Wright
- 👤 Horn Charles R Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:49
CPC Classifications
C; C08; C08F; C08F283/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
A PROCESS FOR CREATING A STABLE ACRYLIC DISPERSION CONSISTING OF COPOLYMER A MONOMER MIXTURE OF 22% STYRENE, 26% BUTYL METHACRYLATE, 10% ALPHA METHYL STYRENE, 20% ACRYLONITRILE, AND 22% ETHYL METHACRYLATE, IN THE PRESENCE OF A SOLUTION OF ALKYLATED MELAMINE-FORMALDEHYDE CONDENSATE DISSOLVED IN AN ESSENTIALLY ALPHATIC HYDROCARBON.
Claim 2
Dependent Claim
46 words
A PROCESS FOR CREATING A STABLE ACRYLIC DISPERSION CONSISTING OF COPOLYMER A MONOMER MIXTURE OF 22% STYRENE, 26% BUTYL METHACRYLATE, 10% ALPHA METHYL STYRENE, 20% ACRYLONITRILE, AND 22% ETHYL METHACRYLATE, IN THE PRESENCE OF A SOLUTION OF ALKYLATED MELAMINE-FORMALDEHYDE CONDENSATE DISSOLVED IN AN ESSENTIALLY ALPHATIC HYDROCARBON.
Claim 3
Dependent Claim
43 words
A process for creating a stable acrylic dispersion consisting of copolymerizing a monomer mixture of 27.5% styrene, 31.5% butyl methacrylate, 15.5% alpha methyl styrene, and 25.5% acrylonitrile, in the presence of a solution of alkylated melamine-formaldehyde condensate dissolved in an essentially aliphatic hydrocarbon.
Claim 4
Dependent Claim
43 words
A process for creating a stable acrylic dispersion consisting of copolymerizing a monomer mixture of 27.5% styrene, 31.5% butyl methacrylate, 15.5% alpha methyl styrene, and 25.5% acrylonitrile, in the presence of a solution of alkylated melamine-formaldehyde condensate dissolved in an essentially aliphatic hydrocarbon.
Claim 5
Dependent Claim
46 words
A stable acrylic dispersion formed by the process consisting of copolymerizing a monomer mixture of 22% styrene, 26% butyl methacrylate, 10% alpha methyl styrene, 20% acrylonitrile, and 22% ethyl methacrylate, in the presence of a solution of alkylated melamine-formaldehyde condensate dissolved in an essentially aliphatic hydrocarbon.
Claim 6
Dependent Claim
46 words
A stable acrylic dispersion formed by the process consisting of copolymerizing a monomer mixture of 22% styrene, 26% butyl methacrylate, 10% alpha methyl styrene, 20% acrylonitrile, and 22% ethyl methacrylate, in the presence of a solution of alkylated melamine-formaldehyde condensate dissolved in an essentially aliphatic hydrocarbon.
Claim 7
Dependent Claim
43 words
A stable acrylic dispersion formed by the process consisting of copolymerizing a monomer mixture of 27.5% styrene, 31.5% butyl methacrylate, 15.5% alpha methyl styrene, and 25.5% acrylonitrile, in the presence of a solution of alkylated melamine-formaldehyde condensate dissolved in an essentially aliphatic hydrocarbon.
Claim 8
Dependent Claim
43 words
A stable acrylic dispersion formed by the process consisting of copolymerizing a monomer mixture of 27.5% styrene, 31.5% butyl methacrylate, 15.5% alpha methyl styrene, and 25.5% acrylonitrile, in the presence of a solution of alkylated melamine-formaldehyde condensate dissolved in an essentially aliphatic hydrocarbon.
References Cited (Backward Citations)
US3183282A
Cited
US3365414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |