US4125677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Levelling control of polar liquids
Assignee: Dulux Australia Ltd
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Filing: 1977-04-29
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Granted: 1978-11-14
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Expires: 1997-04-29
Abstract
Abstract A process of modifying the levelling characteristics of a film of a polar liquid coating composition by incorporating therein 0.5-60% by weight of an amphipathic random copolymer which comprises 5-50% of a monomer which has a chain-like structure at least 80 covalent bonds long and which is soluble in poly(ethylene oxide) of molecular weight 400, and 25-95% of a (meth)acrylate monomer which comprises a chain-like moiety of at least 10 covalent atoms long and which is not soluble in poly(ethylene oxide) of molecular weight 400. The resulting copolymer may be added to polar liquid coating compositions to give useful improvements in flow and levelling characteristics.
Inventors
- 👤 Clive W. Graetz
- 👤 Bruce Leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:12
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/40; C09D7/47; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
190 words
A process of modifying the levelling characteristics of a film of a polar liquid coating composition on a solid substrate, characterised in that there is incorporated in the coating composition 0.5-60.0% by weight of an amphipathic random copolymer of α, β-ethylenically unsaturated monomer comprising; (1) 5-50% by weight of monomer (a), which is monomer having a chain-like molecular structure with a chain-length of at least 80 covelently bonded atoms and which is soluble in poly(ethylene oxide) of molecular weight 400, (2) 25-95% by weight of monomer (b), which is insoluble in poly(ethylene oxide) of molecular weight 400 and has the structure ##STR3## wherein R 1 is H or CH 3 and R 2 is a chain-like moiety of chain length at least 10 covalently bonded atoms, (3) monomer (a) plus monomer (b) to the extent of at least 60% by weight of the total unsaturated monomer, and (4) monomer (a) and monomer (b) in the ratio by weight of from 1 : 19 to and including 1 : 1; and further characterised in that the said amphiphatic random copolymer forms a self-stabilising dispersion in poly(ethylene oxide) of molecular weight 400.
Claim 2
Dependent Claim
190 words
A process of modifying the levelling characteristics of a film of a polar liquid coating composition on a solid substrate, characterised in that there is incorporated in the coating composition 0.5-60.0% by weight of an amphipathic random copolymer of α, β-ethylenically unsaturated monomer comprising; (1) 5-50% by weight of monomer (a), which is monomer having a chain-like molecular structure with a chain-length of at least 80 covelently bonded atoms and which is soluble in poly(ethylene oxide) of molecular weight 400, (2) 25-95% by weight of monomer (b), which is insoluble in poly(ethylene oxide) of molecular weight 400 and has the structure ##STR3## wherein R 1 is H or CH 3 and R 2 is a chain-like moiety of chain length at least 10 covalently bonded atoms, (3) monomer (a) plus monomer (b) to the extent of at least 60% by weight of the total unsaturated monomer, and (4) monomer (a) and monomer (b) in the ratio by weight of from 1 : 19 to and including 1 : 1; and further characterised in that the said amphiphatic random copolymer forms a self-stabilising dispersion in poly(ethylene oxide) of molecular weight 400.
Claim 3
Dependent Claim
102 words
A process of modifying the levelling characteristics of a film of a polar liquid coating composition on a solid substrate according to claim 1, characterised in that the polar liquid coating composition is one member selected from the group consisting of (a) solutions of at least one at least bifunctional ester which contain as functional groups predominantly hydroxyl groups and optionally carboxyl groups, the ester or esters having an average molecular weight of less than 600, (b) solutions of unsaturated polyester resins in α, β ethylenically unsaturated monomers, (c) dispersions in water of particles of film-forming polymers and (d) liquefied powder coatings.
Claim 4
Dependent Claim
72 words
A process of modifying the levelling characteristics of a film of a polar liquid coating composition on a solid substrate according to claim 1, characterised in that monomer (a) is at least one monomer selected from the group consisting of methoxy poly(ethylene oxide) acrylate, methoxy poly(ethylene oxide) methacrylate and the reaction product of a copolymer of methyl methacrylate, hydroxypropyl methacrylate and methacrylic acid in the weight proportions of 79:20:1 with glycidyl methacrylate.
Claim 5
Dependent Claim
63 words
A process of modifying the levelling characteristics of a film of a polar liquid coating composition on a solid substrate according to claim 1, characterised in that monomer (b) is at least one monomer selected from the group consisting of the esters of acrylic and methacrylic acid with lauryl, stearyl and tridecyl alcohols and the methacryl ester of a self-polyester of 12-hydroxystearic acid.
Claim 6
Dependent Claim
37 words
A process of modifying the levelling characteristics of a film of a polar liquid coating composition on a solid substrate according to claim 1, characterised in that portion of the total unsaturated monomer comprises chemically reactive groups.
Claim 7
Dependent Claim
175 words
A film on a solid substrate of a polar liquid coating composition, characterised in that the coating composition comprises 0.5-60.0% by weight of an amphiphatic random copolymer of α, β-ethylenically unsaturated monomer comprising; (1) 5-50% by weight of monomer (a), which is monomer having a chain-like molecular structure with a chain-length of at least 80 covalently bonded atoms and which is soluble in poly(ethylene oxide) of molecular weight 400, (2) 25-95% by weight of monomer (b), which is insoluble in poly(ethylene oxide) of molecular weight 400 and has the structure ##STR4## wherein R 1 is H or CH 3 and R 2 is a chain-like moiety of chain length at least 10 covalently bonded atoms, (3) monomer (a) plus monomer (b) to the extent of at least 60% by weight of the total unsaturated monomer, and (4) monomer (a) and monomer (b) in the ratio by weight of from 1:19 to and including 1:1; and further characterised in that the said amphipathic random copolymer forms a self-stabilising dispersion in poly(ethylene oxide) of molecular weight 400.
Claim 8
Dependent Claim
175 words
A film on a solid substrate of a polar liquid coating composition, characterised in that the coating composition comprises 0.5-60.0% by weight of an amphiphatic random copolymer of α, β-ethylenically unsaturated monomer comprising; (1) 5-50% by weight of monomer (a), which is monomer having a chain-like molecular structure with a chain-length of at least 80 covalently bonded atoms and which is soluble in poly(ethylene oxide) of molecular weight 400, (2) 25-95% by weight of monomer (b), which is insoluble in poly(ethylene oxide) of molecular weight 400 and has the structure ##STR4## wherein R 1 is H or CH 3 and R 2 is a chain-like moiety of chain length at least 10 covalently bonded atoms, (3) monomer (a) plus monomer (b) to the extent of at least 60% by weight of the total unsaturated monomer, and (4) monomer (a) and monomer (b) in the ratio by weight of from 1:19 to and including 1:1; and further characterised in that the said amphipathic random copolymer forms a self-stabilising dispersion in poly(ethylene oxide) of molecular weight 400.
Claim 9
Dependent Claim
91 words
A film on a solid substrate of a polar liquid coating composition according to claim 6, characterised in that the polar liquid coating composition is selected from the group consisting of (a) solutions of at least one at least bifunctional ester which contain as functional groups predominantly hydroxyl groups and optionally carboxyl groups, the ester or esters having an average molecular weight of less than 600, (b) solutions of unsaturated polyester resins in α, β-ethylenically unsaturated monomers, (c) dispersions in water of particles of film-forming polymers and (d) liquefied powder coatings.
Claim 10
Dependent Claim
64 words
A film on a solid substrate of a polar liquid coating composition according to claim 6, characterised in that monomer (a) is one or more monomers selected from the group consisting of methoxy poly(ethylene oxide) acrylate, methoxy poly(ethylene oxide) methacrylate, and the reaction product of a copolymer of methyl methacrylate, hydroxypropyl methacrylate and methacrylic acid in the weight proportions of 79:20:1 with glycidyl methacrylate.
Claim 11
Dependent Claim
55 words
A film on a solid substrate of a polar liquid coating composition according to claim 6, characterised in that monomer (b) is one or more monomers selected from the group consisting of the esters of acrylic and methacrylic acid with lauryl, stearyl and tridecyl alcohols and the methacryl ester of a self-polyester of 12-hydroxystearic acid.
Claim 12
Dependent Claim
30 words
A film on a solid substrate of a polar liquid coating composition according to claim 6, characterised in that a portion of the total unsaturated monomer comprises chemically reactive groups.
References Cited (Backward Citations)
US2884339A
Cited
US3244655A
Cited
GB1167524A
Cited
US3661827A
Cited
GB1345907A
Cited
US3719647A
Cited
GB1371755A
Cited
US4008202A
Cited
US4002703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |