US4839414A
Expired / Lapsed
US
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Pigment dispersion and its use
Assignee: Axalta Coating Systems Germany GmbH and Co KG
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Filing: 1987-08-18
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Granted: 1989-06-13
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Expires: 2007-08-18
Abstract
Abstract A pigment dispersion and its use for the preparation of coating compounds are described. The dispersion contains a pigment, solvent and pigment dispersing agent. The pigment dispersing agent is a copolymer containing OH groups, obtainable by the reaction of: (A) 80 to 95% by weight of a copolymer of: (a) 0.5 to 40% by weight of N,N-di-Cl to 4-alkylamino-C 1 to 8 -alkyl(meth)acrylamides and/or a mixture of N,N-di-C to 4-alkylamino-C 1 to 8 -alkyl(meth)acrylates and N-substituted (meth)acrylamides and/or (meth)acrylamide in which the ratio of amino(meth)acrylates to amido(meth)acrylates should be in the range of from 1:2 to 2:1, (b) 10 to 40% by weight of hydroxy-C 2-8 -alkyl (meth)acrylates and (c) 20 to 89.5% by weight of copolymerizable, α, β-olefinically unsaturated compounds with (B) 5 to 20% by weight of a polyisocyanate containing unmasked and optionally also masked isocyanate groups as well as biuret, urethane or isocyanurate groups.
Inventors
- 👤 Klaus Bederke
- 👤 Thomas Brock
- 👤 Hermann Kerber
- 👤 Paul Rupieper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:37
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/6266; C09; C09B; C09B67/00; C09B67/006; C09B67/0066; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/009; C09D; C09D17/00; C09K; C09K23/00; C09K23/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
179 words
A pigment dispersion composition suitable for the preparation of coating compounds and containing at least one pigment and an organic solvent and a pigment dispersing agent, said pigment dispersing agent comprising a copolymer containing OH groups and having a hydroxyl number of at least 60, and ethylenically unsaturated monomers incorporated by polymerization, characterized in that the copolymer is obtainable by the reaction of: (A) 80 to 95% by weight of a copolymer of: (a) 0.5 to 40% by weight of N,N-di-C 1 to C 4 -alhylamino-C 1 to C 8 -alkyl(meth)acrylamides and/or a mixture of N,N-di-C 1 to C 4 -alkylamino-C 1 to C 8 -alkyl(meth)acrylates and N- substituted (meth)acrylamides and/or (meth)acrylamide in which the ratio of amino(meth)acrylates to amido(meth)acrylates are in the range of from 1:2 to 2:1, (b) 10 to 40% by weight of hydroxy-C 2 -C 8 -alkyl (meth)acrylates and (c) 20 to 89.5% by weight of copolymerizable, α,β-olefinically unsaturated compounds with (B) 5 to 20% by weight of polyisocyanate containing unmasked and optionally also masked isocyanate groups as well as biuret, urethane or isocyanurate groups.
Claim 2
Dependent Claim
179 words
A pigment dispersion composition suitable for the preparation of coating compounds and containing at least one pigment and an organic solvent and a pigment dispersing agent, said pigment dispersing agent comprising a copolymer containing OH groups and having a hydroxyl number of at least 60, and ethylenically unsaturated monomers incorporated by polymerization, characterized in that the copolymer is obtainable by the reaction of: (A) 80 to 95% by weight of a copolymer of: (a) 0.5 to 40% by weight of N,N-di-C 1 to C 4 -alhylamino-C 1 to C 8 -alkyl(meth)acrylamides and/or a mixture of N,N-di-C 1 to C 4 -alkylamino-C 1 to C 8 -alkyl(meth)acrylates and N- substituted (meth)acrylamides and/or (meth)acrylamide in which the ratio of amino(meth)acrylates to amido(meth)acrylates are in the range of from 1:2 to 2:1, (b) 10 to 40% by weight of hydroxy-C 2 -C 8 -alkyl (meth)acrylates and (c) 20 to 89.5% by weight of copolymerizable, α,β-olefinically unsaturated compounds with (B) 5 to 20% by weight of polyisocyanate containing unmasked and optionally also masked isocyanate groups as well as biuret, urethane or isocyanurate groups.
Claim 3
Dependent Claim
15 words
A pigment dispersion according to claim 1, characterized in that it also contains a binder.
Claim 4
Dependent Claim
18 words
Coating compositions comprising the pigment dispersion composition of claim 1, a binder and an organic and/or aqueous carrier.
Claim 5
Dependent Claim
16 words
A coating composition comprising the pigment dispersion composition of claim 1 and an acrylate resin binder.
Claim 6
Dependent Claim
22 words
A pigment dispersion composition according to claim 1 wherein the copolymer has a hydroxyl number of from about 80 to about 150.
Claim 7
Dependent Claim
24 words
A pigment dispersion composition according to claim 1 wherein the ratio of amino(meth)acrylates to amido(meth) acrylates are in the range of 1:1.1 to 1.1:1.
Claim 8
Dependent Claim
27 words
A pigment dispersion composition according to claim 1 wherein the ratios of the components (a):(b) and :(c) are within the ranges of 12-20; 30-40 and 30-60 respectively.
Claim 9
Dependent Claim
29 words
A pigment dispersion composition according to claim 1 wherein the copolymers of A and B have calculated glass transition temperatures of from about -20° C. to about 75° C.
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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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |