US3609110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for electrophoretic deposition
Assignee: Kansai Paint Co Ltd
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Filing: 1967-11-06
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Granted: 1971-09-28
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Expires: 1987-11-06
Abstract
Abstract In a coating composition adapted for electrophoretic deposition containing an aqueous medium and a resinous binder dispersed therein, the improvement comprising the resinous binder being a modified polybutadiene glycol prepared by reacting a polybutadiene glycol having hydroxyl group at both ends of the polymer main chain and a number average molecular weight of 200 to 10,000 with acid anhydride to produce a half ester of the polybutadiene glycol and neutralizing the resultant half ester with a base to turn it water dispersible.
Inventors
- 👤 Ju Kumanotani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:35
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4403; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/38; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
25 words
The coating composition of claim 1, in which said composition contains the modified butadiene polymer glycol in a concentration of 30 to 60 weight percent.
Claim 2
Dependent Claim
18 words
The coating composition of claim 1, in which said composition has a pH value of 7.0 to 8.5.
Claim 3
Dependent Claim
20 words
The coating composition of claim 1, in which said butadiene polymer glycol has a molecular weight of 800 to 5,000.
Claim 4
Dependent Claim
16 words
The coating composition of claim 1, in which said butadiene polymer glycol is polybutadiene homopolymer glycol.
Claim 5
Dependent Claim
42 words
The coating composition of claim 1 in which said butadiene polymer is selected from the group consisting of homopolymers of butadiene and copolymers of at least 70 weight percent butadiene with up to 30 weight percent of an ethylenically unsaturated copolymerizable monomer.
Claim 6
Dependent Claim
30 words
The coating composition of claim 5 wherein said butadiene polymer is a homopolymer selected from the group consisting of 1, 2-butadiene homopolymer, 1,4-butadiene homopolymer and 1,2- and 1,4-random butadiene homopolymer.
Claim 7
Dependent Claim
25 words
The coating composition according to claim 6 wherein said copolymerizable monomer is selected from the group consisting of isoprene, chloroprene, styrene, methyl methacrylate and acrylonitrile.
Claim 8
Dependent Claim
30 words
The coating composition according to claim 1 wherein said acid anhydride is selected from the group consisting of aliphatic and aromatic carboxylic acids having from 4 to 18 carbon atoms.
Claim 9
Dependent Claim
133 words
In a bath composition adapted for electrophoretic deposition containing aqueous medium and a resinous binder and a pigment dispersed in the aqueous medium, the improvement wherein the resinous binder comprises a modified butadiene polymer glycol prepared by reacting a butadiene polymer glycol having a hydroxyl group at both ends of the polymer main chain and a number average molecular weight of 200 to 10,000 with acid anhydride selected from the group consistIng of maleic anhydride, phthalic anhydride, 3-chlorophthalic anhydride, 4-chlorophthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, endo-cis-bicyclo (2,2,1)-5-heptene-2,3-dicarboxylic acid anhydride, trimellitic acid anhydride, succinic acid anhydride, and dodecenyl succinic acid anhydride, to produce a half ester of the butadiene polymer glycol and neutralizing the resultant ester with a base to render it water dispersible, said butadiene polymer having hydroxyl groups at terminal positions only.
Claim 10
Dependent Claim
24 words
The bath composition of claim 10, in which the solid content of the composition is in the range of 5 to 30 weight percent.
Claim 11
Dependent Claim
23 words
The bath composition of claim 10, in which the pigment to binder ratio by weight is in the range of 1:1 to 1:5.
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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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |