US4294940A
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Resin composition for electrocoating
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1980-01-09
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Granted: 1981-10-13
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Expires: 2000-01-09
Abstract
Abstract A resin composition for electrocoating which comprises (I) a reaction product (G) of an epoxy compound (E), optionally an epoxy group-modifying agent (F) and a partially esterified and/or partially amidated product (D) which is obtained by partially esterifying and/or partially amidating an adduct (A) of a conjugated diene polymer with an alpha , beta -unsaturated dicarboxylic acid or its anhydride with an alcoholic hydroxy group-containing compound (B) and/or a primary or secondary monoamine (C), respectively, and (II) a completely blocked organic polyisocyanate, said mixture of the reaction product (G) and the completely blocked organic polyisocyanate being neutralized, or a neutralized product of an adduct (H) of the reaction product (G) with a partially blocked organic polyisocyanate. The resin composition is applicable to electrocoating, particularly cathodic electrocoating, and hence, is useful for electrocoating of steel products, particularly for electrocoating of automobiles.
Inventors
- 👤 Minoru Hino
- 👤 Takao Oshima
- 👤 Kazuo Hayatsu
- 👤 Michio Yamamoto
- 👤 Seimei Yasui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4403; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08G18/28; C08G18/67; C08G18/69; C08G18/694; C08G18/696; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C09D5/4419; C09D5/443; C09D5/4434; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
215 words
A resin composition for electrocoating, which comprises (I) a reaction product (G) of 100 parts by weight of an epoxy compound (E) and 5 to 200 parts by weight of a partially esterified and/or partially amidated product (D) which is obtained by partially esterifying and/or partially amidating an adduct (A) of a conjugated diene polymer having a number average molecular weight of 150 to 50,000 with an α,β-unsaturated dicarboxylic acid or its anhydride, wherein said α,β-unsaturated dicarboxylic acid or its anhydride is used in an amount such that the content of the dicarboxylic acid in the adduct (A) becomes 5 to 25% by weight based on the total weight of the adduct (A), with an alcoholic hydroxy group-containing compound (B) and/or a primary or secondary monoamine (C), respectively, said compound (B) and monoamine (C) being used in an amount such that the sum of the molar number of the compound (B) and that of the monoamine (C) becomes 0.7 to 1.2 mol per 1 mol of the α,β-unsaturated dicarboxylic acid or its anhydride, and (II) a completely blocked organic polyisocyanate in an amount of 5 to 200 parts by weight to 100 parts by weight of the reaction product (G), said mixture of the reaction product (G) and the completely blocked organic polyisocyanate being neutralized.
Claim 2
Dependent Claim
215 words
A resin composition for electrocoating, which comprises (I) a reaction product (G) of 100 parts by weight of an epoxy compound (E) and 5 to 200 parts by weight of a partially esterified and/or partially amidated product (D) which is obtained by partially esterifying and/or partially amidating an adduct (A) of a conjugated diene polymer having a number average molecular weight of 150 to 50,000 with an α,β-unsaturated dicarboxylic acid or its anhydride, wherein said α,β-unsaturated dicarboxylic acid or its anhydride is used in an amount such that the content of the dicarboxylic acid in the adduct (A) becomes 5 to 25% by weight based on the total weight of the adduct (A), with an alcoholic hydroxy group-containing compound (B) and/or a primary or secondary monoamine (C), respectively, said compound (B) and monoamine (C) being used in an amount such that the sum of the molar number of the compound (B) and that of the monoamine (C) becomes 0.7 to 1.2 mol per 1 mol of the α,β-unsaturated dicarboxylic acid or its anhydride, and (II) a completely blocked organic polyisocyanate in an amount of 5 to 200 parts by weight to 100 parts by weight of the reaction product (G), said mixture of the reaction product (G) and the completely blocked organic polyisocyanate being neutralized.
Claim 3
Dependent Claim
101 words
A resin composition according to claim 1, wherein the reaction product (G) is a product obtained by the reaction of the epoxy compound (E) and the partially esterified and/or partially amidated product (D) in the presence of an epoxy group-modifying agent (F) selected from the group consisting of a primary and secondary amine, a dicarboxylic acid, a monocarboxylic acid and a bifunctional phenolic hydroxy group-containing compound, said agent (F) being used in an amount that the active hydrogen of the epoxy group-modifying agent becomes 0.2 to 1.0 atomic equivalent per one equivalent of the epoxy group of the epoxy compound (E).
Claim 4
Dependent Claim
22 words
A resin composition according to claim 2, wherein the epoxy compound (E) is a compound having two epoxy groups in the molecule.
Claim 5
Dependent Claim
47 words
A resin composition according to claim 2, wherein the amount of the epoxy group-modifying agent (F) is in the range that the active hydrogen of the epoxy group-modifying agent becomes 0.5 to 1.0 atomic equivalent per one equivalent of the epoxy group of the epoxy compound (E).
Claim 6
Dependent Claim
31 words
A resin composition according to claim 1, wherein the mixture of the reaction product (G) and the completely blocked organic polyisocyanate before neutralization has an amine value of 10 to 150.
Claim 7
Dependent Claim
208 words
A resin composition for electrocoating which comprises a neutralized product of an adduct (H) of (I) a reaction product (G) of 100 parts by weight of an epoxy compound (E) and 5 to 200 parts by weight of a partially esterified and/or partially amidated product (D) which is obtained by partially esterifying and/or partially amidating an adduct (A) of a conjugated diene polymer having a number average molecular weight of 150 to 50,000 with an α,β-unsaturated dicarboxylic acid or its anhydride, wherein said α,β-unsaturated dicarboxylic acid or its anhydride is used in an amount such that the content of the dicarboxylic acid in the adduct (A) becomes 5 to 25% by weight based on the total weight of the adduct (A), with an alcoholic hydroxy group-containing compound (B) and/or a primary or secondary monoamine (C), respectively, said compound (B) and monoamine (C) being used in an amount such that the sum of the molar number of the compound (B) and that of the monoamine (C) becomes 0.7 to 1.2 mol per 1 mol of the α,β-unsaturated dicarboxylic acid or its anhydride, with (II) a partially blocked organic polyisocyanate in an amount of 5 to 300 parts by weight to 100 parts by weight of the reaction product (G).
Claim 8
Dependent Claim
208 words
A resin composition for electrocoating which comprises a neutralized product of an adduct (H) of (I) a reaction product (G) of 100 parts by weight of an epoxy compound (E) and 5 to 200 parts by weight of a partially esterified and/or partially amidated product (D) which is obtained by partially esterifying and/or partially amidating an adduct (A) of a conjugated diene polymer having a number average molecular weight of 150 to 50,000 with an α,β-unsaturated dicarboxylic acid or its anhydride, wherein said α,β-unsaturated dicarboxylic acid or its anhydride is used in an amount such that the content of the dicarboxylic acid in the adduct (A) becomes 5 to 25% by weight based on the total weight of the adduct (A), with an alcoholic hydroxy group-containing compound (B) and/or a primary or secondary monoamine (C), respectively, said compound (B) and monoamine (C) being used in an amount such that the sum of the molar number of the compound (B) and that of the monoamine (C) becomes 0.7 to 1.2 mol per 1 mol of the α,β-unsaturated dicarboxylic acid or its anhydride, with (II) a partially blocked organic polyisocyanate in an amount of 5 to 300 parts by weight to 100 parts by weight of the reaction product (G).
Claim 9
Dependent Claim
101 words
A resin composition according to claim 6, wherein the reaction product (G) is a product obtained by the reaction of the epoxy compound (E) and the partially esterified and/or partially amidated product (D) in the presence of an epoxy group-modifying agent (F) selected from the group consisting of a primary and secondary amine, a dicarboxylic acid, a monocarboxylic acid, and a bifunctional phenolic hydroxy group-containing compound, said agent (F) being used in an amount that the active hydrogen of the epoxy group-modifying agent becomes 0.2 to 1.0 atomic equivalent per one equivalent of the epoxy group of the epoxy compound (E).
Claim 10
Dependent Claim
22 words
A resin composition according to claim 7, wherein the epoxy compound (E) is a compound having two epoxy groups in the molecule.
Claim 11
Dependent Claim
47 words
A resin composition according to claim 7, wherein the amount of the epoxy group-modifying agent (F) is in the range that the active hydrogen of the epoxy group-modifying agent becomes 0.5 to 1.0 atomic equivalent per one equivalent of the epoxy group of the epoxy compound (E).
Claim 12
Dependent Claim
30 words
A resin composition according to claim 6, wherein the adduct (H) of the reaction product (G) with the partially blocked organic polyisocyanate has an amine value of 10 to 150.
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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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |