US4447580A
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US
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Resin composition, coating material comprising said resin composition and method for forming coatings
Assignee: Asahi Kasei Corp
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Filing: 1981-11-12
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Granted: 1984-05-08
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Expires: 2001-11-12
Abstract
Abstract A resin composition comprising (A) a polymer having, in the molecule, at least two groups represented by the following structural formula (I): ##STR1## wherein R 1 is isopropyl, sec-butyl, tert-butyl, a C 5-20 alkyl group, a C 3-20 cycloalkyl group, a C 5-20 alkenyl group, a C 3-20 hydroxyalkyl group, a C 5-20 alkoxyalkyl group, a C 3-20 aminoalkyl group, a C 6-20 aryl group or a C 6-20 arylalkyl group, and n is 0, 1 or 2, and (B) a polymer having an electron attractive group and an α,β-ethylenic double bond adjacent thereto. Though said composition is stable at room temperature, it is crosslinked and cured at high temperatures because the amino group of the polymer (A) adds to the double bond of the polymer (B). Accordingly, said resin composition is suitable for use as a cathodic electrocoating material.
Inventors
- 👤 Hideo Ai
- 👤 Naohiro Tsuruta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:20
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407; C09D125/00; C09D125/18; Y; Y10; Y10S; Y10S525/00; Y10S525/92; Y10S525/921; Y10S525/922; Y10S525/925
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
119 words
A resin composition comprising (A) a polymer comprising units of the structural formula (I): ##STR8## wherein R 1 represents a group selected from the class consisting of isopropyl, sec-butyl, t-butyl, a C 5-20 alkyl group, a C 3-20 cycloalkyl group, a C 5-20 alkenyl group, a C 3-20 hydroxyalkyl group, a C 5-20 alkoxyalkyl group, a C 3-20 aminoalkyl group, a C 6-20 aryl group and a C 6-20 arylalkyl group, and n represents 0, 1 or 2, and (B) a polymer having an electron attractive group and an α, β-ethylenic double bond adjacent to said electron attractive group, said composition being stable at room temperature but being crosslinkable and curable at high temperatures by the Michael addition reaction.
Claim 2
Dependent Claim
119 words
A resin composition comprising (A) a polymer comprising units of the structural formula (I): ##STR8## wherein R 1 represents a group selected from the class consisting of isopropyl, sec-butyl, t-butyl, a C 5-20 alkyl group, a C 3-20 cycloalkyl group, a C 5-20 alkenyl group, a C 3-20 hydroxyalkyl group, a C 5-20 alkoxyalkyl group, a C 3-20 aminoalkyl group, a C 6-20 aryl group and a C 6-20 arylalkyl group, and n represents 0, 1 or 2, and (B) a polymer having an electron attractive group and an α, β-ethylenic double bond adjacent to said electron attractive group, said composition being stable at room temperature but being crosslinkable and curable at high temperatures by the Michael addition reaction.
Claim 3
Dependent Claim
101 words
A resin composition according to claim 1, wherein said polymer (A) is a polymer obtained by homopolymerizing a monomer represented by the structural formula (II): ##STR9## wherein R 1 represents a group selected from the class consisting of isopropyl, sec-butyl, tert-butyl, a C 5-20 alkyl group, a C 3-20 cycloalkyl group, a C 5-20 alkenyl group, a C 3-20 hydroxyalkyl group, a C 5-20 alkoxyalkyl group, a C 3-20 aminoalkyl group, a C 6-20 aryl group and a C 6-20 arylalkyl group, and n represents 0, 1 or 2, or by copolymerizing said monomer with at least one other vinyl monomer.
Claim 4
Dependent Claim
39 words
A resin composition according to claim 2, wherein the vinyl monomer of the formula (II) is N-isopropylaminoethylstyrene, N-sec-butylaminoethylstyrene, N-tert-butylaminoethylstyrene, N-pentylaminoethylstyrene, N-hexylaminoethylstyrene, N-decylaminoethylstyrene, N-dodecylaminoethylstyrene, N-cyclohexylaminoethylstyrene, N-phenylaminoethylstyrene, N-benzylaminoethylstyrene, N-hydroxyisopropylaminoethylstyrene, N-methoxyhexylaminoethylstyrene, N-ethoxyisopropylaminoethylstyrene, N-aminoisopropylaminoethylstyrene, N-aminoisopropylaminoethylstyrene, N-isopropylaminostyrene, N-t-butylaminostyrene, N-isopropylaminomethylstyrene, N-t-butylaminomethylstyrene, N-pentylaminomethylstyrene, N-hydroxyisopropylaminomethylstyrene or N-aminobutylaminomethylstyrene.
Claim 5
Dependent Claim
21 words
A resin composition according to claim 2, wherein the vinyl monomer of the formula (II) is N-isopropylaminoethylstyrene, N-sec-butylaminoethylstyrene, N-tert-butylaminoethylstyrene or N-cyclohexylaminoethylstyrene.
Claim 6
Dependent Claim
35 words
A resin composition according to claim 3, wherein said other vinyl monomer is selected from the group consisting of unsaturated carboxylic acids, acrylic esters, methacrylic esters, α-chloroacrylic esters, α-acyloxyacrylic esters, α-alkoxyacrylic esters, and itaconic esters.
Claim 7
Dependent Claim
110 words
A resin composition according to claim 5, wherein the unsaturated carboxylic acids are acrylic, methacrylic, α-chloroacrylic, α-acyloxyacrylic, α-alkoxyacrylic and itaconic acids; the acrylic esters are methyl, ethyl, butyl, octyl, octadecyl, cyclohexyl, trimethylcyclohexyl, phenyl, amylphenyl, chloroethyl, dichloropropyl, bromopropyl, hydroxyethyl, bishydroxymethylpentyl, methoxyethyl, ethoxypropyl, glycidyl and tetrahydrofurfuryl acrylates; the methacrylic esters are ethyl, butyl, octyl, decyl, dodecyl, stearyl, cyclohexyl, phenyl, butylphenyl, naphthyl, benzyl, triphenylmethyl, chloromethyl, fluoroethyl, bromoethyl, chlorocyclohexyl, chlorophenyl, tribromophenyl, hydroxyethyl, hydroxypropyl, ethoxyethyl, methoxybutyl, glycidyl and tetrahydrofurfuryl methacrylates; the α-chloroacrylic esters are methyl, butyl, and ethoxyethyl α-chloroacrylates; the α-acyloxyacrylic esters are ethyl α-acetoxyacrylate and ethyl α-benzoyloxyacrylate; the itaconic esters are dimethyl, dibutyl, chloroethyl, and hydroxyethyl itaconates; and the α-alkoxyacrylic esters are cyclohexyl α-ethoxyacrylate.
Claim 8
Dependent Claim
30 words
A resin composition according to claim 3, wherein said other vinyl monomer is acrylic acid; methyl, butyl or 2-ethylhexyl acrylate; methacrylic acid; or methyl, butyl, 2-ethylhexyl, dimethylaminoethyl or tetrahydrofurfuryl methacrylate.
Claim 9
Dependent Claim
42 words
A resin composition according to claim 1, wherein the polymer (A) is a copolymer of methyl methacrylate, ethyl acrylate and tert-butylaminoethylstyrene, a copolymer of methyl acrylate, methyl methacrylate, and cyclohexylaminoethylstyrene or a copolymer of methyl methacrylate, methyl acrylate, 2-hydroxyethyl acrylate and N-isopropylaminoethylstyrene.
Claim 10
Dependent Claim
69 words
A resin composition according to claim 2, wherein the polymer (A) is a polymer obtained by reacting a primary amine represented by the formula (IV), R.sub.1 --NH.sub.2 (IV) wherein R 1 and n are as defined in claim 2, with a copolymer of a monomer represented by the formula (III), ##STR10## wherein n is 0, 1 or 2, or a copolymer of said monomer (III) with other vinyl monomer.
Claim 11
Dependent Claim
30 words
A resin composition according to claim 2, wherein R 1 has 3 to 8 carbon atoms and is bonded to the nitrogen atom through a secondary or tertiary carbon atom.
Claim 12
Dependent Claim
13 words
A resin composition according to claim 10, wherein n is 1 or 2.
Claim 13
Dependent Claim
35 words
A resin composition according to claim 10, wherein said other vinyl monomer is at least one member selected from the group consisting of styrene, styrene derivatives, acrylic acid, acrylic esters, methacrylic acid, and methacrylic esters.
Claim 14
Dependent Claim
19 words
A resin composition according to claim 1, wherein the electron attractive group in the polymer (B) is carbonyl group.
Claim 15
Dependent Claim
40 words
A resin composition according to claim 13, wherein the polymer (B) is a polymer obtained by a reaction between a polymer having 2 or more epoxy groups in the molecule and an unsaturated carboxylic acid having an α,β-ethylenic double bond.
Claim 16
Dependent Claim
39 words
A resin composition according to claim 1, wherein the equivalent ratio of the group represented by the structural formula (I) to the α,β-ethylenic double bond adjacent to the electron attractive group of the polymer (B) is 100:1 to 1:100.
Claim 17
Dependent Claim
39 words
A resin composition according to claim 1, wherein the equivalent ratio of the group represented by the structural formula (I) to the α,β-ethylenic double bond adjacent to the electron attractive group of the polymer (B) is 50:1 to 1:50.
Claim 18
Dependent Claim
23 words
A resin composition according to claim 1, wherein the polymer (A) and/or the polymer (B) has an alcoholic OH group in the molecule.
Claim 19
Dependent Claim
14 words
A coating material comprising the resin composition according to any one of claims 1-17.
Claim 20
Dependent Claim
15 words
A coating material according to claim 18, wherein the resin composition is dispersed in water.
Claim 21
Dependent Claim
14 words
A coating material according to claim 19, in which the dispersion contains an acid.
Claim 22
Dependent Claim
17 words
A coating material according to claim 20 which is in the form of a cathodic electrocoating material.
Claim 23
Dependent Claim
16 words
A coating material according to claim 20, wherein the pH value of the dispersion is 6.5-7.5.
References Cited (Backward Citations)
US3969300A
Cited
US3975251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |