EP0411576A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cationically electrodepositable finely divided gelled polymer and process for producing same
Assignee: Kansai Paint Co Ltd
•
Filing: 1990-07-31
•
Granted: —
•
Expires: 2010-07-31
Abstract
Abstract A cationically electrodepositable finely divided gelled polymer obtained by, in the first step, emulsion polymerizing (A) a monomer component comprising (a) a polymerizable unsaturated vinylsilane monomer containing a vinylic double bond and a hydrolyzable alkoxysilane group, (b) a polymerizable monomer having at least two radically polymerizable unsaturated groups in a molecule, (c) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (d) the other polymerizable unsaturated monomer using a cationically reactive emulsifying agent having an allyl group in a molecule; and in the second step, emulsion polymerizing a monomer component (B) comprising (e) a blocked monoisocyanate or polyisocyanate in which at least one isocyanate group in a molecule is blocked with a radically polymerizable monohydroxy compound, (f) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (g) the other polymerizable unsaturated monomer in the presence of an aqueous finely divided gelled polymer obtained in the first step, said polymer having a core-sheath structure in which the polymerized product of the monomer component (A) is a core and the polymerized product of the monomer component (B) is a sheath, and process for producing same.
Inventors
- 👤 Kenji Yamamoto
- 👤 Haruo Nagaoka
- 👤 Teiji Katayama
- 👤 Tadayoshi Hiraki
- 👤 Kiyoshi Kato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 01:07
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4488; C09D5/4492; C08; C08F; C08F275/00; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
188 words
A cationically electrodepositable finely divided gelled polymer obtained by, in the first step, emulsion polymerizing (A) a monomer component comprising (a) a polymerizable unsaturated vinylsilane monomer containing a vinylic double bond and a hydrolyzable alkoxysilane group, (b) a polymerizable monomer having at least two radically polymerizable unsaturated groups in a molecule, (c) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (d) the other polymerizable unsaturated monomer using a cationically reactive emulsifying agent having an allyl group in a molecule; and in the second step, emulsion polymerizing a monomer component (B) comprising (e) a blocked monoisocyanate or polyisocyanate in which at least one isocyanate group in a molecule is blocked with a radically polymerizable monohydroxy compound, (f) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (g) the other polymerizable unsaturated monomer in the presence of an aqueous finely divided gelled polymer obtained in the first step, said polymer having a core-sheath structure in which the polymerized product of the monomer component (A) is a core and the polymerized product of the monomer component (B) is a sheath.
Claim 2
Dependent Claim
188 words
A cationically electrodepositable finely divided gelled polymer obtained by, in the first step, emulsion polymerizing (A) a monomer component comprising (a) a polymerizable unsaturated vinylsilane monomer containing a vinylic double bond and a hydrolyzable alkoxysilane group, (b) a polymerizable monomer having at least two radically polymerizable unsaturated groups in a molecule, (c) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (d) the other polymerizable unsaturated monomer using a cationically reactive emulsifying agent having an allyl group in a molecule; and in the second step, emulsion polymerizing a monomer component (B) comprising (e) a blocked monoisocyanate or polyisocyanate in which at least one isocyanate group in a molecule is blocked with a radically polymerizable monohydroxy compound, (f) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (g) the other polymerizable unsaturated monomer in the presence of an aqueous finely divided gelled polymer obtained in the first step, said polymer having a core-sheath structure in which the polymerized product of the monomer component (A) is a core and the polymerized product of the monomer component (B) is a sheath.
Claim 3
Dependent Claim
54 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (a) is a compound represented by formula (R) 3 SiQ wherein Q denotes a polymerizable unsaturated group such as gamma-methacryloxypropyl group or a vinyl group, and R denotes an acetoxy group or an alkoxy group having 1 to 8 carbon atoms.
Claim 4
Dependent Claim
27 words
The cationically electrodepositable finely divided gelled polymer of claim 2 wherein the monomer (a) is at least one type selected from vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(2-methoxyethoxy)silane, gamma-methacryloxypropyltrimethoxysilane and vinyltriacetoxysilane.
Claim 5
Dependent Claim
69 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (b) is at least one type selected from a polymerizable unsaturated monocarboxylic acid ester of a polyhydric alcohol, a polymerizable unsaturated alcohol ester of a polybasic acid, an aromatic compound substituted with two or more vinyl groups and a blocked polyisocyanate in which at least two isocyanate groups are blocked with a radically polymerizable monohydroxy compound.
Claim 6
Dependent Claim
26 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (c) is at least one type selected from 2-hydroxyethyl (meth)acrylate and hydroxypropyl (meth)acrylate.
Claim 7
Dependent Claim
35 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (d) is at least one type selected from an alkyl (meth)acrylate monomer, a polymerizable unsaturated nitrile monomer and a vinyl aromatic monomer.
Claim 8
Dependent Claim
29 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (e) is a blocked monoisocyanate in which the monoisocyanate is blocked with a polymerizable monohydroxy compound.
Claim 9
Dependent Claim
35 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (e) is a blocked polyisocyanate in which at least one isocyanate group of the polyisocyanate is blocked with a polymerizable monohydroxy compound.
Claim 10
Dependent Claim
26 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (f) is at least one type selected from 2-hydroxyethyl (meth)acrylate and hydroxypropyl (meth)acrylate.
Claim 11
Dependent Claim
36 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (g) is at least one type selected from an alkyl (meth)acrylate monomer, a polymerizable unsaturated nitrile monomer and a polymerizable vinyl aromatic monomer.
Claim 12
Dependent Claim
53 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer component (A) comprises the monomer (a) 0.5 to 10 % by weight, the monomer (b) 1 to 50 % by weight, the monomer (c) 1 to 30 % by weight, and the monomer (d) 10 to 97.5 % by weight.
Claim 13
Dependent Claim
44 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer component (B) comprises the monomer (e) 10 to 40 % by weight, the monomer (f) 1 to 30 % by weight, and the monomer (g) 30 to 89 % by weight.
Claim 14
Dependent Claim
49 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer (g) is at least one type selected from (g-1) a polymerizable unsaturated monomer containing an amino group in a molecule, and (g-2) an alkyl (meth)acrylate monomer, a polymerizable unsaturated nitrile monomer and a vinyl aromatic monomer.
Claim 15
Dependent Claim
77 words
The cationically electrodepositable finely divided gelled polymer of claim 13 wherein the monomer (g-1) is at least one type selected from compounds represented by formulas (I) and (II), wherein R 1 denotes a hydrogen atom or a methyl group, R 2 and R 3 , independently from each other, denote a hydrogen atom or a lower alkyl group, R4. denotes a hydrogen atom or a lower alkyl group, and n is an integer of 2 to 8.
Claim 16
Dependent Claim
54 words
The cationically electrodepositable finely divided gelled polymer of claim 13 in which the monomer component (B) comprises the monomer (e) 10 to 40 % by weight, the monomer (f) 1 to 30 % by weight, the monomer (g-1) 1 to 10 % by weight, and the monomer (g-2) 20 to 88 % by weight.
Claim 17
Dependent Claim
28 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the monomer component (A)/ monomer component (B) weight ratio is within the range of 10/90 to 90/10.
Claim 18
Dependent Claim
45 words
The cationically electrodepositable finely divided gelled polymer of claim 1 wherein the amount of the allyl group-containing cationic reactive emulsifying agent is 0.1 to 30 % by weight per 100 parts by weight of the solids content of the cationically electrodepositable finely divided gelled polymer.
Claim 19
Dependent Claim
175 words
A process for producing a cationically electrodepositable finely divided gelled polymer which comprises, in the first step, emulsion polymerizing (A) a monomer component comprising (a) a polymerizable unsaturated vinylsilane monomer containing a vinylic double bond and a hydrolyzable alkoxysilane group, (b) a polymerizable monomer having at least two radically polymerizable unsaturated groups in a molecule, (c) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (d) the other polymerizable unsaturated monomer using a cationic reactive emulsifying agent having an allyl group in a molecule; and in the second step, emulsion polymerizing a monomer component (B) comprising (e) a blocked monoisocyanate or polyisocyanate in which at least one isocyanate group in a molecule is blocked with a radically polymerizable monohydroxy compound, (f) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (g) the other polymerizable unsaturated monomer in the presence of an aqueous finely divided gelled polymer obtained in the first step, a water-soluble azoamide compound being used as a polymerization initiator in the emulsion polymerization.
Claim 20
Dependent Claim
175 words
A process for producing a cationically electrodepositable finely divided gelled polymer which comprises, in the first step, emulsion polymerizing (A) a monomer component comprising (a) a polymerizable unsaturated vinylsilane monomer containing a vinylic double bond and a hydrolyzable alkoxysilane group, (b) a polymerizable monomer having at least two radically polymerizable unsaturated groups in a molecule, (c) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (d) the other polymerizable unsaturated monomer using a cationic reactive emulsifying agent having an allyl group in a molecule; and in the second step, emulsion polymerizing a monomer component (B) comprising (e) a blocked monoisocyanate or polyisocyanate in which at least one isocyanate group in a molecule is blocked with a radically polymerizable monohydroxy compound, (f) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (g) the other polymerizable unsaturated monomer in the presence of an aqueous finely divided gelled polymer obtained in the first step, a water-soluble azoamide compound being used as a polymerization initiator in the emulsion polymerization.
Claim 21
Dependent Claim
100 words
The process of claim 18 wherein the water-soluble azoamide compound is a compound represented by formula wherein X denotes a linear or branched alkylene group, or wherein at least one of X 1 , X 2 and X 3 denotes a hydroxyl group and the others denote hydrogens. 20. The process of claim 18 wherein the amount of the water-soluble azoamide compound is 0.1 to 1.5 parts by weight per 100 parts by weight of the solids content of the cationically electrodepositable finely divided gelled polymer. 21. A cationically electrodepositable paint containing the finely divided gelled polymer of claim 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.