Ambient curable polymer

• US 7,235,603 B2
• Filed: 03/17/2004
• Issued: 06/26/2007
• Est. Priority Date: 04/07/2003
• Status: Active Grant

• Current Assignee: Rohm and Haas Company (Dow, Inc.)
• Original Assignee: Rohm and Haas Company (Dow, Inc.)
• Inventors: Chung, Chao-Jen, Madle, Thomas Glenn, Greenblatt, Gary David, Gebhard, Matthew Stewart
• Primary Examiner(s): Wu; David W.
• Assistant Examiner(s): SASTRI, SATYA B
• Application Number:
  US10/802,638
• Publication Number:
  US 20040198903A1
• Time in Patent Office: 1,196 Days
• Field of Search: 525/111.5, 525/301, 524/531, 524/800
• US Class Current: 525/111.5
• CPC Class Codes: C08F 220/14 Methyl esters , e.g. methyl (meth)acrylate
• CPC Class Codes: C08F 220/325 containing glycidyl radical, e.g. glycidyl (meth)acrylate
• CPC Class Codes: C08F 2800/20 as weight or mass percentages
• CPC Class Codes: C08F 285/00 Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
• CPC Class Codes: C08F 290/046 Polymers of unsaturated carboxylic acids or derivatives thereof
• CPC Class Codes: C08F 8/00 Chemical modification by after-treatment graft polymers, block polymers, crosslinking with unsaturated monomers or with polymers C08F251/00 - C08F299/00; of conjugated diene rubbers C08C

Abstract

An ambient curable aqueous dispersion of polymer particles containing pendant ethylenically unsaturated side chains; a method of applying to a substrate a coating composition containing the aqueous dispersion of polymer particles; and a method of making the aqueous dispersion of polymer particles are provided.

Claims

1. A method of preparing an ambient curable aqueous dispersion of polymer particles, said method comprising the steps of:

(i) preparing polymer particles having one or more stages, by;

(a) preparing a first stage polymer containing at least one epoxy group and at least one pendant ethylenically unsaturated side chain by;

(I) preparing a precursor polymer containing at least one epoxy group by the free radical addition polymerization of at least one ethylenically unsaturated monomer, and then

(II) forming at least one pendant ethylenically unsaturated side chain on said precursor polymer by reacting said at least one epoxy group on said precursor polymer with at least one co-reactive oletinic material;

(b) optionally preparing a second stage polymer comprising from 2% to 50% by weight of a copolymerized monomer having carboxylic acid functionality; and

optionally preparing a third stage polymer, said third stage polymer having no epoxy functionality, and less than 2% by weight of a copolymerized monomer having carboxylic acid functionality.

2. The method as claimed in claim 1, wherein the said aqueous dispersion further comprises a strong base catalyst is chosen from trimethylamine, triethylamine, tripropylamine, tributylamine, dilsopropylamine, dilsobutylamine, dimethylethanolamine, methyldiethanolamine, triethanolamine, benzyldimethylamine, dibenzylmethylamine, tri(dimethylaminopropyl)amine, methyldicyclohexylamine, trimethylaminopropylethanolamine, pentamethyldipropylenetriamine, bis(2,2,6,6-tetramethyl-4piperidyl) sebacate, triacetoneaminoalcohol, n-butyltriacetonediamine, and N, N-bis(2-hydroxyethyl)-triacetone diamine.