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US 7,189,787 B2Granted
Aqueous dispersions and coatings
AssigneeValspar Sourcing, Inc.
InventorsRobert M. O'Brien, Grant Schutte, Jeffrey Niederst, John W. Condit, Dawn S. Herko, Daniel E. Rardon
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Abstract
The present invention provides aqueous dispersions that, for example, include the reaction product of an oxirane-functional vinyl addition polymer having an oxirane functionality between 0.5 and 5; an acid-functional polymer having an acid number 30 to 500; and a tertiary amine. Also described are coating compositions containing the dispersion and methods of forming the dispersion.
Claims30
A method, comprising:
- providing an oxirane-functional vinyl addition polymer having an oxirane functionality of 0.5 to 5;
- providing an acid-functional polymer having an acid number of 30 to 500;
- reacting the oxirane-functional vinyl addition polymer and the acid-functional polymer together in the presence of a tertiary amine to form a water-dispersible polymer;
- and
- dispersing the water-dispersible polymer in a carrier comprising water.
2 more elements
A method, comprising:
- providing an oxirane-functional vinyl addition polymer having an oxirane functionality of 0.5 to 5;
- providing an acid-functional polymer having an acid number of 30 to 500;
- providing a tertiary amine;
- combining the acid-functional polymer with the tertiary amine to form a mixture and at least partially neutralize the acid-functional polymer;
- combining and recting the oxirane-functional vinyl addition polymer and the mixture to form a water-dispersible polymer;
- and
- dispersing the water-dispersible polymer in a carrier comprising water.
4 more elements
A method, comprising:
- providing an oxirane-functional vinyl addition polymer having an oxirane funcationality of 0.5 to 5 and a number average molecular weight of 2,500 to 20,000;
- wherein the oxirane-functional vinyl polymer is the reaction product of 1 to 10 wt. % oxirane-functional monomer, 0 to 60 wt. % hydroxy-functional monomer, and the balance other monomer;
- providing an acid-functional polymer having an acid number of 30 to 500 and a number average molecular weight of 2,000 to 15,000;
- wherein the acid-functional polymer is a vinyl polymer formed as the reaction product of at least 15 wt. % acid-functional monomer and the balance other monomer;
- reacting the oxirane-functional vinyl addition polymer and the acid-functional polymer together in the presence of a tertiary amine to form a water-dispersible polymer;
- and
- dispersing the water-dispersible polymer in a carrier comprising water;
- wherein the weight ratio of the oxirane-functional vinyl addition polymer to acid-functional polymer is 90:10 to 50:50 and the ratio of amine:oxirane groups is 0.8:1 to 5:1.
5 more elements
Dependencies are inferred from the claim text.