Abstract A non-aqueous dispersion of polymer particles is formed by polymerizing at least one ethylenically unsaturated monomer in a dispersing liquid in the presence of a polymerizable ethylenically unsaturated carboxylic acid, an imine, and a dispersion stabilizer which is a branched copolymer having two types of polymeric components of which one type is solvated by the dispersing liquid and the other type is an anchor polymer of different polarity to the first type and being relatively nonsolvatable by the dispersing liquid and being capable of being anchored to the polymerized particles of the ethylenically unsaturated monomer and said anchor polymer containing pendant groups capable of copolymerizing with ethylenically unsaturated monomers. The resulting dispersion is stable where large amounts of active or coalescing solvents are added and a coating formed from the dispersion has excellent adhesion to many substrates.
The dispersion of claim 1 wherein compound (a) is methyl methacrylate.
Claim 2
Dependent Claim
11 words
The dispersion of claim 1 wherein compound (b) is methacrylic acid.
Claim 3
Dependent Claim
13 words
The dispersion of claim 1 wherein compound (c) is 2-hydroxy ethyl ethylene imine.
Claim 4
Dependent Claim
15 words
The dispersion of claim 1 wherein compound (d) is a blend of aliphatic hydrocarbon solvents.
Claim 5
Dependent Claim
110 words
A process for producing a dispersion of polymer in a dispersing liquid of aliphatic hydrocarbon having a boiling range of about 30* C. to about 300* C. in which the polymer is insoluble which comprises polymerizing at least one ethylenically unsaturated monomer in from about 30 percent to about 70 percent by weight based on the entire dispersion of said dispersing liquid in the presence of from about 0.2 percent to about 6 percent by weight based on the ethylenically unsaturated monomer of a polymerizable ethylenically unsaturated acid from about 0.2 percent to about 6 percent by weight based on the ethylenically unsaturated monomer of an imine having the formula:
Claim 6
Dependent Claim
14 words
The method of claim 6 wherein the dispersed polymer formed is poly methyl methacrylate.
Claim 7
Dependent Claim
14 words
The method of claim 6 wherein the ethylenically unsaturated carboxylic acid is methacrylic acid.
Claim 8
Dependent Claim
13 words
The method of claim 6 wherein the imine is 2-hydroxy ethyl ethylene imine.
Claim 9
Dependent Claim
48 words
The method of claim 6 wherein the dispersion stabilizer is formed by graft copolymerizing (A) the reaction product of glycidyl methacrylate and poly-12-hydroxy stearic acid and (B) the reaction product of methyl methacrylate, glycidyl methacrylate and the copolymer product containing pendant epoxy groups is reacted with methacrylic acid.