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US 7,923,474 B2Granted
Amine dispersants, organic dispersions and related coating compositions
AssigneePPG Industries Ohio, Inc.
InventorsLeland H. Carlblom, Terri L. Ziegler, Stephen G. McQuown
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Abstract
Amine dispersants are disclosed. Also disclosed are organic dispersions that comprise ultrafine particles and an amine dispersant. The amine dispersant is the Michael addition product of reactants that include (a) a polyether (meth)acrylate and (b) a polyamine. Also disclosed are coating compositions that comprise such dispersions and substrates at least partially coated with such coating compositions.
Claims16
An organic dispersion comprising:
- (a) a continuous phase comprising an organic medium;
- and
- (b) a dispersed phase comprising:
- (i) ultrafine particles;
- and
- (ii) an amine dispersant comprising the Michael addition product of reactants comprising:
- (A) a polyether (meth)acrylate and
- (B) a polyamine having a molecular weight of at least 300,
- wherein the dispersant comprises at least 15 percent polyamine.
6 more elements
An organic dispersion comprising:
- (a) a continuous phase comprising an organic medium;
- and
- (b) a dispersed phase comprising:
- (i) ultrafine particles;
- and
- (ii) an amine dispersant of the general formula Z—CH2—CHR1—COO(R2—O)nR3, wherein Z represents a moiety comprising a plurality of amino groups;
- R1 represents hydrogen or a methyl group;
- each R2, which may be the same or different, represents an alkyl group comprising from 1 to 5 carbon atoms;
- R3 is either hydrogen or a saturated or unsaturated alkyl, alkylphenyl or alkylether group;
- and n is an integer having a value of 2 to 20,
- wherein the amine dispersant is derived from a polyamine having a molecular weight of at least 300, and
- wherein the dispersant comprises at least 15 percent polyamine.
9 more elements
An organic dispersion comprising:
- (a) a continuous phase comprising an organic medium;
- and
- (b) a dispersed phase comprising:
- (i) ultrafine particles;
- and
- (ii) an amine dispersant comprising the Michael addition product of reactants comprising:
- (A) a polyether (meth)acrylate represented by the general structure
- wherein R1 is hydrogen or a methyl group;
- each R2, which can be the same or different, is a branched or linear alkyl group comprising 1 to 5 carbon atoms;
- R3 is hydrogen or a saturated or unsaturated alkyl, alkylphenyl, or alkylether group;
- and n is an integer having a value of 2 to 20, and
- (B) a polyamine having a molecular weight of at least 300,
- wherein the dispersant comprises at least 15 percent polyamine and is substantially free of polyester.
10 more elements
Dependencies are inferred from the claim text.