Water-dispersible polyester blends
AssigneeEastman Kodak Company
InventorWaylon L. Jenkins
Life of this patent
Estimating the term…
Abstract
A method of preparing water-dispersed polymer blends, comprising the steps of: (i) preparing an aqueous polymerization mixture by adding to water, a sulfonate group-containing polyester or polyesteramide, one or more .alpha.,.beta.-unsaturated monomers and a polymerization initiator; and (ii) polymerizing said polymerization mixture to provide said water-dispersed polymer blend. Also disclosed is an aqueous dispersion of a polymer blend, comprising an aqueous dispersion having a solids content of about 30% to 65% of a polyester or polyesteramide blend comprising a sulfonate group-containing polyester or polyesteramide and a polymer comprising repeat units from one or more .alpha.,.beta.-unsaturated monomers.
Claims17
A method of preparing water-dispersed polymer blends, comprising the steps of:
- (i) preparing an aqueous polymerization mixture by adding to water, a water-dispersible sulfonate group-containing polyester or polyesteramide, one or more .alpha.,.beta.-unsaturated monomers and a polymerization initiator said polyester or polyesteramide consisting essentially of repeat units from
- (a) at least one difunctional aromatic, saturated aliphatic or saturated alicyclic dicarboxylic acid;
- (b) from about 4 to about 25 mole percent, based on a total of all acid, hydroxyl and amino equivalents being equal to 200 mole percent, of at least one difunctional sulfomonomer containing at least one metal sulfonate group attached to an aromatic nucleus wherein the functional groups are hydroxy, carboxyl or amino;
- and
- (c) at least one glycol or a mixture of a glycol and a diamine having two -NRH groups, the glycol containing two -CH.sub.2 -OH groups, and
- (ii) polymerizing said monomers to provide said water-dispersed polymer blend.
A composition of matter comprising:
- an aqueous dispersion having a total solids content of about 30% to 65% of a polymer blend, said blend comprising about 1 to 95 weight % of a sulfonate group-containing polyester or polyesteramide and about 99 to 5 weight % of a polymer comprising repeat units from one or more .alpha.,.beta.-unsaturated monomers said polyester or polyesteramide consisting essentially of repeat units from
- (a) at least one difunctional aromatic, saturated aliphatic or saturated alicyclic dicarboxylic acid;
- (b) from about 4 to about 25 mole percent, based on a total of all acid, hydroxyl and amino equivalents being equal to 200 mole percent, of at least one difunctional sulfomonomer containing at least one metal sulfonate group attached to an aromatic nucleus wherein the functional groups are hydroxy, carboxyl or amino;
- and
- (c) at least one glycol or a mixture of a glycol and a diamine having two -NRH groups, the glycol containing two -CH.sub.2 -OH groups.
Dependencies are inferred from the claim text.