US 12,240,941 B2
Rosin-based polymer for stain-blocking coating compositions
Gamini Samaranayake, Cleveland, OH (US)
Assigned to SWIMC LLC, Cleveland, OH (US)
Filed by SWIMC LLC, Cleveland, OH (US)
Filed on May 2, 2024, as Appl. No. 18/653,363.
Application 18/653,363 is a continuation of application No. PCT/US2022/049289, filed on Nov. 8, 2022.
Claims priority of provisional application 63/277,923, filed on Nov. 10, 2021.
Prior Publication US 2024/0294702 A1, Sep. 5, 2024
Int. Cl. C09D 167/08 (2006.01); C08G 59/42 (2006.01); C08L 67/08 (2006.01); C09D 5/00 (2006.01); C09D 5/02 (2006.01); C09D 7/65 (2018.01); C08G 59/18 (2006.01)
CPC C08G 59/4215 (2013.01) [C09D 5/002 (2013.01); C09D 5/027 (2013.01); C09D 7/65 (2018.01); C08G 2150/00 (2013.01)] 28 Claims
 
1. An optionally neutralized acid-functional polyester polymer for providing a stain-blocking coating composition, the optionally neutralized acid-functional polyester polymer obtained from reactants including (i) an epoxidized ester of glycerol and a C10 to C30 fatty acid having multiple epoxide groups, (ii) an acid-functional terpenoid compound having two or more carboxylic acid functional groups, and (iii) a capping reactant;
wherein reactant (iii) is selected from an epoxidized ester of a C10 to C30 fatty acid having one epoxide group or an epoxidized ester of formula Va

OG Complex Work Unit Chemistry
wherein R4 is a C1 to C4 alkyl group, each R5 is independently a C1 to C20 hydrocarbyl group, and n is an integer from 0 to 4 such that the epoxidized ester has up to 30 total carbons in the ester moiety and an average epoxide number of about 1 to about 3;
wherein reactants (i) and (ii) are polymerized, and then capped with reactant (iii); and
wherein at least a portion of the acid-functional groups of the polyester polymer are optionally neutralized with a base.