公开(公告)号：US09718987B2

公开(公告)日：2017-08-01

申请号：US15160544

申请日：2016-05-20

Applicant: NDSU RESEARCH FOUNDATION

Inventor： Dean C. Webster ,  Erin Pavlacky ,  Curtiss Kovash, Jr.

IPC: C08G63/02 ,  C09D163/08 ,  C08F222/02 ,  C07C69/34 ,  C07C69/40 ,  C07C69/42 ,  C07C69/44 ,  C07C69/46 ,  C07C69/48 ,  C07C69/50 ,  C07C69/704 ,  C07D307/68 ,  C08F216/12

CPC classification number: C09D163/08 ,  C07C69/34 ,  C07C69/40 ,  C07C69/42 ,  C07C69/44 ,  C07C69/46 ,  C07C69/48 ,  C07C69/50 ,  C07C69/704 ,  C07D307/68 ,  C08F216/12 ,  C08F222/02

Abstract: This invention relates to bio-based polyfunctional carboxylic acids reacted with vinyl ether compounds to form liquid vinyl-blocked bio-based polyfunctional carboxylic acids. These liquid vinyl-blocked bio-based polyfunctional carboxylic acids can be mixed with a polyfunctional vegetable oil-based epoxy resin to form a homogeneous curable coating composition. Upon curing at elevated temperature, thermoset coatings are formed which have excellent hardness, solvent resistance, adhesion, and flexibility. The invention also relates to the use of a curable coating composition comprising at least one polyfunctional vegetable oil-based epoxy resin and at least one vinyl-blocked bio-based polyfunctional carboxylic acid, which may be coated onto a substrate and cured thermally. Methods of making the vinyl-blocked bio-based polyfunctional carboxylic acids and curable coating compositions and substrates containing the same are also disclosed.