ADHESIVES, GLUING WHILE PRESSING ON THE BASIS OF VEGETABLE OIL Russian patent published in 2017 - IPC C09J163/00 C09J191/00 C09J7/02 

FIELD: chemistry.

SUBSTANCE: one embodiment is a pressure-sensitive bonding system, comprising: (a) a substrate; and (b) a pressure-sensitive composition on the substrate, wherein the pressure-sensitive composition includes a product obtained from (i) at least one epoxidized vegetable oil; and (ii) an acid dimer or an anhydride thereof, an acid trimer or an anhydride thereof, a polymerized fatty acid or an anhydride thereof, or a mixture thereof. Another embodiment is a pressure-sensitive bonding system, comprising: (A) a substrate; And (B) a pressure-sensitive adhesive composition on a substrate, wherein the pressure-sensitive composition includes a product obtained by reaction of (i) at least one epoxidized vegetable oil; and (ii) a prepolymer or oligomer capped with a carboxy group at either end of the prepolymer or oligomer chain, or a branched prepolymer or oligomer with at least two branches of the prepolymer or oligomer and the ends of the prepolymer or oligomer chains capped with a carboxy group, wherein the carboxylated prepolymer or oligomer is derived from (A) an excess of a dibasic acid reacted with (b) an acidyl or an epoxidized compound containing.

EFFECT: ensuring a balance between sufficient cohesive strength, good initial tack and adhesion.

51 cl, 1 tbl, 1 dwg, 10 ex