Phloroglucinolic resins, methods of making, and uses in rubber compositions

Abstract

A solid phloroglucinolic resin comprises reacting a phloroglucinolic compound and a ketone in the presence of an acid catalyst. The solid phloroglucinolic resin formed includes multiple phloroglucinolic units defined by formula (I) wherein at least one of R1, R2, and R3 combines with a second phloroglucinolic unit to form a di-substituted methylene bridge, wherein the second one of R1, R2, and R3 is a hydrogen atom or combines with a third phloroglucinolic unit to form another di-substituted methylene bridge, and wherein the third one of R1, R2 and R3 is a hydrogen atom.

Dependencies are inferred from the claim text.