trimellitictype
Trimellitictype, sometimes referred to as trimellitic type, is a term encountered in polymer chemistry to describe polymers and resins that incorporate trimellitic acid or its anhydride as structural or crosslinking units. The exact usage of the term varies between sources, and it is not a formal IUPAC category. In practice, trimellitictype materials derive from trimellitic anhydride (or trimellitic acid), which provides three reactive carboxylate functionalities on a benzene ring, enabling multivalent crosslinking.
Chemistry and formation. In polyester chemistry, trimellitic anhydride can react with diols to form branched or
Properties and performance. Trimellitictype materials typically exhibit good thermal stability, dimensional rigidity, and chemical resistance. Their
Applications. These materials appear in high-performance coatings, insulating resins, and advanced composites where crosslinking density and
Terminology note. The label trimellitictype is not standardized and may be used inconsistently across literature. When