(METH)ACRYLIC ACID POLYMER CONTAINING CROSSLINKABLE FUNCTIONAL GROUP AT TERMINAL POSITION

• Main Authors: DAI, Yingkun, LU, Victor Xinya
• Format: Patent
• Language: Chinese; English; French
• Published: 15.09.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to a (meth)acrylic acid polymer containing a crosslinkable functional group at a terminal position and an application thereof, and aims at providing a (meth)acrylate copolymer containing a crosslinkable functional group at a terminal position, in which the functional group at the terminal position can be subjected to crosslinking and chain extension during curing to effectively increase the linear length of a polymer chain, so that not only the product performance can be improved, but also the initial viscosity of the polymer can be greatly reduced, and the solid content of a pressure-sensitive adhesive can be increased. The (meth)acrylic acid polymer is mainly prepared from the following components by polymerization: a) 95% to 99.9% by weight of copolymerizable monomer, comprising at least one (meth)acrylate monomer, b) 0.01% to 5% by weight of free radical initiator, comprising at least one free radical initiator containing a crosslinkable functional group, and c) 0% to 5% by w