PRESSURE-SENSITIVE ADHESIVE COMPOSITION

摘要

Disclosed is an adhesive composition comprising a low Tg (meth)acrylate copolymer component, a high Tg (meth)acrylate copolymer component, and a hydrogenated hydrocarbon tackifier. This disclosure provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles that are particularly useful in the bonding of low surface energy (LSE) substrates.

主权项

1. An adhesive composition comprising:
a) 60 parts by weight or greater of a low Tg (meth)acrylate copolymer component comprising
i. C1-C18(meth)acrylic acid ester monomer units;ii. acid functional ethylenically unsaturated monomer units;iii. optionally non-acid functional, ethylenically unsaturated polar monomer units;iv. optionally vinyl monomer units; andv. optionally a multifunctional (meth)acrylate, and b) up to 40 parts by weight of a high Tg acrylate copolymer having a Mw>20 k comprising:
i. high Tg (meth)acrylic acid ester monomer units;ii) optional acid functional ethylenically unsaturated monomer units;iii) optional low Tg (meth)acrylic acid ester monomer units;iv) optional non-acid functional, ethylenically unsaturated polar monomer units;v) optional vinyl monomer units; and c) 0.1 to 20 parts be weight of a hydrogenated hydrocarbon tackifier, based on 100 parts by weight of a), and b).