公开(公告)号：US20190263972A1

公开(公告)日：2019-08-29

申请号：US16345809

申请日：2017-10-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： HANNAH C. COHEN ,  AMANDA C. ENGLER ,  RAN JAN I V. PARTHASARATHY ,  HAOMING RONG ,  RAMESH C. KUMAR ,  MATTHEW T. SCHOLZ ,  JAMES P. DIZIO ,  AUDREY A. SHERMAN ,  RICHARD G. HANSEN ,  DOUGLAS A. HANGGI ,  DALE J. CASE ,  DAVID D. JOHNSON

IPC: C08G77/458 ,  C08G77/46 ,  C08K5/00

Abstract: A copolymer composition that includes a silicone copolymer, methods of making the composition, and articles that include the composition, wherein the copolymer composition includes a silicone copolymer having a backbone composition that includes: silicone segments in an amount of 5 wt-% to 40 wt-%, based on the total weight of the silicone copolymer; hydrophilic segments in an amount of 40 wt-% to 75 wt-%, based on the total weight of the silicone copolymer; and reinforcing segments in an amount of 5 wt-% to 30 wt-%, based on the total weight of the silicone copolymer, wherein the reinforcing segments are derived from the reaction of one or more chain extenders with one or more multi-functional isocyanates, multi-functional carboxylic acids, multi-functional anhydrides, multi-functional esters, and/or multi-functional acid halides; wherein the silicone segments, hydrophilic segments, and reinforcing segments are connected through urea, urethane, amide, and/or oxamide linkages; wherein the hydrophilic segments and the reinforcing segments are present in a weight ratio of 1.8:1 to 8:1; and the hydrophilic segments and the silicone segments are present in a weight ratio of 1.3:1 to 4.5:1.

公开(公告)号：US20190016935A1

公开(公告)日：2019-01-17

申请号：US16066786

申请日：2016-12-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： DAVID S. HAYS ,  RICHARD G. HANSEN ,  JAMES P. DiZIO ,  DANIEL A. LUEDTKE ,  JOAN M. NOYOLA ,  SCOTT M. TAPIO

IPC: C09J183/08 ,  C09J7/38 ,  C09J7/26

Abstract: Adhesive composition including an elastomeric silicone-based copolymer selected from the group consisting of urea-based silicone copolymers, oxamide-based silicone copolymers, amide-based silicone copolymers, urethane-based silicone copolymers and mixtures thereof; and greater than 0% by weight and no more than 20% by weight of MQ resin. In certain embodiments, the adhesive compositions includes less than 10% by weight of MQ resin. In some illustrative embodiments, the adhesive composition is a pressure-sensitive adhesive. In certain illustrative embodiments, the pressure sensitive adhesive is optically clear, self-wetting to the end-use substrate, and stretch releasable. In certain such embodiments, the adhesive article exhibits a 180° PEEL ADHESION to a glass substrate no greater than about 500 N/dm after aging for seven days at 85° C. The pressure sensitive adhesive compositions may be used to form adhesive articles and adhesive assemblies.