The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
Feb. 13, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Yongshang Lu, Woodbury, MN (US);
Encai Hao, Woodbury, MN (US);
Jianhui Xia, Wodbury, MN (US);
Lili Qie, Woodbury, MN (US);
David T. Amos, St. Paul, MN (US);
Charlie Chia-Tie Ho, Woodbury, MN (US);
Lauren A. Polski, Woodbury, MN (US);
Richard B. Ross, Cottage Grove, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
There is provided a pressure sensitive adhesive composition comprising a polyurethane polymer that comprises the reaction product of a polyisocyanate component and a polyol component. The polyol component has a hydrophilic-lipophilic balance (HLB) less than 10. The polyurethane further comprises 0.5 to 10 wt.-% of hydrophilic polymerized units having an HLB greater than 12, such as a reaction product of a polyethylene glycol polymer. In another embodiment, the polyurethane further comprises pendent ethylenically unsaturated groups. Also described are articles such as laminating tapes and protective films as well as methods of bonding substrates with the pressure sensitive adhesive and laminating tape.