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:
Nov. 09, 2021
Filed:
Sep. 23, 2019
Applicant:
Stepan Company, Northfield, IL (US);
Inventors:
Warren A. Kaplan, Libertyville, IL (US);
Sarah Wolek, Arlington Heights, IL (US);
Assignee:
Stepan Company, Northfield, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 175/04 (2006.01); C08G 18/42 (2006.01); C08G 18/20 (2006.01); C08G 18/32 (2006.01); C08G 18/66 (2006.01); E04D 5/14 (2006.01); C08G 18/76 (2006.01); C08K 5/1565 (2006.01);
U.S. Cl.
CPC ...
C09J 175/04 (2013.01); C08G 18/2063 (2013.01); C08G 18/3206 (2013.01); C08G 18/4244 (2013.01); C08G 18/6607 (2013.01); C08G 18/7664 (2013.01); E04D 5/148 (2013.01); C08K 5/1565 (2013.01);
Abstract
A low-VOC, two-component polyurethane adhesive is provided. The polyurethane adhesive has an A-side that includes an isocyanate and a non-reactive plasticizer, and a B-side that includes an aliphatic polyester polyol, a non-polyester polyol, and a urethane catalyst. The A-side and the B-side are reacted at a volume ratio of 1:1 and formulated at an NCO/OH index within the range of 0.90 to 1.10. The polyurethane adhesive is solvent-free and is particularly suitable for adhering a polymeric membrane to a substrate.