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:
May. 12, 2026
Filed:
Aug. 23, 2021
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 18/12 (2006.01); B29C 67/24 (2006.01); C08G 18/09 (2006.01); C08G 18/32 (2006.01); C08G 18/48 (2006.01); C08G 18/50 (2006.01); C08G 18/66 (2006.01); C08G 18/76 (2006.01); C08K 3/26 (2006.01); C08K 7/14 (2006.01); C08L 75/08 (2006.01);
U.S. Cl.
CPC ...
C08G 18/12 (2013.01); B29C 67/246 (2013.01); C08G 18/092 (2013.01); C08G 18/3281 (2013.01); C08G 18/4812 (2013.01); C08G 18/4816 (2013.01); C08G 18/482 (2013.01); C08G 18/4829 (2013.01); C08G 18/5021 (2013.01); C08G 18/5033 (2013.01); C08G 18/6688 (2013.01); C08K 3/26 (2013.01); C08K 7/14 (2013.01); C08L 75/08 (2013.01); C08G 18/7664 (2013.01); C08G 2110/0025 (2021.01); C08G 2110/0033 (2021.01); C08G 2110/005 (2021.01); C08K 2003/265 (2013.01); C08K 2201/003 (2013.01); C08K 2201/004 (2013.01);
Abstract
Rigid polyurethanes and composites are made from a reaction mixture containing an aromatic polyisocyanate and a mixture of polyols. The mixture of polyols has an average hydroxyl equivalent weight of 125 to 275 and an average hydroxyl funtionality of 2.5 to 4 hydroxyl groups per molecule. 5 to 33% of the weight of the mixture of polyols is triisopropanolamine. Rigid polyurethanes made from such a reaction mixture have excellent dimensional stability, even when cured at or near room temperature.