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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.:

US 11352462 B1

PDFFull Text
Date of Patent:
Jun. 07, 2022

Filed:

Dec. 12, 2018

Flame-retarded rigid polyurethane foams

Applicant:

Covestro Deutschland Ag, Leverkusen, DE;

Inventors:

Hartmut Nefzger, Pulheim, DE;

Persefoni Hilken, Cologne, DE;

Markus Meuresch, Cologne, DE;

Aurel Wolf, Wülfrath, DE;

Assignee:

COVESTRO DEUTSCHLAND AG, Leverkusen, DE;

Attorney:

K&L Gates LLP

Primary Examiner:

John M Cooney

Int. Cl.
CPC ...
C08G 18/38 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/50 (2006.01); C08G 18/66 (2006.01); C08J 9/00 (2006.01); C08J 9/14 (2006.01);
U.S. Cl.
CPC ...
C08G 18/3831 (2013.01); C08G 18/4018 (2013.01); C08G 18/4202 (2013.01); C08G 18/4213 (2013.01); C08G 18/4238 (2013.01); C08G 18/5024 (2013.01); C08G 18/6696 (2013.01); C08J 9/0038 (2013.01); C08J 9/141 (2013.01); C08G 2110/005 (2021.01); C08G 2110/0025 (2021.01); C08G 2110/0058 (2021.01); C08G 2110/0066 (2021.01); C08J 2203/14 (2013.01); C08J 2205/10 (2013.01); C08J 2375/12 (2013.01);
Abstract

A process for producing rigid PUR/PIR foams comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, A5 optionally auxiliaries and additives, and B an organic polyisocyanate component. Component A1 comprises a triurethane triol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.

Find Patent Forward Citations

Nefzger, Hartmut. (2022). Flame-retarded rigid polyurethane foams (U.S. Patent No. 11352462). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11352462

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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