IDiyas

For the Inventor, By the Inventor

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 11407852 B1

PDFFull Text
Date of Patent:
Aug. 09, 2022

Filed:

Nov. 25, 2019

Modified polyisocyanate

Applicant:

Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;

Inventors:

Hans-Josef Laas, Odenthal, DE;

Hao Liu, Shanghai, CN;

Na Xu, Shanghai, CN;

Guoping Shi, Guangdong, CN;

Yaguang Ma, Shanghai, CN;

Tian Xia, Shanghai, CN;

Assignee:

Covestro Intellectual Property GmbH & Co. KG, Leverkusen, DE;

Attorney:

John E. Mrozinski, Jr.

Primary Examiner:

Jeffrey D Washville

Int. Cl.
CPC ...
C08G 18/73 (2006.01); C08G 18/08 (2006.01); C08G 18/18 (2006.01); C08G 18/48 (2006.01); C09D 175/12 (2006.01); C09J 175/12 (2006.01); C09K 3/10 (2006.01);
U.S. Cl.
CPC ...
C08G 18/73 (2013.01); C08G 18/0828 (2013.01); C08G 18/1816 (2013.01); C08G 18/4829 (2013.01); C09D 175/12 (2013.01); C09J 175/12 (2013.01); C09K 3/1021 (2013.01); C09K 2200/065 (2013.01);
Abstract

The present invention relates to a modified polyisocyanate and use thereof, in particular as a crosslinking component of water-soluble or water-dispersible coatings. The modified polyisocyanate is obtained by a reaction of a system comprising the following components: at least an aminosulfonic acid; at least a polyisocyanate; at least a tertiary amine; and optionally a polyether alcohol containing an ethylene oxide group. The modified polyisocyanate comprises at least an iminooxadiazinedione structure and at least an isocyanurate structure, the weight ratio of the iminooxadiazinedione structure to the isocyanurate structure being 1:300 to 1:5. The amount of sulfonate group of the modified polyisocyanate is 0.75% by weight to 1.1% by weight, based on the amount of the modified polyisocyanate as 100% by weight. The viscosity thereof is 500 mPa·s to 10000 mPa·s, as determined according to DIN EN ISO 3219:1994-10 at a temperature of 23° C. and a shear rate of 10 s. The coating comprising the modified polyisocyanate of the present invention can be manually stirred well, and the resulting coating layer has high gloss and good transparency.

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