IDiyas

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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 11421378 B1

PDFFull Text
Date of Patent:
Aug. 23, 2022

Filed:

Aug. 07, 2020

Fluorine-free fibrous treating compositions including a polycarbodiimide and an optional paraffin wax, and treating methods

Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventors:

Dirk M. Coppens, Beveren, BE;

Rudolf J. Dams, Antwerp, BE;

Chetan P. Jariwala, Woodbury, MN (US);

Lin Chen, St. Paul, MN (US);

Assignee:

3M Innovative Properties Company, St. Paul, MN (US);

Attorney:

Ann K. Gallagher

Primary Examiner:

Robert S Walters, Jr

Int. Cl.
CPC ...
D06M 15/263 (2006.01); C14C 9/00 (2006.01); D21H 21/16 (2006.01); D21H 17/54 (2006.01); D06M 15/59 (2006.01); D21H 19/24 (2006.01); D06M 15/653 (2006.01); C08G 18/62 (2006.01); C08G 18/09 (2006.01); C08G 18/16 (2006.01); D21H 17/57 (2006.01); C08G 18/79 (2006.01); C08G 18/02 (2006.01); C09D 4/00 (2006.01); D21H 17/33 (2006.01); D06M 15/01 (2006.01); D21H 17/37 (2006.01); D21H 19/20 (2006.01);
U.S. Cl.
CPC ...
D06M 15/263 (2013.01); C08G 18/025 (2013.01); C08G 18/095 (2013.01); C08G 18/168 (2013.01); C08G 18/6229 (2013.01); C08G 18/6283 (2013.01); C08G 18/797 (2013.01); C09D 4/00 (2013.01); C14C 9/00 (2013.01); D06M 15/01 (2013.01); D06M 15/59 (2013.01); D06M 15/653 (2013.01); D21H 17/33 (2013.01); D21H 17/37 (2013.01); D21H 17/54 (2013.01); D21H 17/57 (2013.01); D21H 19/20 (2013.01); D21H 19/24 (2013.01); D21H 21/16 (2013.01); D06M 2200/12 (2013.01);
Abstract

A fluorine-free composition includes at least one polycarbodiimide compound derived from a carbodiimidization reaction of a carbodiimidization reaction mixture comprising at least one oligomer, wherein the oligomer comprises at least one isocyanate end group and at least two repeating units, wherein each of the at least two repeating units comprises at least one hydrocarbon group having at least 16 carbon atoms. The composition may also include at least one paraffin wax. Such compositions are useful for treating fibrous substrates to enhance their water-repellency.

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