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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 12595367 B1

PDFFull Text
Date of Patent:
Apr. 07, 2026

Filed:

Jan. 11, 2021

Polyurethane composition with good adhesion to plastics

Applicant:

Sika Technology Ag, Baar, CH;

Inventors:

Sven Reimann, Zürich, CH;

Marc Balmer, Unterengstringen, CH;

Melanie Jenni, Spreitenbach, CH;

Assignee:

SIKA TECHNOLOGY AG, Baar, CH;

Attorney:

Oliff PLC

Primary Examiner:

Jeffrey D Washville

Int. Cl.
CPC ...
C08L 75/08 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 27/38 (2006.01); B32B 27/40 (2006.01); C09D 175/08 (2006.01);
U.S. Cl.
CPC ...
C08L 75/08 (2013.01); B32B 27/08 (2013.01); B32B 27/302 (2013.01); B32B 27/304 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); B32B 27/38 (2013.01); B32B 27/40 (2013.01); C09D 175/08 (2013.01); B32B 7/12 (2013.01); B32B 2270/00 (2013.01);
Abstract

A moisture-curing polyurethane composition including (i) at least one linear polymer P1 containing isocyanate groups and having an NCO content in range from 0.3%-3.3% by weight, obtained from reaction of at least one monomeric aromatic diisocyanate and polyether diol having an OH number in range from 5-37 mg KOH/g, (ii) at least one branched polymer P2 containing isocyanate groups and having an NCO content in range from 1%-10% by weight, obtained from reaction of at least one monomeric aromatic diisocyanate and at least one polyether triol having an average OH functionality of at least 2.2 and OH number in range from 16-380 mg KOH/g, (iii) and a content of plasticizers of not more than 15% by weight, based on overall composition, wherein polymers P1 and P2 are present in weight ratio in range from 80/20-95/5, and to the use of composition as elastic adhesive or elastic sealant or elastic coating.

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