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:
Oct. 11, 2022
Filed:
Dec. 19, 2019
Applicant:
Prc-desoto International, Inc., Sylmar, CA (US);
Inventor:
Chandra Rao, Valencia, CA (US);
Assignee:
PRC-DESOTO INTERNATIONAL, INC., Sylmar, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/045 (2016.01); C09K 3/10 (2006.01);
U.S. Cl.
CPC ...
C08G 75/045 (2013.01); C09K 3/1012 (2013.01); C09K 2200/0682 (2013.01);
Abstract
Polythioether prepolymers that have a low nucleation temperature. The symmetry of the polythioether prepolymers is modified by including pendent groups extending from the backbone of the polythioether prepolymer chain and/or the symmetry is modified by including segments having a different number of —C(R)— groups between heteroatoms. The polythioether prepolymers are stable at low temperature storage conditions for an extended period of time. Compositions prepared using the low nucleation temperature polythioether prepolymers are useful as sealants.