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:
Feb. 16, 2021
Filed:
Jun. 26, 2018
Dow Silicones Corporation, Midland, MI (US);
Dow Global Technologies Llc, Midland, MI (US);
Martin Grasmann, Midland, MI (US);
David Hagan, Midland, MI (US);
Brian Harkness, Midland, MI (US);
William H. Heath, Lake Jackson, TX (US);
Stephen Michael Hlinka, II, Midland, MI (US);
Eric Joffre, Midland, MI (US);
William Johnson, Midland, MI (US);
Jeanette Young, Midland, MI (US);
Bizhong Zhu, Midland, MI (US);
Dow Silicones Corporation, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A silicone-polyether copolymer has the formula X[ZY], where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyether moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, and each subscript j and o are independently >0 and <2, with the proviso that j+o=2 in each moiety indicated by subscript c. A method of preparing the silicone-polyether copolymer is also disclosed, and comprises reacting a polyether compound, a chain extending organosilicon compound, and an endcapping organosilicon compound in the presence of a hydrosilylation catalyst. A sealant is also disclosed, the sealant comprising the silicone-polyether copolymer and a condensation-reaction catalyst.