公开(公告)号：US09988487B2

公开(公告)日：2018-06-05

申请号：US14964785

申请日：2015-12-10

Applicant: PRC-DeSoto International, Inc.

Inventor： Hongying Zhou ,  Juexiao Cai ,  Renhe Lin

IPC: C08G59/68 ,  C09J5/06 ,  C09J163/00 ,  C09J163/04

CPC classification number: C08G59/686 ,  C08G16/00 ,  C08G75/02 ,  C08K5/00 ,  C08L81/00 ,  C08L81/02 ,  C09J5/06 ,  C09J163/00 ,  C09J163/04 ,  C09J2463/00

Abstract: Compositions comprising sulfur-containing prepolymers such as polythioether prepolymers, polyepoxides, and a blocked 1,8-diazabicyclo[5.4.0]undec-7-ene bicarbonate catalyst useful as aerospace sealants are disclosed. The compositions exhibit extended working time and the curing rate can be tailored for specific applications.

公开(公告)号：US20170166689A1

公开(公告)日：2017-06-15

申请号：US14964785

申请日：2015-12-10

Applicant: PRC-DeSoto International, Inc.

Inventor： Hongying Zhou ,  JUEXIAO CAI ,  RENHE LIN

IPC: C08G59/68 ,  C09J5/06 ,  C09J163/00 ,  C09J163/04

CPC classification number: C08G59/686 ,  C08G16/00 ,  C08G75/02 ,  C08K5/00 ,  C08L81/00 ,  C08L81/02 ,  C09J5/06 ,  C09J163/00 ,  C09J163/04 ,  C09J2463/00

Abstract: Compositions comprising sulfur-containing prepolymers such as polythioether prepolymers, polyepoxides, and a blocked 1,8-diazabicyclo[5.4.0]undec-7-ene bicarbonate catalyst useful as aerospace sealants are disclosed. The compositions exhibit extended working time and the curing rate can be tailored for specific applications.

公开(公告)号：US11274167B2

公开(公告)日：2022-03-15

申请号：US16454723

申请日：2019-06-27

Applicant: PRC-DeSoto International, Inc.

Inventor： Christopher A. Dacko ,  Hongying Zhou

IPC: C08F20/36 ,  C07C271/22 ,  C07C275/16 ,  C08J5/18 ,  C09D133/14

Abstract: The present invention is directed to a compound of formula I, wherein R1 comprises hydrogen, an alkyl group, or an aryl group; R2 comprises hydrogen or a methyl group; R3 comprises a divalent organic group; R4 comprises a divalent organic group; and X comprises oxygen, NH, or N(R5), wherein R5 comprises a monovalent organic group. The present invention is also directed towards polymers comprising a pendant carbamate-functional moiety comprising the structure: wherein R1 comprises hydrogen, an alkyl group, or an aryl group; R2 comprises hydrogen or a methyl group; R3 comprises a divalent organic group; R4 comprises a divalent organic group; and X comprises oxygen, NH, or N(R5) wherein R5 comprises a monovalent organic group. The present invention is also directed to methods of preparing such compounds and polymers, compositions comprising such polymers, and coatings produced from such compositions.