公开(公告)号：US11091582B2

公开(公告)日：2021-08-17

申请号：US15848387

申请日：2017-12-20

Applicant: PRC-DeSoto International, Inc.

Inventor： Razmik Boghossian ,  Ahmed Sharaby

IPC: C08G18/38 ,  C08G18/12 ,  C07C321/14 ,  C08G18/76 ,  C08G18/65 ,  C09K3/10 ,  C08G18/75 ,  C08G18/10 ,  C08G18/50 ,  C08G18/18

Abstract: Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications.

公开(公告)号：US20180112025A1

公开(公告)日：2018-04-26

申请号：US15848387

申请日：2017-12-20

Applicant: PRC-DeSoto International, Inc.

Inventor： Razmik Boghossian ,  Ahmed Sharaby

IPC: C08G18/12 ,  C08G18/76 ,  C07C321/14 ,  C08G18/65 ,  C09K3/10 ,  C08G18/38

CPC classification number: C08G18/12 ,  C07C321/14 ,  C08G18/10 ,  C08G18/1816 ,  C08G18/3868 ,  C08G18/3876 ,  C08G18/5024 ,  C08G18/65 ,  C08G18/758 ,  C08G18/7671 ,  C08G2190/00 ,  C09K3/1021 ,  C08G18/48

Abstract: Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications.

公开(公告)号：US09902799B2

公开(公告)日：2018-02-27

申请号：US14937904

申请日：2015-11-11

Applicant: PRC-DeSoto International, Inc.

Inventor： Razmik Boghossian ,  Ahmed Sharaby

IPC: C08G18/12 ,  C07C321/14 ,  C08G18/76 ,  C08G18/38 ,  C08G18/65 ,  C09K3/10

CPC classification number: C08G18/12 ,  C07C321/14 ,  C08G18/3868 ,  C08G18/3876 ,  C08G18/65 ,  C08G18/7671 ,  C09K3/1021

Abstract: Adducts and prepolymers comprising pendent alkyl groups are disclosed. Polythiol adducts prepared by reacting a polythiol with a ketone and urethane-extended polythiol adducts. The polythiol adducts can be terminated with isocyanate groups. Compositions comprising the isocyanate-terminated polythiol adducts, isocyanate-terminated sulfur-containing prepolymers, and diisocyanates can be combined with polyamine or polyepoxide curing agents to provide curable compositions. Cured compositions are suitable for aerospace coating and sealant applications. The compositions can also include a low specific gravity filler and, when cured, meet the requirements of aerospace sealant applications.