公开(公告)号：US11015057B2

公开(公告)日：2021-05-25

申请号：US16373668

申请日：2019-04-03

Applicant: PRC-DeSoto International, Inc.

Inventor： Chandra Rao ,  Renhe Lin

IPC: C08L81/02 ,  C08K5/19 ,  C08K5/55 ,  C08L71/02 ,  C09K3/10 ,  C08G75/04

Abstract: Dual cure compositions include a combination of an organoborane complex and a radical oxidizing agent as co-catalysts. The compositions are curable under dark conditions and can be used to catalyze thiol-ene reactions. The compositions are useful as sealants.

公开(公告)号：US10273391B2

公开(公告)日：2019-04-30

申请号：US15403623

申请日：2017-01-11

Applicant: PRC-DeSoto International, Inc.

Inventor： Weibin Cui ,  Renhe Lin

IPC: C08G75/02 ,  C08G75/12 ,  C09J181/02

Abstract: Thiol-terminated polythioether compositions and sealants exhibit an extended working time and rapidly cure at room temperature at the end of the working time are disclosed. The compositions comprise a combination of pyridine catalysts.

公开(公告)号：US10233369B2

公开(公告)日：2019-03-19

申请号：US15967608

申请日：2018-05-01

Applicant: PRC-DeSoto International, Inc.

Inventor： Raquel Keledjian ,  Renhe Lin ,  Chandra Rao ,  Bruce Virnelson

IPC: C08F283/00 ,  C08G75/02 ,  C08L81/02 ,  C09J181/02 ,  C08G75/12

Abstract: Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.

公开(公告)号：US20190010370A1

公开(公告)日：2019-01-10

申请号：US15644587

申请日：2017-07-07

Applicant: PRC-DeSoto International, Inc.

Inventor： Renhe Lin ,  Weibin Cui

IPC: C09J163/04 ,  C09J163/00

CPC classification number: C09J163/04 ,  C08L81/02 ,  C09J163/00 ,  C09K3/1012 ,  C08L63/00 ,  C08K3/013 ,  C08L101/00

Abstract: Compositions that are resistant to hydraulic fluid and aviation fuel contain sulfur-containing prepolymers and solvent-resistant organic fillers. The compositions are useful in aerospace sealant applications.

公开(公告)号：US20180155280A1

公开(公告)日：2018-06-07

申请号：US15886242

申请日：2018-02-01

Applicant: PRC-DeSoto International, Inc.

Inventor： Weibin Cui ,  Renhe Lin

IPC: C07C323/12 ,  C08G75/12 ,  C08G75/02 ,  C09K3/10 ,  C08G75/045

CPC classification number: C07C323/12 ,  C08G75/02 ,  C08G75/045 ,  C08G75/12 ,  C08G2190/00 ,  C09K3/1012 ,  C09K2003/1059

Abstract: Hydroxyl-containing bis(alkenyl) ethers can be incorporated into the backbone of polythioether prepolymers and can be used as curing agents in thiol-terminated polythioether prepolymer compositions. Cured sealants prepared using compositions containing hydroxyl-containing bis(alkenyl) ether-containing polythioether prepolymers and/or hydroxyl-containing bis(alkenyl) ether curing agents exhibit improved physical properties such as rapid curing and compatibility with fillers suitable for use in aerospace sealant applications.

公开(公告)号：US20160304251A9

公开(公告)日：2016-10-20

申请号：US13659074

申请日：2012-10-24

Applicant: PRC-DeSoto International, Inc.

Inventor： Bruce Virnelson ,  Raquel Keledjian ,  Renhe Lin ,  Chandra B. Rao

IPC: B65D41/00 ,  B32B37/12

CPC classification number: B65D41/005 ,  B32B37/1284 ,  C08G75/02 ,  C08G75/045 ,  C08G75/12 ,  C08L81/02 ,  C09J181/02

Abstract: UV curable sealants, method s for making the sealants, and method for using the sealants are disclosed. The UV curable sealants may be used in seal caps useful to seal fasteners in aerospace fuel tanks. The UV curable sealants may also be used to smooth defects in surfaces such as aerospace surfaces.

公开(公告)号：US09388280B2

公开(公告)日：2016-07-12

申请号：US14463047

申请日：2014-08-19

Applicant: PRC-DeSoto International, Inc.

Inventor： Lawrence G. Anderson ,  Juexiao Cai ,  Marfi Ito ,  Raquel Keledjian ,  Renhe Lin

IPC: C08G75/02 ,  C08L81/02 ,  C08L81/04 ,  C08G75/12 ,  C08G75/14

CPC classification number: C08G75/02 ,  C08G75/12 ,  C08G75/14 ,  C08L81/02 ,  C08L81/04

Abstract: The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.

Abstract translation: 公开了在包含含硫聚合物如聚硫醚和聚硫化物的组合物中使用迈克尔加成固化化学物质，其用于航空密封剂应用。 还公开了包含末端迈克尔受体基团的含硫加成物。

公开(公告)号：US09382447B2

公开(公告)日：2016-07-05

申请号：US14987806

申请日：2016-01-05

Applicant: PRC-DeSoto International, Inc.

Inventor： Steven J. Hobbs ,  Gregory J. McCollum ,  Juexiao Cai ,  Marfi Ito ,  Lawrence G. Anderson ,  Renhe Lin

IPC: C09D5/34 ,  C09D175/08 ,  C08G18/32 ,  C09D175/10 ,  C08G18/38 ,  C08G18/50 ,  C08G75/02 ,  C08G75/10 ,  C08G77/00 ,  C08G18/00 ,  C07D251/30

CPC classification number: C09D175/08 ,  C07C265/04 ,  C07C265/12 ,  C07D251/30 ,  C08G18/006 ,  C08G18/3857 ,  C08G18/5072 ,  C08G65/336 ,  C08G65/34 ,  C08G75/02 ,  C08G75/10 ,  C08G75/12 ,  C08G77/00 ,  C09D5/34 ,  C09D175/10 ,  C09J181/02

Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.

公开(公告)号：US09260567B2

公开(公告)日：2016-02-16

申请号：US14794855

申请日：2015-07-09

Applicant: PRC-DeSoto International, Inc.

Inventor： Steven J. Hobbs ,  Gregory J. McCollum ,  Juexiao Cai ,  Marfi Ito ,  Lawrence G. Anderson ,  Renhe Lin

IPC: C07F7/08 ,  C09J159/00 ,  C09D5/00 ,  C07D251/30 ,  C08G75/10 ,  C07C265/12 ,  C07C265/04 ,  C09J181/02

CPC classification number: C09D175/08 ,  C07C265/04 ,  C07C265/12 ,  C07D251/30 ,  C08G18/006 ,  C08G18/3857 ,  C08G18/5072 ,  C08G65/336 ,  C08G65/34 ,  C08G75/02 ,  C08G75/10 ,  C08G75/12 ,  C08G77/00 ,  C09D5/34 ,  C09D175/10 ,  C09J181/02

Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.

公开(公告)号：US09056949B2

公开(公告)日：2015-06-16

申请号：US13923941

申请日：2013-06-21

Applicant: PRC-DeSoto International, Inc.

Inventor： Juexiao Cai ,  Lawrence G. Anderson ,  Marfi Ito ,  Renhe Lin

IPC: C08G75/04 ,  C08G75/12 ,  C07C317/18 ,  C08G75/02 ,  C09J181/02 ,  C08L81/02

CPC classification number: C08G75/02 ,  C07C317/18 ,  C08G75/12 ,  C08L81/02 ,  C09D181/02 ,  C09J181/02

Abstract: Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides are useful in aerospace sealant applications. Compositions employing Michael addition curing chemistries include sulfur-containing adducts comprising terminal Michael acceptor groups. In particular, the sulfur-containing adducts include terminal 1-(ethylenesulfonyl)-n-(vinylsulfonyl)alkanol groups.

Abstract translation: 包含含硫聚合物如聚硫醚和聚硫化物的组合物中的迈克尔加成固化化学物质可用于航空航天密封剂应用中。 使用迈克尔加成固化化学物质的组合物包括含有末端迈克尔受体基团的含硫加合物。 特别地，含硫加合物包括1-（乙基磺酰基）-N-（乙烯基磺酰基）烷醇基团。