公开(公告)号：US11015097B2

公开(公告)日：2021-05-25

申请号：US16293831

申请日：2019-03-06

Applicant: PRC-DeSoto International, Inc.

Inventor： Weibin Cui ,  Juexiao Cai ,  Renhe Lin

IPC: C08K3/10 ,  C09K3/10 ,  B64G1/22 ,  C08G81/00 ,  C08L87/00

Abstract: Chemically resistant sealant compositions include high equivalent weight sulfur-containing prepolymers. Upon exposure to chemicals the properties of sealants prepared using the prepolymers exhibit excellent fuel and phosphate ester resistance.

公开(公告)号：US20210071032A1

公开(公告)日：2021-03-11

申请号：US17099825

申请日：2020-11-17

Applicant: PRC-DeSoto International, Inc.

Inventor： Bruce Virnelson ,  Chandra Rao ,  Renhe Lin

IPC: C09D175/16 ,  C08G18/52 ,  C08G18/76 ,  C08G18/79 ,  C08G18/10 ,  C08G18/38 ,  C08G18/28 ,  C09D175/14 ,  C09J175/14 ,  C08G18/75

Abstract: Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.

公开(公告)号：US20200172777A1

公开(公告)日：2020-06-04

申请号：US16782137

申请日：2020-02-05

Applicant: PRC-DeSoto International, Inc.

Inventor： Renhe Lin ,  Weibin Cui

IPC: C09J163/04 ,  C09J163/00 ,  C09K3/10 ,  C08L81/02

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：US10597565B2

公开(公告)日：2020-03-24

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 ,  C09K3/10 ,  C08L81/02

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：US10011751B2

公开(公告)日：2018-07-03

申请号：US15060636

申请日：2016-03-04

Applicant: PRC-DeSoto International, Inc.

Inventor： Lawrence G. Anderson ,  Juexiao Cai ,  Mark P. Bowman ,  Renhe Lin

IPC: C09J181/02 ,  B05D5/00 ,  C09D4/00 ,  C08G75/00 ,  C08G75/02 ,  C09J181/00 ,  C08L63/04 ,  C08L81/00 ,  C08L81/02 ,  C09J5/00

CPC classification number: C09J181/02 ,  B05D5/00 ,  C08G75/00 ,  C08G75/02 ,  C08L63/04 ,  C08L81/00 ,  C08L81/02 ,  C09D4/00 ,  C09J5/00 ,  C09J181/00 ,  C09J2481/00

Abstract: Compositions comprising Michael acceptor-terminated sulfur-containing prepolymers, thiol-terminated sulfur-containing prepolymers, and e phosphine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life, cure rapidly following activation, and provide cured sealants having improved properties useful in aerospace sealant applications.

公开(公告)号：US09725556B2

公开(公告)日：2017-08-08

申请号：US14532034

申请日：2014-11-04

Applicant: PRC-DeSoto International, Inc.

Inventor： Juexiao Cai ,  Stephen J. Hobbs ,  Marfi Ito ,  Scott Moravek ,  Renhe Lin

IPC: C08G18/52 ,  C08G18/77 ,  C08G18/75 ,  C08G18/76 ,  C08G18/10 ,  C08G18/32 ,  C08G18/38 ,  C09J175/02

CPC classification number: C08G18/52 ,  C08G18/10 ,  C08G18/324 ,  C08G18/3868 ,  C08G18/755 ,  C08G18/7621 ,  C08G18/775 ,  C08G2190/00 ,  C09J175/02 ,  Y10T428/20 ,  C08G18/6685

Abstract: Sulfur-containing polyurea compositions comprising a polyisocyanate and a polyamine are disclosed. The polyisocyanate comprises the reaction product of reactants comprising a diisocyanate having isocyanate groups with different reactivities toward thiol groups, and a thiol-terminated sulfur-containing polymer such as a thiol-terminated polythioether polymer and/or a thiol-terminated polyformal polymer. The polyamine can be an aromatic polyamine and/or an aromatic amine-terminated polythioether adduct. The sulfur-containing polyurea compositions are useful as aerospace sealants.

公开(公告)号：US09611359B2

公开(公告)日：2017-04-04

申请号：US14065499

申请日：2013-10-29

Applicant: PRC-DeSoto International, Inc.

Inventor： Chandra Rao ,  Renhe Lin

IPC: C08G75/04 ,  C08G75/045 ,  C09K3/10 ,  C08L81/00

CPC classification number: C08G75/045 ,  C08G75/12 ,  C08G2190/00 ,  C08L81/00 ,  C09K3/1012

Abstract: Sulfur-containing polymer adducts such as polythioethers, polysulfides, and sulfur-containing polyformals having terminal maleimide groups, and in particular, sulfur-containing polymers and sulfur containing adducts having terminal 1,1′-(methylenedi-4,1-phenylene)bismaleimide groups are disclosed. The adducts provide cured sealants having improved tensile strength and elongation and are useful as aerospace sealants.

公开(公告)号：US09422451B2

公开(公告)日：2016-08-23

申请号：US14593069

申请日：2015-01-09

Applicant: PRC-DeSoto International, Inc.

Inventor： Chandra Rao ,  Marfi Ito ,  Renhe Lin

IPC: C08G75/04 ,  C08F283/00 ,  C08G59/14 ,  C08L63/00 ,  C08G75/00 ,  C08L81/00 ,  C08F290/06 ,  C08K5/00 ,  C08G75/02 ,  C09D181/02 ,  C09D163/00 ,  B60K15/03

CPC classification number: C09D181/02 ,  B60K15/03 ,  B60K2015/03493 ,  C08G75/00 ,  C08G75/02 ,  C08L81/00 ,  C08L81/02 ,  C09D163/00

Abstract: Low-density compositions and sealants prepared from sulfur-containing prepolymer compositions that exhibit enhanced fuel resistance are disclosed. The low density and enhanced fuel resistance is realized by using polyphenylene sulfide fillers.

Abstract translation: 公开了由显示出增强的耐燃性的含硫预聚物组合物制备的低密度组合物和密封剂。 通过使用聚苯硫醚填料实现低密度和增强的耐燃料性。

公开(公告)号：US09365678B2

公开(公告)日：2016-06-14

申请号：US14463082

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.

公开(公告)号：US09365677B2

公开(公告)日：2016-06-14

申请号：US13940813

申请日：2013-07-12

Applicant: PRC-DeSoto International, Inc.

Inventor： Raquel Keledjian ,  Renhe Lin ,  Bruce Virnelson

IPC: C08G75/02 ,  C08G73/00 ,  C07D251/32 ,  C08K5/378

CPC classification number: C08G75/02 ,  C08K5/378 ,  Y10T428/24331

Abstract: Disclosed are sulfur-containing polymers containing copolymerizable adhesion promoters and compositions including sealant compositions useful in aerospace applications comprising sulfur-containing polymers containing copolymerizable adhesion promoters. In particular, polythioethers and polysulfides incorporating copolymerizable adhesion promoters are disclosed.