公开(公告)号：US20150252232A1

公开(公告)日：2015-09-10

申请号：US14200569

申请日：2014-03-07

Applicant: PRC-DeSoto International, Inc.

Inventor： Raquel Keledjian ,  Marfi Ito ,  Renhe Lin

IPC: C09J181/02

CPC classification number: C09J181/02 ,  C08G18/10 ,  C08G18/52 ,  C08G18/6715 ,  C08G18/758 ,  C08G75/02 ,  C08G2190/00 ,  C09J175/04

Abstract: Urethane-containing prepolymers formed from diisocyanates and adapted for Michael addition curing chemistries and compositions thereof for use in sealant applications are disclosed. The prepolymers provide compositions that exhibit room temperature stability and a controlled curing rate following a brief activation.

Abstract translation: 公开了由二异氰酸酯形成并适用于迈克尔加成固化化学物质的聚氨酯预聚物及其组合物，用于密封剂应用中。 预聚物提供表现出室温稳定性和短暂活化后控制的固化速率的组合物。

公开(公告)号：US20150240033A1

公开(公告)日：2015-08-27

申请号：US14708320

申请日：2015-05-11

Applicant: PRC-DeSoto International, Inc.

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

IPC: C08G75/02 ,  C09D181/02

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

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. In particular, sulfur-containing polymers and sulfur containing Michael acceptor adducts having terminal 1-(ethylenesulfonyl)-n-(vinylsulfonyl)alkanol groups are 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。 特别地，公开了具有末端1-（乙基磺酰基） - （乙烯基磺酰基）烷醇基团的含硫聚合物和含硫的Michael受体加合物。

公开(公告)号：US20150086726A1

公开(公告)日：2015-03-26

申请号：US14560565

申请日：2014-12-04

Applicant: PRC-DeSoto International, Inc.

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

IPC: C09J181/02 ,  C08G75/02

CPC classification number: C09J181/02 ,  C08G75/02 ,  C08G75/12 ,  C08L81/02

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.

Abstract translation: 公开了制造固化的密封剂的方法。 所述方法包括将未固化的密封剂组合物沉积在基材上并将未固化的密封剂组合物暴露于光化辐射以提供固化的密封剂。 未固化的密封剂组合物包括硫醇封端的聚硫醚，包含聚乙烯醚和/或聚烯丙基化合物的多烯和羟基官能的乙烯基醚。 还公开了相关的密封剂组合物。

公开(公告)号：US20150056397A1

公开(公告)日：2015-02-26

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 ,  C08G18/38 ,  C08G18/77

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.

Abstract translation: 公开了含有多异氰酸酯和多胺的含硫聚脲组合物。 多异氰酸酯包括含有具有对硫醇基具有不同反应性的异氰酸酯基的二异氰酸酯的反应物和硫醇封端的含硫聚合物如硫醇封端的聚硫醚聚合物和/或硫醇封端的聚甲醛聚合物的反应产物。 多胺可以是芳族多胺和/或芳族胺封端的聚硫醚加合物。 含硫聚脲组合物可用作航空密封剂。

公开(公告)号：US20140255609A1

公开(公告)日：2014-09-11

申请号：US14284615

申请日：2014-05-22

Applicant: PRC-DeSoto International, Inc.

Inventor： Steven J. Hobbs ,  Gregory J. McCollum ,  Lawrence G. Anderson ,  Renhe Lin

IPC: C08G16/04 ,  B05D3/02 ,  C09D161/00

CPC classification number: C08G16/04 ,  B05D3/0254 ,  C08F128/04 ,  C08G4/00 ,  C08G75/10 ,  C08G75/12 ,  C09D159/00 ,  C09D161/00 ,  C09D181/02 ,  C09K3/1012

Abstract: Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.

Abstract translation: 公开了作为含硫二醇，醛或酮的反应产物和含有官能团的化合物的末端改性双官能含硫聚合物。 还公开了包含用作密封剂的末端改性的双官能含硫聚合物的组合物。

公开(公告)号：US20140171587A1

公开(公告)日：2014-06-19

申请号：US14184772

申请日：2014-02-20

Applicant: PRC-DeSoto International, Inc.

Inventor： Steven J. Hobbs ,  Juexiao Cai ,  Marfi Ito ,  Renhe Lin

IPC: C09D175/04

CPC classification number: C09D175/04 ,  C08G18/10 ,  C08G18/52 ,  C08G18/56 ,  C08G18/755 ,  C08G18/758 ,  C08G18/798 ,  C08G2190/00 ,  C09J175/02 ,  C08G18/281 ,  C08G18/3868

Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.

公开(公告)号：US20140110881A1

公开(公告)日：2014-04-24

申请号：US13659113

申请日：2012-10-24

Applicant: PRC-DeSoto International, Inc.

Inventor： Raquel Keledjian ,  Lawrence G. Anderson ,  Renhe Lin

IPC: C08G75/02

CPC classification number: C08G75/02 ,  B32B15/08 ,  C08F8/34 ,  C08L83/00 ,  C09J181/02

Abstract: Compositions comprising sulfur-containing polymers such as polythioethers and polysulfides, polyepoxides, and controlled-release amine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life and the rate of curing can be tailored for specific applications.

Abstract translation: 公开了包含含硫聚合物如聚硫醚和多硫化物的组合物，聚环氧化物和用于航空密封剂应用的控释胺催化剂。 组合物具有延长的适用期，并且固化速率可以针对具体应用进行调整。

公开(公告)号：US20130310531A1

公开(公告)日：2013-11-21

申请号：US13950668

申请日：2013-07-25

Applicant: PRC-DeSoto International, Inc.

Inventor： Stephen J. Hobbs ,  Gregory J. McCollum ,  Lawrence G. Anderson ,  Renhe Lin

IPC: C08F128/04 ,  C08G75/10

CPC classification number: C08G16/04 ,  B05D3/0254 ,  C08F128/04 ,  C08G4/00 ,  C08G75/10 ,  C08G75/12 ,  C09D159/00 ,  C09D161/00 ,  C09D181/02 ,  C09K3/1012

Abstract: Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.

Abstract translation: 公开了作为含硫二醇，醛或酮的反应产物和含有官能团的化合物的末端改性双官能含硫聚合物。 还公开了包含用作密封剂的末端改性的双官能含硫聚合物的组合物。

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.