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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
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.
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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.
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公开(公告)号：US11898054B2
公开(公告)日：2024-02-13
申请号：US17099825
申请日：2020-11-17
Applicant: PRC-DeSoto International, Inc.
Inventor： Bruce Virnelson , Chandra Rao , Renhe Lin
IPC: C09D175/14 , C09J175/16 , C09D175/16 , C09J175/14 , C08G18/52 , C08G18/76 , C08G18/79 , C08G18/10 , C08G18/38 , C08G18/28 , C08G18/75
CPC classification number: C09D175/16 , C08G18/10 , C08G18/2805 , C08G18/3876 , C08G18/52 , C08G18/753 , C08G18/7621 , C08G18/7671 , C08G18/792 , C09D175/14 , C09J175/14 , C08G18/10 , C08G18/2805
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.
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公开(公告)号：US11466125B2
公开(公告)日：2022-10-11
申请号：US16721349
申请日：2019-12-19
Applicant: PRC-DeSoto International, Inc.
Inventor： Chandra Rao
IPC: C08G75/045 , C09K3/10
Abstract: Polythioether prepolymers that have a low nucleation temperature. The symmetry of the polythioether prepolymers is modified by including pendent groups extending from the backbone of the polythioether prepolymer chain and/or the symmetry is modified by including segments having a different number of —C(R)2— groups between heteroatoms. The polythioether prepolymers are stable at low temperature storage conditions for an extended period of time. Compositions prepared using the low nucleation temperature polythioether prepolymers are useful as sealants.
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公开(公告)号：US10883016B2
公开(公告)日：2021-01-05
申请号：US16324458
申请日：2017-08-08
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.
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Patent Agency Ranking
公开(公告)号：US20190169465A1
公开(公告)日：2019-06-06
申请号：US16324458
申请日：2017-08-08
Applicant: PRC-DeSoto International, Inc.
Inventor： Bruce Virnelson , Chandra Rao , Renhe Lin
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.
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公开(公告)号：US10047259B2
公开(公告)日：2018-08-14
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: C08L81/02 , C09J181/02 , C08G75/02 , 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.
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8.发明申请METHODS FOR MAKING CURED SEALANTS BY ACTINIC RADIATION AND RELATED COMPOSITIONS 审中-公开通过电泳辐照和相关组合物制备固化的密封剂的方法公开(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。
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公开(公告)号：US20170114208A1
公开(公告)日：2017-04-27
申请号：US14922280
申请日：2015-10-26
Applicant: PRC-DeSoto International, Inc.
Inventor： Chandra Rao , Juexiao Cai , Renhe Lin
IPC: C08K5/375 , C09J181/02 , C09J5/00 , C08K5/378
CPC classification number: C08K5/375 , C07C323/16 , C07D251/34 , C08G75/06 , C08K5/378 , C08K7/00 , C08L81/02 , C08L81/04 , C09J5/00 , C09J181/02 , C09J2481/00
Abstract: Reactive antioxidants, antioxidant-containing prepolymers, compositions containing reactive antioxidants and antioxidant-containing prepolymers, methods of synthesizing reactive antioxidants and reactive antioxidant-containing prepolymers and the use of reactive antioxidants and antioxidant-containing prepolymers in aerospace sealant applications are disclosed. Reactive antioxidants and antioxidant-containing prepolymers can be added to a curable composition and react with a curing agent to become incorporated into the cured polymer network. Antioxidant-containing prepolymers have antioxidants incorporated into the backbone of the prepolymer. Cured sealant compositions comprising reactive antioxidants and antioxidant-containing prepolymers exhibit enhanced thermal resistance.
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10.发明授权公开(公告)号：US09540540B2
公开(公告)日：2017-01-10
申请号：US14708314
申请日：2015-05-11
Applicant: PRC-DeSoto International, Inc.
Inventor： Chandra Rao , Juexiao Cai , Renhe Lin
IPC: C09D181/02 , C08F228/04 , C07C317/18 , C08G75/20 , C08G75/23 , C08G75/00 , C08G75/02 , C08L81/00 , C08L81/02 , C08L81/04 , C07C317/04
CPC classification number: C09D181/02 , C07C317/04 , C07C317/18 , C08F228/04 , C08G75/00 , C08G75/02 , C08G75/20 , C08G75/23 , C08L81/00 , C08L81/02 , C08L81/04
Abstract: Sulfone-containing polythioethers, compositions containing sulfone-containing polythioethers, methods of synthesizing sulfone-containing polythioethers and the use of sulfone-containing polythioethers in aerospace sealant applications are disclosed. The sulfone-containing polythioethers have sulfone groups incorporated into the backbone of the polythioether. Cured sealant compositions comprising the sulfone-containing polythioethers exhibit enhanced thermal resistance.
Abstract translation: 公开了含有砜的聚硫醚，含有砜的聚硫醚的组合物，含有砜的聚硫醚的合成方法和含有砜的聚硫醚在航天密封剂中的应用。 含砜的聚硫醚具有并入聚硫醚的主链中的砜基。 包含含砜聚硫醚的固化密封剂组合物表现出增强的耐热性。
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