Invention Grant
- Patent Title: Azido-alkyne click and oxysilane hybrid compositions
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Application No.: US16693943Application Date: 2019-11-25
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Publication No.: US11267927B2Publication Date: 2022-03-08
- Inventor: Alan Ekin , Robson F. Storey , R. Hunter Cooke, III , Harrison A. Livingston
- Applicant: Covestro LLC , The University Of Southern Mississippi
- Applicant Address: US PA Pittsburgh; US MS Hattiesburg
- Assignee: Covestro LLC,The University Of Southern Mississippi
- Current Assignee: Covestro LLC,The University Of Southern Mississippi
- Current Assignee Address: US PA Pittsburgh; US MS Hattiesburg
- Agent John E. Mrozinski, Jr.
- Main IPC: C08G18/12
- IPC: C08G18/12 ; C08G18/38 ; C08G18/28 ; C08G18/34 ; C08G18/42 ; C08G18/75 ; C08G18/76 ; C08G18/22 ; C08G18/44 ; C09J175/04 ; C08G18/78 ; C09D175/04 ; C08G18/24 ; C09J175/14 ; C09D175/14

Abstract:
The present invention provides alternative polyurethane composition comprising the reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer, wherein the poly(alkynyl carbamate) prepolymer comprises the reaction product of a polyisocyanate, an alkynol, and an oxysilane. The reaction of the polyol and the prepolymer may occur in the presence of a catalyst or at a temperature of from 20° C. to 120° C. The inventive oxysilane and azido-alkyne hybrid click formulations provide comparable performance, and in some cases better performance, to/than urethane and azido-alkyne control click formulations in terms of pencil hardness, MEK double rubs, and glass transition temperature. The inventive alternative polyurethane compositions may be used to provide coatings, adhesives, sealants, films, elastomers, castings, and composites.
Public/Granted literature
- US20210155737A1 AZIDO-ALKYNE CLICK AND OXYSILANE HYBRID COMPOSITIONS Public/Granted day:2021-05-27
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