Invention Application
- Patent Title: HYDROLYTICALLY STABLE SELF-HEALING ELASTOMER
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Application No.: US17613826Application Date: 2020-06-04
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Publication No.: US20220243014A1Publication Date: 2022-08-04
- Inventor: Hossam HAICK , Muhammad KHATIB
- Applicant: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LIMITED
- Applicant Address: IL Haifa
- Assignee: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LIMITED
- Current Assignee: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LIMITED
- Current Assignee Address: IL Haifa
- International Application: PCT/IL2020/050623 WO 20200604
- Main IPC: C08G75/14
- IPC: C08G75/14 ; G01L1/22 ; G01N27/414

Abstract:
The present invention provides a solution-processable self-healing hydrolytically stable elastomer, a method for the preparation thereof, and articles of manufacture comprising the elastomer. The elastomer comprises polymeric chains comprising units of formula (A1), wherein R is a polybutadiene-containing polyurethane; R1 and R1′ are independently selected from the group consisting of: —H, (C1-C20)alkyl, (C5-C14)aryl, —OR4, —(CO)R5, —O(CO)R6, —(SO)R7, CO—R8, —COOR9, —NO2, and halogen; R2, R2′, R3 and R3′ are independently selected from the group consisting of: —H, (C1-C20)alkyl, and (C5-C14)aryl; R4 to R9 are the same or different, and are independently selected from the group consisting of: —H, (C1-C20)alkyl, and (C5-C14)aryl; m is 4; wherein the elastomer is dynamically crosslinked by aromatic disulfide metathesis, and wherein the elastomer has a water contact angle of above 100 #.
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