Resumes
Resumes
Tianzhi Zhang Phones & Addresses
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Flushing, NY
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East Brunswick, NJ
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Sayreville, NJ
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57 Winding Wood Dr, Sayreville, NJ 08872 (732) 698-1669
Work
Position:
Executive, Administrative, and Managerial Occupations
Publications
Us Patents
Functional Polyisobutylene-Containing Oligomers And Polymers
View pageUS Patent:
20160083487, Mar 24, 2016
Filed:
Nov 6, 2015
Appl. No.:
14/934941
Inventors:
- Duesseldorf, DE
- Shanghai, CN
Yuheng Yang - Shanghai, CN
Tianzhi Zhang - Belle Mead NJ, US
- Shanghai, CN
Yuheng Yang - Shanghai, CN
Tianzhi Zhang - Belle Mead NJ, US
International Classification:
C08F 110/10
C08L 23/26
C08L 23/26
Abstract:
A method of making functional polyisobutylene (PIB)-containing oligomers and polymers. By the disclosed method, the synthesis of functional PIB-containing polymers can be achieved directly under cationic polymerization conditions and does not include any post-polymerization reactions. The desired functionality is introduced by direct Electrophilic Aromatic Substitution (EAS) reaction using substituted phenyl ring carrying desirable functionalities that do not react with Lewis acid but have weak association with Lewis acid, which still allow living polymerization and EAS reaction under living cationic polymerization conditions. In the disclosed method functional polyisobutylene or isobutylene containing oligomers and polymers can be prepared using stoichiometric or near stoichiometric ratios of the capping or functionalization reagent to polymer end-chain.