Amphiphilic block copolymer and preparation method thereof

• Main Authors: WANG ZIYI, WANG XIUDONG, JIAO ZHEN, FAN WENJING
• Format: Patent
• Language: English
• Published: 24.06.2015
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HYGIENE; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses an amphiphilic block copolymer, which is copolymerized by a hydrophilic alpha-methyl unsaturated olefinic bond monomer polymer chain segment and a vinyl acetate monomer polymer chain segment of hydrophilic supercritical carbon dioxide, so as to obtain the amphiphilic block copolymer with the number-average molecular weight of 3,000-50,000, wherein the alpha-methyl unsaturated olefinic bond monomer polymer chain segment accounts for 20%-80% of weight of the amphiphilic block copolymer; and the alpha-methyl unsaturated olefinic bond monomer is any one of a methyl methacrylate monomer, an ethyl methacrylate monomer, a methacrylic acid normal propyl acetate monomer, a methacrylic isopropyl ester monomer, an n-butyl methacrylate monomer, an isobutyl methacrylate monomer, a tert-butyl methacrylate monomer, a glycidyl methacrylate monomer, a hydroxyethyl methylacrylate monomer or polyethylene glycol dimethacrylate. The invention further discloses a preparation method of the amphiphilic block copolymer.