Zobrazeno 1 - 10
of 679
pro vyhledávání: '"TAKEO SAEGUSA"'
Publikováno v:
Macromolecular Symposia. 183:53-64
This paper describes a new type of block copolymerization in which a block copolymer is produced with a one-shot feeding of monomers. The new block copolymerization is possible when the following prerequisites are met: (i) polymerization of two monom
Autor:
Takeo Saegusa, Norihito Toyota
Publikováno v:
Systems and Computers in Japan. 31:63-76
Publikováno v:
Proceedings of the Japan Academy, Series B. 75:49-53
The effects of the polarity of various water-immiscible organic solvents on the enzymatic esterification activities of three modified Candida cylindracea lipases, which were prepared by the chemical modification of lipase with poly[(N-acetylimino)eth
Publikováno v:
Macromolecules. 31:1716-1719
Hyperbranched dendritic polyamine consisting of primary, secondary (a nonbranching junction), and tertiary (a branching junction) amino moieties was produced by Pd-catalyzed decarboxylative ring-opening polymerization of 5-methyleneperhydro-1,3-oxazi
Publikováno v:
Angewandte Makromolekulare Chemie. 251:181-191
A new technique for imparting antistatic properties to poly(ethylene terephthalate) (PET) fiber has been developed. In this technique, blend polyester fibers containing poly(ethylene terephthalate/5-sulfoisophthalate) (SIP-PET) were prepared by blend
Publikováno v:
Angewandte Makromolekulare Chemie. 246:109-123
Copoly(amide-ethers) containing two types of tertiary amine units were made as antistatic modifiers for poly(ethylene terephthalate) (PET) fibers. The filaments of the copolymers were melt-spun and reacted with three alkylating agents in order to qua
Publikováno v:
Journal of Macromolecular Science, Part A. 34:35-48
Candida cylindracea lipase was modified by carboxylic-acid-terminated polymers having different molecular weights, i.e., poly[(N-acetylimino)ethylene] (2a), poly[(N-propionylimino)ethylene] (2b) and poly-[(N-sobutyrylimino)ethylene] (2c). The effect
Publikováno v:
Journal of Macromolecular Science, Part A. 34:123-132
Novel amphiphilic polymeric modifiers, i.e., block copolymers of 2-oxazolines containing hydrophobic and hydrophilic components (2), and homopolymers of 2-oxazolines having one hydrophobic unit at the polymer end (5), were prepared. Each of the polym
Publikováno v:
Biocatalysis and Biotransformation. 15:91-100
Candida cylindracea lipase was modified with a carboxylic acid-terminated polymer of poly[(N-propionyl)iminoethylene] (1, Mn = 4,280). Three samples of modified lipase (3) were prepared by changing the molar ratio of the N-succinimide activated ester
Publikováno v:
Angewandte Makromolekulare Chemie. 242:171-181
Block copoly(ester-ether)s containing different ionic units, i.e., sulfobetaine (S-betaine), carbobetaine (C-betaine), and ammonium tosylate, were prepared and evaluated as antistatic modifiers of PET fiber. The ionic units were readily derived from