Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1996-01-16
1998-07-07
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525267, 525270, 525313, 525918, 526135, 526146, 526147, 526204, 526209, 526216, 526217, 526222, 526221, 526237, 5263487, C08F 800, C08F 206, C08F 414, C08F 416
Patent
active
057770379
ABSTRACT:
The present invention provides a novel solvent which is capable of providing an excellent isobutylene polymer, little affects the environment, has a lower solubility in water than those of halogenated hydrocarbons having 1 or 2 carbon atoms and can be decomposed relatively easily. Namely, the present invention relates to: a process for producing an isobutylene polymer, which comprises performing a cationic polymerization reaction in a solvent containing primary and/or secondary monohalogenated hydrocarbon(s) having 3 to 8 carbon atoms, and an isobutylene polymer thus obtained; and a process for producing an isobutylene polymer having a vinyl group introduced into the terminal thereof, which comprises reacting the isobutylene polymer produced above with 1,9-decadiene or allyltrimethylsilane, and an isobutylene polymer thus obtained.
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"The Chemistry of Cationic Polymerization" Pergamon Press Ltd (1963), p. 133.
S. C. Guhaniyogi et al., "Carbocationic Polymerization in the Presence of Sterically Hindered Bases. III. The Polymerization of Isobutylene by the Cumyl Chloride/BC1.sub.3 System", J. Macromol. Sci.-Chem., A18(1), pp. 25-37 (1982).
G. Kaszas et al., "Electron pair donors in carbocationic polymerization", Polymer Bulletin 20, pp. 413-419 (1988).
Chiba Takeshi
Deguchi Yoshikuni
Fujisawa Hiroshi
Yamanaka Yoshimichi
Yonezawa Kazuya
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
Teskin Fred
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