Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kanegafuchi Chemical Industry Co., Ltd.

Kaneka Corporation

Kazuya Yonezawa

Masahiro Asada

Yoshikuni Deguchi

Hiroshi Iwakiri

Masaaki Azuma

Hisao Furukawa

Takahisa Iwahara

Hiroshi Fujisawa

Miyuki Matsuura

Hirosaku Nagano

Haruo Tomita

Yoshimichi Yamanaka

Kazunari Iwamoto

Tomoko Takahara

Yasushi Kato

Hiroshi Wakabayashi

Kazuaki Kira

Makoto Chiba

Junji Takase

Hiroshi Ando

Takeshi Chiba

Hiroshi Ito

Shigeki Hamaguchi

Hideki Kawai

Jun Kotani

Koji Noda

Shigeru Hagimori

Naoaki Nakanishi

Kouji Noda

Kazuhiko Tamai

Tadashi Osawa

Junichi Ishizu

Miyuki Azuma

Kazumasa Hashimoto

Kensuke Kondo

Hisao Furkawa

Koji Tsuneishi

Hiroshi Iwarkiri

Osamu Takamatu

Syun Wachi

Yasuo Okamoto

Jun Hattori

Kiyoshi Andoh

Makato Chiba

Hydrosilylation process and polymers produced by the process

The present invention provides a novel halogen-free solvent system which can produce a good isobutylene polymer and can be easily reused. A novel process for the production of an isobutylene polymer is provided which comprises using a hydrocarbon solvent having a boiling point of not lower than 105.degree. C. and a melting point of not higher than -90.degree. C. Heretofore, a solvent system containing a halogenated hydrocarbon such as methylene chloride has been used for the production of an isobutylene polymer. However, such a solvent system has a great adverse effect on the environment. Therefore, a non-halogenated solvent is desirable. The present invention is characterized by the use of a hydrocarbon solvent as a reaction solvent. The resulting polymer has good properties. Further, compounds which are produced as by-products during the reaction can be easily removed, enabling the recycling of the solvent used. Thus, the production cost can be reduced.

Process for producing unsaturated group-terminated isobutylene polymer

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.

Process for producing isobutylene polymer

The present invention provides a polyvinyl graft-polymer having one structural unit having a glycidyloxy group represented by the following general formula (I) at side chains of the polyvinyl polymer per 2-1,000 repeating units of vinyl: ##STR1## wherein Ar represents an aromatic hydrocarbon group 6-23 in carbon number having at least one glycidyloxy group, and R represents hydrogen atom or methyl group, and its manufacturing method. The polyvinyl graft-polymer of the present invention is excellent not only in mechanical properties and heat resistance, but also in adhesiveness, paintability dyeability and antistatic property.

Polyvinyl graft-polymers and manufacturing method thereof

Foaming resin composition, plastic foam formed from the composition, and

Curable organic polymers containing hydrosilyl groups

A curable composition which comprises (C) a non-polymeric organic curing agent having at least two hydrosilyl groups in a molecule, (D) an organic polymer having at least one alkenyl group in a molecule, and (E) a hydrosilylation catalyst has rapid curability and good depth curability, and gives a homogeneous cured material having good mechanical properties.

Curing agent, preparation thereof and curable composition comprising the

A curable composition containing (A) a compound having at least two Si--H bonds, (B) a silicon compound having at least two substituents bonded to the silicon atom thereof, wherein the substituents each have an olefin bond, (C) a neutral platinum catalyst, (D) a silicon compound having at least two alkoxy groups bonded to the silicon atom thereof, and (E) a catalyst for silanol condensation.

Curable composition

Modified polyolefin polymer, its manufacturing method and resin

An isobutylene polymer having an unsaturated group and comprising more than one unit per molecule on the average of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and each a hydrogen atom or a C.sub.1 -C.sub.8 alkyl group, R' and R' are the same or different and each a hydrogen atom, a methyl group or an ethyl group, and Q is a C.sub.1 -C.sub.30 divalent organic group, which provides a cured material having improved weather resistance.

Isobutylene polymer having unsaturated group and preparation thereof

An isobutylene base polymer with a functional group having repeating units derived from isobutylene and at least one unit of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom, a methyl group or an ethyl group and R.sup.2 is a divalent organic group, and a number average molecular weight of 500 to 500,000.

Isobutylene base polymer having functional group and process for

An aromatic polyestersulfone having improved heat resistance, film-forming property, hydrolysis resistance and mechanical strength which comprises 1 to 100% by mole of recurring units of the general formula: ##STR1## and 99 to 0% by mole of recurring units of the general formula: ##STR2## wherein R and R' are the same or different and each is an alkyl or alkoxyl group having 1 to 4 carbon atoms, Ar is a bivalent aromatic group, and x and y are 0 or an integer of 1 to 4 provided that the sum of x and y is from 1 to 8.

Heat-resting aromatic polyestersulfone and process for preparing the same

This invention relates to processes for producing an olefin-terminated polyester. In one of the processes which comprises reacting an olefin-terminated diester compound with a lactone in the presence of a polymerization catalyst with transesterification ability, the lactone is in a limited amount added to the reaction system. In another process which comprises reacting an olefin-terminated diester compound, a lactone compound, a cyclic acid anhydride and an epoxy compound in the presence of a polymerization catalyst with transesterification ability, the lactone, cyclic acid anhydride and epoxy compound are each in a limited amount added to the reaction system. In accordance with this invention, olefin-terminated polyesters having high terminal modification rates can be synthesized.

Process for production of olefin-terminated polyesters

An aromatic polyester film containing about 0.05 to 0.5% by weight, based on the weight of aromatic polyester resin, of a Group ITA alkaline earth metal orthophosphate powder composed mainly of particles having a particle diameter of about 1 to 10 .mu.m.

Aromatic polyester film containing orthophosphate powder

Growing community of inventors

Kobe, Japan

Kazuya Yonezawa