Toa Nenryo Kogyo Kabushiki Kaisha

Tonen Corporation

Toa Nenryo Kogyo, K. K.

Tonen Chemical Corporation

Tog Nenryo Kogyo Kk (tonen Corporation)

Hiroyuki Furuhashi

Masafumi Imai

Hiroshi Ueno

Tadashi Yamamoto

Masahide Murata

Naomi Inaba

Satoshi Ueki

Kouji Maruyama

Akira Nakano

Naomi Koyama

Yoshiharu Doi

Seizaburo Kanazawa

Miyuki Usui

Shigeyuki Toki

Teruo Yashiro

Tetsuya Morioka

Naomi Murakami

Tomoko Okano

Naohiro Mikawa

Terminal-modified polyolefins

The object of the present invention is to provide such a polyolefin that only the terminal of polypropylene or ethylene-propylene random copolymer is modified with a (meth)acrylic derivative unit to give a substantially monodipersed system. The feature thereof consists in such a polyolefin that the terminal of polypropylene or ethylene-propylene random copolymer obtained by living polymerization is modified with a (meth)acrylic derivative unit. As the (meth)acrylic derivative, there are used vinyl methacrylate, allyl methacrylate, trimethylsiloxyethyl methacrylate, 2-trimethylsiloxypropyl methacrylate, N, N-dimethylaminoethyl methacrylate, N,N-diethylaminoethyl methacrylate, glycidyl methacrylate, acrylic acid chloride and like.

Terminal-modifed polyolefins

An ethylene polymer which Is capable of being degraded by microorganisms is provided which comprises a recurring unit represented by the general formula ##STR1## in which R is a divalent hydrocarbon group containing 2 to 20 carbon atoms, R' is a divalent hydrocarbon group containing 1 to 20 carbon atoms and A is a polyethylene segment comprising a recurring unit represented by the formula --CH.sub.2.CH.sub.2 -- and having a number average molecular weight (Mn) of 300 to 300,000, and the ethylene polymer having a number average molecular weight (Mn) of 500 to 5,000,000.

Biodegradable ethylene polymer having ester bonds in the main chain and

Polymers of olefins such as ethylene and propylene, having functional groups introduced into both the ends thereof, can be provided which are useful as macromonomers for polycondensation. This new polymer comprises a recurring unit represented by the general formula --(--CH.sub.2.CHR--)-- and having functional groups bonded to both the ends of the polymer and a number average molecular weight of 300 to 500,000, the functional groups being selected from the group consisting of H.sub.2 C.dbd.CH-- group and ##STR1## wherein X is --OH, --OR.sup.1, a halogen atom or --SO.sub.3 R.sup.2, R.sup.1 is a hydrocarbon group of 1 to 5 carbon atoms and R.sup.2 is a halogen-substituted or non-substituted hydrocarbon group of 1 to 20 carbon atoms.

Both ends-modified olefin polymers and processes for the production

Olefin polymerization catalyst

.alpha.-olefin polymerization catalyst component

Olefin polymerization catalyst component

Polymers of 1,7-octadiene wherein polymerization occurs simultaneously by 1,8- and 1,2-addition.

Octadiene polymer and process for producing the same

Polymers of 1,4-pentadiene having an Mw/Mn of 1.05 to 1.4 are produced by polymerizing 1,4-pentadiene in the presence of catalyst comprising a vanadium chelate compound and an organoaluminum compound.

Narrow molecular weight distribution hydrocarbon soluble homopolymer of

A catalytic component for olefin polymerization, produced by a process which comprises causing (A) magnesium metal, (B) a halogenated hydrocarbon represented by the general formula, RX [wherein R stands for an alkyl group, an aryl group, or a cycloalkyl group each having 1 to 20 carbon atoms and X for a halogen atom], and (C) a compound represented by the general formula, X.sub.n.sup.1 M(OR.sup.1).sub.m-n [wherein X.sup.1 stands for a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 20 carbon atoms, M for a boron, carbon, aluminum, silicon, or phorphorus atom, R.sup.1 stands for a hydrocarbon group having 1 to 20 carbon atoms, m for the valency of M, and m&gt;n.gtoreq.0] to contact (D) a halogen-containing alcohol and then contact (E) an electron donating compound and (F) a titanium compound thereby forming a titanium-containing solid substance, and causing said titanium-containing solid substance, in the presence of (G) an organic aluminum compound, to contact (H) an olefin thereby allowing said titanium-containing solid substance to incorporate therein a corresponding olefin polymer in a ratio in the range of 0.1 to 100 g per g of said titanium-containing solid substance.

Catalytic component for olefin polymerization

A heptadiene polymer comprising the repeating units ##STR1## and having a number-average molecular weight of 2,000-500,000.

Heptadiene polymer and process for producing the same

A method for the production of a catalyst carrier for use in the polymerization of an olefin, which method comprises causing a magnesium-containing solid obtained by contact of (A) magnesium metal, (B) a halogenated hydrocarbon represented by the general formula, RX [wherein R stands for an alkyl, aryl, or cycloalkyl group having 1 to 20 carbon atoms and X stands for a halogen atom], and (C) a compound of the general formula, X.sub.n.sup.1 M(OR.sup.1).sub.m-n [wherein X.sup.1 stands for a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 20 carbon atoms, M stands for a boron, carbon, aluminum, silicon, or phosphorus atom, R.sup.1 stands for a hydrocarbon group having 1 to 20 carbon atoms, and m stands for the valency of said atom M, providing that m&gt;n.gtoreq.0 is satisfied], to contact (D) a halogen-containing alcohol.

Method for production of catalyst carrier for polymerization of olefin

A catalyst component for the polymerization of olefins which is prepared by contacting a reaction product of dihydrocarbyl magnesium and a halogen-containing alcohol held in contact with a titanium compound.

Catalyst component for polymerization of olefins

A method for the production of a catalyst component for use in the polymerization of an olefin, which method comprises causing a magnesium-containing solid obtained by contact of (A) magnesium metal, (B) a halogenated hydrocarbon represented by the general formula, RX [wherein R stands for an alkyl, aryl, or cycloalkyl group having 1 to 20 carbon atoms and X stands for a halogen atom], and (C) a compound of the general formula, X.sub.n.sup.1 M(OR.sup.1).sub.m-n [wherein X.sup.1 stands for a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 20 carbon atoms, M stands for a boron, carbon, aluminum, silicon, or phosphorus atom, R.sup.1 stands for a hydrocarbon group having 1 to 20 carbon atoms, and m stands for the valency of said atom M, providing that m&gt;n.gtoreq.0 is satisfied], to contact (d) a halogen-containing alcohol and then contact (E) an electron donor type compound and (F) a titanium compound.

Growing community of inventors

Saitama, Japan

Hiroyuki Furuhashi