Kureha Kagaku Kogyo Kabushiki Kaisha

Other

Kunizoh Kidoh

Hideki Wakamori

Fujio Suzuki

Hidetora Kashio

Kazuo Kusida

Eiichi Masuhara

Takao Iwasaki

Tohru Sasaki

Toshio Hosokawa

Mitsuru Ohta

Hiroyuki Endoh

Nobuo Bannai

Kamizo Iimura

Yoshio Kudo

Genzo Asai

Kazuo Kushida

A flexible monofilament of at least 0.08 mm in diameter excellent in transparency, high in impact strength and durability and showing a tensile strength of not less than 30 kg/mm.sup.2 and a modulus of elasticity of 60 to 120 kg/mm.sup.2, which is essentially composed of a vinylidene fluoride-based resin, a polymeric substance and a polyester plasticizer and is prepared by the process comprising the steps of:

Monofilament of improved vinylidene fluoride-based resin

A vinylidene fluoride resin composition which comprises 100 parts by weight of vinylidene fluoride resin and 0.1 to 10 parts by weight of glycidyl (meth)acrylate resin, said glycidyl (meth)acrylate resin being a polymer composed of at least one of glycidyl acrylate and glycidyl methacrylate, or a copolymer composed of a monomer selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate and ethyl methacrylate and at least one of glycidyl acrylate and glycidyl methacrylate. The resin composition has improved thermal stability and electrical properties, and is immune to deleterious discoloration.

Vinylidene fluoride resin composition containing glycidyl (meth)acrylate

Fine particles of polyvinyl chloride produced by bulk polymerization which comprise substantially discrete spherical particles with particle sizes of 0.2 to 2 microns, a plastisol prepared by adding 80 parts by weight of dioctylphthalate to 100 parts by weight of said particles having a viscosity of 50,000 centipoise or less (measured by a B-type viscometer, No. 4 rotor, 12 rpm, 25.degree. C.) and a process for producing the same which comprises subjecting vinyl chloride to bulk polymerization in the presence of a dispersing stabilizer under gentle stirring without causing sedimentation or agglomeration of the polymer particles formed, wherein polymerization is terminated at a polymerization yield of 5 to 30%.

Fine particles of polyvinyl chloride and process for producing the same

Disclosed herein are sheet for lining denture base prepared by molding a copolymer consisting of vinylidene fluoride units, tetrafluoroethylene units, hexafluoropropylene units and/or chlorotrifluoroethylene units in their mutual ratio within a predetermined range into shapes of sheets.

Sheet for lining denture base

A suspension polymerization of a haloethylene compound or a mixture of a haloethylene compound and a comonomer thereof is carried out in an aqueous medium containing a suspending agent and an oil soluble catalyst, by coating or incorporating at least one of a water soluble or organic solvent soluble lignin derivative.

Suspension polymerization of haloethylene compound

A synthetic resin for use in adhering polyvinylidene fluoride and polyvinyl chloride, the thus prepared composite material comprising polyvinylidene fluoride, the synthetic resin as an adhesive and polyvinyl chloride, and the methods for preparing the synthetic resin and the composite material are described as well as the composite material.

Synthetic resin for use as adhesive in preparing composite material

A plasticized vinylidene chloride-vinyl chloride copolymer is produced by copolymerizing 65 to 95 wt. % of vinylidene chloride and 35 to 5 wt. % of vinyl chloride or a mixture of vinyl chloride as a main component and a comonomer wherein 0.5 to 10.0 wt. parts of a plasticizer being soluble in said monomer mixture is added to 100 wt. parts of said monomer mixture and said monomer mixture is copolymerized by a suspension polymerization in the presence of an oil soluble radical initiator and a macromolecular suspending agent in water whereby a blending step can be eliminated.

Process for producing plasticized vinylidene chloride-vinyl chloride

Light-transmitting compositions containing (1) 50-99% by weight of polyvinylidene fluoride or a vinylidene fluoride copolymer and (2) 1-50% by weight of a copolymer of a vinyl fluoride monomer and at least one acrylate monomer selected from the group consisting of alkyl acrylates and alkyl methacrylates wherein the alkyl group contains from one to four carbon atoms.

Light transmitting polyvinylidene fluoride or vinylidene fluoride

A suspension of a particulate porous fluorinated resin in an aqueous medium containing a powder of an inorganic suspension stabilizer is heated approximately at a melting temperature of the resin whereby the resin is densified, the degree of densification of the resin depending on the heating temperature.

Densification of particulate porous fluorinated resins

From a synthesized high polymer latex, the unreacted monomer remaining therein can be removed efficiently by causing a hollow cylinder inclined by a gradient of 1/100 to 1/10 with reference to the horizontal plane to be rotated around its axis, then introducing the synthesized high polymer latex and a gas containing moisture into the interior of the hollow cylinder which is maintained in continuous rotation and allowing the latex and the gas to come into mutual contact within the hollow cylinder.

Method and apparatus for removal of unreacted monomer from synthesized

A process for suspension polymerization of vinyl chloride or a mixture of vinyl chloride and a monomer copolymerizable therewith in an aqueous medium in the presence of an oil-soluble polymerization catalyst is improved by the use of a suspending agent comprising a well known protective colloid and a saccharose alkyl ester.

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Iwaki, Japan

Kunizoh Kidoh