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JPH04272905A |
PURPOSE:To efficiently remove metal compds. from a specific polymer contg. them by mixing a poor solvent into a soln. of the polymer in a good solvent, heating and then cooling the mixture, and separating a polymer-contg. phase from the ...
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JPH04255928A |
PURPOSE: To obtain a stable high speed rotation and an excellent recording and reproducing characteristics and durability by containing at least one kind of cyclic polyolefine obtained by copolymerizing ethylene and cyclick olefine in th...
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JPH04249509A |
PURPOSE:To prepare a molding material which gives a pattern excellent in sensitivity, resolution, and contrast when exposed to a short-wave light by compounding a coal- or petroleum-derived resin comprising a polymer having reactive doub...
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JPH0452284B2 |
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JPH0450922B2 |
PURPOSE:A polymer being transparent and yet having a good balance among heat resistance, solvent resistance, dielectric characteristics and mechanical properties, prepared by (co)polymerizing a specified polycyclic monomer component with...
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JPH0449561B2 |
A process for the preparation of polyarylenes by the amine-catalysed elimination of carbonate groups from polymers which contain in the backbone thereof cyclohex-2-enylene rings bearing carbonate groups is disclosed. The products of the ...
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JPH04218517A |
PURPOSE:To obtain a new indene-containing multielement copolymer, consisting essentially of a polymerization component in inexpensive naphtha oil and maleimide, capable of designing the melting temperature for a desired value and useful ...
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JPH0448803B2 |
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JPH04189806A |
PURPOSE:To obtain the subject copolymer having excellent transparency, heat- resistance, dimensional stability and rigidity and useful as an optical material, etc., by copolymerizing ethylene with a specific cycloolefin in a solvent in t...
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JPH0437847B2 |
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JPH04161407A |
PURPOSE:To provide the subject composition containing plural kinds of copolymer of ethylene and a specific cycloolefin, having excellent moldability, transparency, heat-resistance, thermal aging resistance, chemical resistance, solvent r...
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JPH04161408A |
PURPOSE:To provide the subject composition containing plural kinds of copolymer of ethylene and a specific cycloolefin, having excellent transparency, precision moldability, heat-resistance, chemical resistance, dielectric characteristic...
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JPH04161438A |
PURPOSE:To provide a molded product having remarkably improved weather resistance, high hardness and scratch resistance and useful for building materials, automotive parts, etc., by coating a hydrogenated norbornene resin with a coating ...
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JPH04142309A |
PURPOSE:To obtain an alpha-olefin copolymer having specified properties by copolymerizing at least two monomers selected from among ethylene, a 3C or higher alpha-olefin and a diene compound in the presence of a specified olefin polymeri...
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JPH04130200A |
PURPOSE: To obtain the title powder which has a low bulk density and an improved hygroscopicity and is excellent in the workability in kneading with various resins, hand and physical properties by treating the surface of hide powder with...
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JPH0425304B2 |
Incorporation of an ester plasticizer having a solubility parameter from about 7.8 to about 10.2 (cal/cc)1/2 increases the flexibility and impact strength of poly(dicyclopentadiene). In a preferred embodiment of the method for poly(dicyc...
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JPH04106112A |
PURPOSE:To obtain an amorphous copolymer excellent in heat resistance, transparency, rigidity, etc., and moldability as well by copolymerizing a norbornadiene with a specified styrene derivative in the presence of a specified cationic po...
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JPH0480220A |
PURPOSE:To provide the title (co)polymer generating a small amt. of gel during molding and having excellent transparency, appearance, etc., by hydrogenating a (co)polymer prepd. by the metathesis polymn. of a specific norbornene deriv. a...
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JPH0414685B2 |
PURPOSE:A random copolymer excellent in transparency, heat resistance, thermal aging resistance, chemical resistance, solvent resistance, dielectric property and mechanical properties such as rigidity, comprising ethylene and a specified...
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JPH0463807A |
PURPOSE:To prepare a high-mol.-wt. norbornene polymer excellent in mechanical properties, heat resistance, transparency, etc., by polymerizing a norbornene monomer in the presence of a catalyst comprising a combination of a transition me...
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JPH0463810A |
PURPOSE:To prepare the title terpolymer giving a molded item excellent in mechanical, optical, and thermal characteristics by subjecting a specific (meth) acrylic ester, a compd. having a norbornene backbone, and a compd. radical- polyme...
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JPH049812B2 |
A high impact strength, high modulus thermoset homopolymer is formed by the metathesis-catalyzed polymerization of dicyclopentadiene. In a preferred embodiment of the synthesis two parts of a metathesis-catalyst system, a catalyst/monome...
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JPH0445113A |
PURPOSE:To efficiently obtain the subject copolymer, having a high molecular weight and excellent in mechanical properties, heat resistance, transparency and fluidity by copolymerizing a norbornene-based monomer with a styrene- based mon...
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JPH045179B2 |
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JPH0420553A |
PURPOSE:To improve transparency and resistance to moisture, chemicals, heat, and thermal aging by compounding a specific high-melting cyclic olefin radom copolymer with a low-melting cyclic olefin random copolymer. CONSTITUTION:100 pts.w...
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JPH047307A |
PURPOSE:To prepare the title copolymer having properties similar to those of a flexible resin, and increased resistances to heat (thermal aging), chemicals and solvent, improved optical characteristics, and improved moldability by specif...
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JPH0377205B2 |
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JPH03258814A |
PURPOSE:To use an inexpensive and readily handleable catalyst component and readily obtain a cyclic olefin polymer at a low cost by polymerizing a cyclic olefin using the catalyst consisting essentially of a specific transition metal com...
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JPH03255101A |
PURPOSE:To obtain a random copolymer having a decreased polyethylene content and excellent transparency in good efficiency by copolymerizing ethylene with a specified cycloolefin under a specified agitation condition in the presence of a...
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JPH03255104A |
PURPOSE:To obtain a cyclodiene polymer excellent in moldability and heat resistance in high yields by polymerizing a cyclodiene in the presence of a catalyst based on a specified transition metal compound component and an aluminoxane com...
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JPH03255107A |
PURPOSE:To produce the title copolymer having a decreased content of foreign matter and improved transparency by drying pellets obtained by pelletizing a specified random cycloolefin copolymer and separating a fine powder from the dried ...
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JPH03255106A |
PURPOSE:To obtain the title copolymer having a decreased PE content and improved transparency by filtering a specified random ethylene/cycloolefin copolymer solution. CONSTITUTION:A polymer solution prepared by dissolving 20-40g/l of a r...
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JPH03240741A |
PURPOSE: To easily obtain at a low cost high-purity dicyclopentadiene useful as a raw material for reaction injection molding technique using a metathesis catalyst by bringing crude dicyclopentadiene into contact with a solid acid such a...
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JPH03232303A |
PURPOSE: To make formability easy and to improve the strength of adhesion between respective layers by forming a parabolic antenna reflector by laminating a resin metal protection layer, metal layer and backup layer composed of a specifi...
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JPH0357139B2 |
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JPH03188110A |
PURPOSE:To prepare the title copolymer which does not corrode a molding machine by copolymerizing ethylene with a cyclic olefin in the presence of a specific catalyst and then bringing the resulting copolymer soln. into contact with a me...
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JPH03188145A |
PURPOSE:To obtain the title thermoform excellent in the resistance to heat, chemicals and impact, etc., by using a ring-opening (co)polymer obtained by polymerizing a specified cycloolefin through ring opening or a product of hydrogenati...
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JPH03172308A |
PURPOSE:To obtain the title copolymer with each specific composition, intrinsic viscosity, molecular weight distribution, glass transition temperature and degree of crystallinity, excellent in transparency, heat resistance, chemical resi...
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JPH03172312A |
PURPOSE:To obtain the title copolymer excellent in transparency, heat resistance, dielectric properties, etc., narrow in both molecular weight distribution and composition distribution by copolymerization between ethylene and a cyclic ol...
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JPH0346451B2 |
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JPH0346002B2 |
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JPH0339527B2 |
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JPH0337568B2 |
A process for bulk polymerizing a norbornenetype monomer, or a mixture thereof, that includes the steps of mixing the monomer with an organoammonium molybdate or tungstate catalyst and an alkoxyalkyl aluminum halide cocatalyst at a tempe...
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JPH03122105A |
PURPOSE:To obtain a non-ring opening polymer having excellent optical activity and heat resistance without ring-opening of norbornene ring by polymerizing a specific horbornene derivative with a vinyl compound in the presence of a cataly...
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JPH0332569B2 |
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JPH03100005A |
PURPOSE:To effectively prepare a condensed ring compound polymer which is transparent, non-discoloring, and radiation-resistant by polymerizing a compd. contg. an indene ring or a compd. contg. a condensed carbocyclic ring contg. an inde...
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JPH0328451B2 |
A method of making a thermoset polydicyclopentadiene by first combining a plurality of reactant streams, one containing the activator of a metathesis-catalyst system, a second containing the catalyst of a metathesis-catalyst system and a...
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JPH0324504B2 |
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JPH0347814A |
PURPOSE:To obtain the subject novel copolymer producible on an industrial scale at a low cost and useful as a resin modifier, etc., for imparting heat- resistance to PVC resin, etc., by copolymerizing a maleimide with a polymerizable com...
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JPH0314805A |
PURPOSE:To obtain an optical material excellent in transparency, optical properties, heat and chemical resistances, dimensional stability and mechanical properties by utilizing a copolymer of a specified polycyclic monomer with ethylene....
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