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JP3850548B2 |
To provide a continuous production method of a polyactal resin which enables an industrial and stable production of the polyacetal resin for a long term. A continuous production method of a polyacetal resin by bulk polymerization of (A) ...
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JP2006526054A |
A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising as upstream vent and/or a side feeder vent to allow flash evaporation of the ...
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JP3847007B2 |
To obtain a grafted polyoxymethylene resin which gives a product reduced in a tendency toward warpage and being excellent in mechanical properties as well as in slidability, appearance, etc., by grafting polyoxymethylene onto inorganic m...
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JP2006306992A |
To provide a polyoxymethylene resin composition having excellent low temperature impact resistance and sliding properties and injuring neither molding externals nor rigidity, to provide moldings thereof and to provide components thereof....
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JP2006524648A |
The invention relates to initial compounds for producing polyurethanes and is characterised in that said polyurethanes can be produced by reaction of hydroxyl group containing formaldehyde oligomers.
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JP2006291001A |
To provide a method for efficiently and economically producing polyacetal reduced in formaldehyde content, scarcely causing yellowing and contamination of molds.The method for producing the polyacetal resin composition reduced in formald...
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JP2006282666A |
To provide a simple and economic process for preparation of diphenylmethane based di- and/or polyamine in which the formation of undesirable isomers, homologues or by-products is prevented or suppressed.The invention relates to the proce...
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JP2006282903A |
To provide a polyoxymethylene resin composition having excellent impact resistance without damaging appearance of its molding, its molding, and its part.This polyoxymethylene resin composition contains 5-60 parts by weight modified olefi...
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JP2006232890A |
To provide a water-absorbing, biodegradable crosslinked polymer which undergoes sufficient biodegradation when left in soil after use.The polymer comprises a copolymer of (A) cyclic ketene acetals and (B) a hydrophilic crosslinkable mono...
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JP3819118B2 |
To improve rotation transmission accuracy, torque transmission capacity, and the durability of these characteristics of a gear made of a resin by using polyoxymethylene copolymer as a resin material. A gear made of a resin is made of a r...
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JP2006519172A |
Process for preparing high-concentration formaldehyde solutions having a CH2O content of >=50% by weight from an aqueous formaldehyde solution having a lower CH2O content by evaporation of part of this solution (partial evaporation), in ...
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JP2006519174A |
A method for separating a liquid mixture containing readily-volatile and sparingly-volatile components involves using a film evaporator with a heat-exchange surface which is coated with material which catalyses the formation of readily-v...
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JP2006193639A |
To provide a trioxane-ethylene oxide copolymer having a reduced content ratio of a dioxyethylene unit and a trioxyethylene unit and to provide its manufacturing method.The trioxane-ethylene oxide copolymer is obtained by continuously sup...
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JPWO2004096881A1 |
Provided is a resin material made of a polyoxymethylene resin, which has a small strain and an excellent dimensional accuracy and has a deformed cross section, and is suitable for manufacturing a molded product. A polyoxy containing 1.5 ...
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JP3771008B2 |
To provide a method for producing a branched or crosslinked polyacetal resin excellent in both blow moldability and impact resistant characteristics such as a surface impact strength, further excellent in smoothness on the inner surface ...
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JP2006104283A |
To provide a polyester resin composition excellent in combustibility and excellent in mechanical characteristics.This polyester resin composition is formed by mixing not less than 0.5 pt.wt and less than 100 pts.wt. of a polyacetal resin...
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JP2006096899A |
To provide a method for continuously producing at a high yield an oxymethylene copolymer having a high polymerization degree and excellent thermal stability.The method for producing oxymethylene copolymer comprises using one or more of s...
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JP2006070099A |
To provide a continuous production method of a modified polyacetal resin, which can produce the same that has a high introduction ratio of a modifying component and excels in quality, with a high yield and in an industrially stabilized m...
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JP3755944B2 |
To obtain a polyoxymethylene copolymer molding material having a good surface appearance and a high heat stability. This polyoxymethylene copolymer molding material is obtained by copolymerizing trioxane with 1,3-dioxolane under conditio...
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JP2006056925A |
To provide a polyacetal resin composition excellent in dimensional stability and mechanical strength.The composition comprises 100 pts. wt. of a polyacetal resin (a) and 0.5-100 pts. wt. of a polyester resin (b) in which 70-100 mol% of t...
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JP2006504990A |
An ophthalmic lens made from a crosslinkable polymer containing H-active groups bonded to the oligomer or polymer backbone, some or all of whose hydrogen atoms have been substituted by radicals of a N-hydroxyalkyl (meth)acrylamide. The l...
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JP2006028364A |
To provide a method for producing a polymer containing a monomer unit represented by -CF2O- and to provide a new polymer and a pellicle essentially composed of the polymer.The method for producing the polymer containing a monomer unit re...
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JP2005344028A |
To provide a polyoxymethylene copolymer which maintains the original mechanical characteristics of polyoxymethylene resin and simultaneously has excellent scratch resistance.This oxymethylene copolymer contains ≥2C oxyalkylene units as...
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JP2005320373A |
To provide a polyoxymethylene resin composition which can give a molding having excellent impact resistance as well as unimpaired appearance, to provide a molding thereof, and to provide a part made therefrom.The resin composition is a p...
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JP2005314479A |
To provide a method for producing an oxymethylene crude copolymer of high thermal stability with high polymerization degree and in high yield.The method for producing the oxymethylene copolymer comprises carrying out a mass copolymerizat...
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JP3714579B2 |
To provide a method for producing an oxymethylene copolymer composition excellent in thermal stability and containing carbon black dispersed therein with a good uniformity at a good economical efficiency. A polymerization catalyst deacti...
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JP2005307162A |
To obtain a highly sensitive active ray-curing composition forming a highly hard and flexible coating film under various printing circumstances, especially even under a highly moist environment, low in viscous and high in sensitivity, an...
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JP3706407B2 |
PURPOSE: To obtain a modified polyacetal improved in affinity without causing any decrease in molecular weight and without detriment to other properties easily at good efficiency by using a polymerizable polyacetal having a specified pol...
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JP3706024B2 |
To provide a polyoxymethylene resin composition to which a durability and a high damping characteristic are imparted simultaneously without impairing superior friction and abrasion properties of the polyoxymethylene resin. This polyoxyme...
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JP2005272707A |
To provide a copolyoxymethylene superior in heat stability.This method for manufacturing the copolyoxymethylene comprises steps of melting a raw copolyoxymethylene using an extruder (A) having a kneading portion of a length of 2D1-10D1 (...
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JP2005264101A |
To improve high-temperature resistant creep characteristics at a high level without substantially deteriorating molding processing characteristics of a polyacetal resin at all.The polyacetal resin has 10-100 wt.ppm of the total amount of...
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JP2005264355A |
To provide a method for producing a drawn product made of a polyoxymethylene resin and having high strength and a high elastic modulus with good production efficiency.This method for producing the drawn product made of the polyoxymethyle...
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JP2005256189A |
To provide a twist yarn made of a polyoxymethylene resin having excellent durability and high strength/high modulus.The twist yarn made of the polyoxymethylene resin is obtained by twisting a plurality of single yarns or multifilaments c...
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JP2005527663A |
A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I [CpvMLw]m+Zm/nn- (I) where M is Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, Fe, Ru, Os, Co, Rh or Ir, Cp is a cyclop...
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JP2005527664A |
A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I [ML1aL2b]cm+Zc.m/nn- (I) where M is a metal of group VIII; L1 is a ligand having at least one pi-electron pair; ea...
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JP2005526880A |
A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I where M is TiO, ZrO, HfO, VO, CrO2, MoO2, WO2, MnO2, ReO2, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Zn, Cd, Hg, Sn, SnO...
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JP2005232394A |
To provide a method for producing a polyoxymethylene copolymer which releases little formaldehyde gas in a molding machine.The method for producing a polyoxymethylene copolymer comprises bringing a crude polyoxymethylene copolymer with a...
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JP2005232404A |
To provide a polyacetal resin composition that is high in toughness and has repeated flexural fatigue properties and to provide a molded article formed from the polyacetal resin composition.The polyacetal resin composition is produced by...
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JP2005523950A |
A new class of amines is incorporated into phtopolymerizable systems employing type I or type II photoinitiators. These amines are trialkylamines having a total of 10 to about 36 carbon atoms in the molecule and wherein at least one alky...
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JP2005208046A |
To reduce defects caused by uneven curing of an ultraviolet curable resin or the presence of an uncured part by measuring the time change of the cured state of the reactive curable resin as a surface image, and optimizing the optimum cur...
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JP3677353B2 |
To produce an alloy of an olefinic polymer with a polyacetal resin which has improved mechanical properties, heat resistance, surface hardness, and frictional and abrasion properties. A polyacetal resin (A-1) in an amt. of 100 pts.wt. is...
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JP2005520901A |
The present invention relates to a process for grinding a plastic material to produce superfine particles and compositions, such as suspensions and dry powders, resulting from such process. Common ice is the abrasive for grinding.
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JP2005520007A |
Compositions that can be photopolymerized by a cationic initiator at an accelerated rate include at least one epoxy monomer, at least one cationic photoinitiator, and a photosensitizer/accelerator. The accelerator is a phenolic resole, o...
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JP2005182041A |
To provide a toner composition which does not require an overcoat applied on the toner ex post facto and has excellent friction resistance and solvent resistance and a method for manufacturing the same.The toner composition includes a po...
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JP3664527B2 |
To reduce the crack of a penetration part made of a polyacetal type resin by allowing a hard member to penetrate into a molded product made of a polyacetal type resin based on a polyacetal resin having a specific m.p. A hard member is al...
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JP2005146249A |
To provide a method for removing porogen from a temperature-sensitive macroreticular polymer, using steam under reduced pressure.The improved method for producing a resin comprises conducting steam stripping of the porogen from the polym...
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JP2005132896A |
To provide a vacuum molded article which comprises a polyoxymethylene resin, is little distorted, and has a desired shape.This polyoxymethylene resin vacuum molded article comprises a polyoxymethylene copolymer which contains oxyalkylene...
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JP2005042015A |
To provide an electrolytic film having a gas-barrier property and heat resistance, enabling action under low moisture atmosphere and capable of keeping a proton conductivity even when used over a long period in the presence of water.Cond...
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JP3615273B2 |
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JP2005013829A |
To provide a polyoxymethylene resin-made filter which can be commercially manufactured with high productivity and has mechanically excellent physical properties and excellent chemical resistance.This polyoxymethylene resin-made filter is...
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