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JP3578540B2 |
A polyacetal resin composition which comprises about 100 parts by weight of a polyacetal having a residual fluorine concentration of not more than about 13 ppm and a concentration of formaldehyde generated when the polyacetal is heated a...
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JP2004530036A |
The present invention is directed to a powder coating composition that produces a low gloss coating upon cure. The powder coating composition includes one or more crosslinkable base polymer, a crosslinkable acrylic polymer and one or mor...
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JP2004269806A |
To provide a polyacetal resin composition that causes reduced deterioration in mechanical properties, frictional wear and surface appearance, when it is continuously used under a high temperature condition.This polyacetal resin compositi...
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JP2004156037A |
To provide a new copolyoxymethylenes and a method for producing the same, and to provide specifically a method for producing any type of moldings from the same.The copolymer comprises a polyoxymethylene block having a structural repeatin...
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JP2004155110A |
To provide a manufacturing method for a T-die cast film of a polyacetal which has good film formability in a T-die method, and can manufacture the T-die cast film with a thinner film thickness and excellent appearance at a lower cast rol...
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JP2004137415A |
To provide an extrusion molded product made of a polyacetal resin excellent in dimensional accuracy and surface appearance.The extrusion molded product made of the polyacetal resin is obtained by molding a polyacetal resin having 0.1-15....
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JP3504103B2 |
To obtain a polyalkylene oxide having no residual odor without using any special metal component by polymerizing an alkylene oxide compound in the presence of a polyphosphazene cation salt and an active hydrogen compound, or a salt of th...
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JP2004504473A |
The present invention relates to a method of coating substrates, including the following steps: a. applying a flowable coating composition to the target substrate and b. curing the resulting wet coating by exposure to high energy radiati...
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JP2004035862A |
To provide a photocurable resin composition with a low viscosity which can be fully cured to the interior in a short period of irradiation time.This photocurable resin composition comprises (A) a cyclic acetal compound, (B) an epoxy comp...
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JP2003342442A |
To provide a polyacetal resin composition having high stiffness, high dimensional stability and excellent creep characteristics. The composition is produced by blending 99.9-90 pts.wt. of (A) a linear polyacetal resin of a melt index of ...
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JP3470368B2 |
PURPOSE: To obtain a high-quality polymer having excellent heat stability in a prescribed polymerization degree in high yield by connecting two or more twin type reaction mixers having a self-cleaning function in series and controlling p...
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JP2003261741A |
To provide an oxymethylene copolymer composition having excellent color tone, antiaging property and mold-deposition property and provide a method for producing the copolymer composition.The oxymethylene copolymer composition is produced...
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JP2003219903A |
To provide a polyacetal resin fastener in which cracking characteristics occurring by impacts of a sewing-machine needle or the like in sewing is improved.This is the fastener having an entanglement row of teeth 4, top/bottom stopping fi...
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JP2003212942A |
To provide a blow injection molded article of a polyacetal resin excellent in appearance on the surface of the molded article and stability of its dimensions.The blow injection molded article comprises a polyacetal resin material wherein...
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JP2003522260A |
A continuous process for preparation of polyoxymethylenehomo- or copolymers by bulk polymerisation in the presence of a cationic initiator and optionally regulators, with the monomers and polymerizate in melted form during polymerisation...
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JP2003113216A |
To provide a polyoxymethylene polymer which has a new structure and is a polyoxymethylene derivative hopeful as an engineering resin.This polyoxymethylene polymer containing saturated hydrocarbon groups R in the main chain is obtained by...
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JP2003510374A |
This invention concerns a process for the copolymerization of formaldehyde with cyclic ethers, the process comprising combining in a hydrocarbon solvent a cyclic ether, a cationic initiator comprising an anion formed from tetraphenyl bor...
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JP3379827B2 |
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JP3370836B2 |
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JP3369365B2 |
Prodn. of acetal copolymers with simultaneous end gp. stabilisation is effected in homogeneous phase by copolymerising cyclic formaldehyde oligomers with cyclic acetal cpds. in a polymerisation reactor with addn. of a basic substance to ...
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JP3359748B2 |
Process for the continuous preparation of homo- and copolyoxymethylenes with stable terminal groups in the homogeneous phase, in which cyclic formaldehyde oligomers are polymerised in the presence of protic acids as initiators in amounts...
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JP2002363233A |
To obtain an oxymethylene copolymer having an excellent balance of color tone, heat stability and mechanical properties. This method for producing the oxymethylene copolymer is characterized in that, when an oxymethylene copolymer compri...
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JP2002320840A |
To provide an excellent dispersant used for detergents, a pigment dispersant, a scale dispersant, etc.The dispersant of this invention contains a hydroxyalkylamido- containing polyacetal.
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JP3339526B2 |
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JP2002309063A |
To provide a polyoxymethylene resin composition exhibiting good affinity and dispersibility of a polyoxymethylene resin and a polyolefin resin, having excellent dimensional stability, mechanical properties such as impact resistance and t...
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JP2002309062A |
To provide a polyoxymethylene resin composition exhibiting good affinity and dispersibility of a polyoxymethylene resin and a polycarbonate resin, having excellent dimensional stability, mechanical properties such as impact resistance an...
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JP2002309064A |
To provide a polyoxymethylene resin composition exhibiting good affinity and dispersibility of a polyoxymethylene resin and a styrene resin, a polycarbonate resin and a polyolefin resin, having excellent dimensional stability, mechanical...
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JP2002309061A |
To provide a polyoxymethylene resin composition exhibiting good affinity and dispersibility of a polyoxymethylene resin and a styrene resin, having excellent dimensional stability, mechanical properties such as impact resistance and ther...
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JP2002275227A |
To provide a polyacetal resin having high rigidity, excellent creep characteristics, high surface hardness and excellent sliding characteristics as well.This polyacetal copolymer is obtained by copolymerization between (A) 100 pts.wt. of...
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JP2002531629A |
Gel-forming condensation products of aldehydes or ketones can be used with polyols in cyanoacrylates to obtain dimensionally stable adhesives, coating and sealing substances. These are stable in storage and are especially suitable for bo...
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JP3326171B1 |
A polyoxymethylene having enhanced thermal stability and resistance to depolymerization is obtained by using an alkylated melamine compound of formula (1) as a polymerization terminating agent in a polymerization of formaldehyde or a cyc...
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JP2002530292A |
The present invention is directed to a process for coupling an adhesive glycoprotein to a surface of a bulk material comprising the following steps: a) a layer of a volatile aldehyde is deposited to the surface of the bulk material from ...
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JP3317761B2 |
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JP2002234924A |
To provide a polyacetal resin material improved particularly in sliding characteristic, while keeping inherent properties of polyacetal resin, such as excellent appearance, rigidity, heat stability, etc.This polyacetal copolymer is obtai...
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JP2002234923A |
To provide a polyacetal resin improved particulally in sliding characteristic, while keeping inherent characteristics of the polyacetal resin, such as excellent appearance, rigidity, heat stability, etc.This polyacetal copolymer is obtai...
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JP3315056B2 |
To obtain a block copolymer for cement dispersing agent, etc., having a polyalkylene glycol structural unit and a polyglyoxylate structural unit and excellent in dispersing property as well as chelate formability and scale preventing per...
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JP3311629B2 |
To obtain the subject copolymer produced from acrolein and a specific alcohol, capable of releasing acrolein over a long period in an aqueous system having pH of >7 and useful as a biocidal agent, etc. (A) Acrolein is added to (B) a poly...
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JP2002523489A |
(57) [Summary] The present invention relates to a method for producing formaldehyde by dehydrogenating methanol in a reactor while using a flow catalyst. After the reactor, the product gas is brought into contact with the melt in the coo...
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JP3309641B2 |
PURPOSE: To produce an oxymethylene copolymer having excellent thermal stability and high crystallization rate by using 1,3-dioxolan and trioxane as monomers. CONSTITUTION: An oxymethylene copolymer is produced by copolymerizing trioxane...
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JP3304391B2 |
PURPOSE: To provide a method, with which polyoxymethylene resin hollow molded article, sheet-like or bar-like molded article is efficiently manufactured, by a method wherein various problems taking with the blow molding or extrusion mold...
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JP3294779B2 |
To recover 1,3-dioxolane from an aqueous solution containing formaldehyde, trioxane, methanol and the 1,3-dioxolane by a simple and reasonable method. This method for recovering 1,3-dioxolane comprises recovering the 1,3-dioxolane from a...
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JP2002167415A |
To provide a method for producing a polyacetal resin excellent in the chemical permeation resistance.This resin is produced by using a cationic polymerization catalyst and performing the bulk polymerization of (a) 100 pts.wt. trioxane, (...
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JP2002155123A |
To provide a process for producing a crosslinked polyacetal resin which gives a uniform melt viscosity, scarcely forms fine insoluble matter, and has a stable quality.In producing a polyacetal resin having a crosslinked structure by cont...
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JP3285278B2 |
PURPOSE: To provide a reactor by using which the production of polyacetal homopolymers and copolymers can be performed in a simple procedure. CONSTITUTION: There is provided the apparatus being in the form of a stream pipe provided with ...
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JP2002511506A |
Moulding materials made of linear polyoxymethylene copolymers with essentially oxymethylene units and oxyethylene units as structural units in the polymer chain, whereby the proportion of oxyethylene units in the structural units of the ...
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JP2002114831A |
To provide a method for steadily producing a new polyoxymethylene having high cyclic formal concentration using a self-cleaning type biaxial stirring mixer.When 0.08-0.5 mol cyclic formal based on 1 mol trioxane are copolymerized in the ...
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JP3269776B2 |
To provide an efficient method for the deactivation of a catalyst for an oxymethylene copolymer after the polymn. An oxymethylene copolymer coming out of a polymerizer is ground with a grinder and subjected to a treatment for deactivatin...
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JP2002097241A |
To provide a polyacetal polymer with few unstable parts which deactivates a polymerization catalyst in a simple form, without needing complicated facilities.When a copolymer of a trioxane and a cyclic formal is polymerized by a cationic ...
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JP3269790B2 |
To provide a process for the production of a polyacetal copolymer having improved polymerization degree (molecular weight), stability, mechanical strength, etc., in improved polymerization yield while solving the problems such as thermal...
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JP2002506054A |
Process for the nonoxidative preparation of formaldehyde from methanol The invention relates to a process for preparing formaldehyde from methanol by dehydrogenation in a reactor at temperatures in the range from 300 to 1000° C. in the ...
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