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JP7223799B2 |
Provided is a production method for a polyacetal resin composition containing prescribed amounts of each of: (B) a prescribed modified olefin polymer, (C) a prescribed alkylene glycol polymer, (D) a prescribed calcium carbonate, (E) a pa...
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JP7222678B2 |
The purpose of the present invention is to provide a polyacetal resin composition which has improved mechanical properties.　The present invention has been achieved by a polyacetal resin composition which is obtained by mixing 0.1-100 p...
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JP2023015897A |
To provide a method for simply at high yield, producing polyoxymethylene low in content of low molecular weight component.Disclosed is a method for producing polyoxymethylene by polymerizing at least one monomer selected from the group c...
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JP7210194B2 |
The purpose of the present invention is to provide a polyacetal resin composition which exhibits improved strength and long term heat resistance without compromising heat resistance quality such as the amount of formaldehyde generated up...
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JP2023005058A |
To provide a polyacetal resin-made gear which is excellent in fatigue resistance characteristics.A polyacetal resin-made gear is formed of a polyacetal resin or a resin composition containing a polyacetal resin, wherein the polyacetal re...
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JP7194851B2 |
To provide polyacetal powder which can be used in additive manufacturing technology, can provide a molded article having high mechanical properties, and has, at high temperature, an excellent lamination property and excellent powder accu...
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JP7185752B2 |
Polyoxymethylene, where a ratio of a low molecular weight component having a molecular weight of 10,000 or less in a molecular weight distribution is 7.0 % or less of the total, and the molecular weight distribution is obtained by measur...
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JP7179046B2 |
A method for producing a polyacetal copolymer comprises a step for copolymerizing 100 parts by mass of trioxane (A), 0.05-5 parts by mass of a cyclic acetal compound (B) that has an oxyalkylene group having at least 2 carbon atoms in the...
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JP2022167799A |
To provide a polyoxymethylene resin composition having high gas impermeability.A polyoxymethylene resin composition contains (a) a polyoxymethylene polymer and (b) a tungsten compound. The (a) polyoxymethylene polymer has its terminals a...
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JP2022161668A |
To provide a polyoxymethylene that is excellent in degreasing and shape-retaining properties.The present invention discloses a polyoxymethylene. When the temperature of the polyoxymethylene is raised at a constant rate from 30°C to 500Â...
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JP7149380B1 |
A polyacetal resin composition and a resin gear having excellent durability, mechanical properties, and sliding properties are provided. [Solution] (A) A linear polyacetal copolymer containing oxymethylene units as a main component, cont...
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JP7144681B2 |
Provided herein are poly-1-hydroxymethylethylene hydroxymethyl formal (PHF)-based drug delivery systems. Also disclosed are methods of making antibody-drug conjugates and methods of treatment using these conjugates.
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JP7141329B2 |
The objective of the present invention is to provide: a novel polyacetal copolymer having excellent productivity and mechanical properties by introducing a group having a new structure; and a method for producing the same. The objective ...
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JP7141330B2 |
The purpose of the present invention is to provide a polyacetal resin composition having an improved level of mechanical properties. The purpose of the present invention is achieved by a polyacetal resin composition that can be obtained ...
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JP7131712B2 |
It has been desired to develop a method for producing an oxymethylene copolymer resin composition, by which a resin composition comprising an oxymethylene copolymer having a high degree of polymerization can be produced at a high yield, ...
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JP7129284B2 |
The purpose of the present invention is to provide: a novel polyacetal copolymer which is excellent in terms of production efficiency and mechanical property due to introduction of a group having a new structure; and a production method ...
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JP2022121962A |
To provide a production method of an oxymethylene polymer capable of producing an oxymethylene polymer in a polymerization vessel continuously and stably.A method for continuously producing an oxymethylene polymer includes an introductio...
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JP2022113989A |
To provide a polymer that gives a cured product having low dielectric constants and dielectric loss tangents and having excellent dielectric properties.The inventive polymer contains a constitutional unit represented by a following gener...
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JP7101061B2 |
To provide polyacetal powder which can be used in additive manufacturing technology, can provide a molded article having high molding precision and high mechanical properties, and has an excellent lamination property.The polyacetal powde...
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JP7096043B2 |
The purpose of the present invention is to provide a method for producing a polyacetal copolymer, in which any disturbances in mass production less affect the polymerization. The method is for producing a polyacetal copolymer from trioxa...
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JP7092381B2 |
Provided are a phosphazene compound, a method for preparing a phosphazene compound and a method for producing a polymer with a phosphazene compound as a catalyst. The compound of formula (I) or a solvate thereof, where A is a six- or eig...
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JP2022087992A |
To provide a resin composition in which the occurrence of void and whitening is suppressed and a b value is low, and to provide an extrusion-molded body.A resin composition is an extrusion-molding resin composition that contains a polyac...
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JP2022085268A |
To provide a stretched polyoxymethylene having high mechanical strength and a method for producing the same.The inventive stretched polyoxymethylene has a melting point of 175°C or higher.SELECTED DRAWING: None
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JP7081604B2 |
The present invention addresses the problem of providing a method for manufacturing an oxymethylene copolymer in which the amount of formaldehyde generated from a product thereof is reduced; in particular, the amount of formaldehyde gene...
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JP7078687B2 |
A polyacetal resin composition contains a polyacetal copolymer (A) in an amount of 100 parts by mass, the polyacetal copolymer resin having a hemiformal terminal group amount of 0.8 mmol/kg or less, an antioxidant (B) in an amount of 0.5...
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JP7076301B2 |
To provide polyacetal powder which can be used in additive manufacturing technology, can provide a molded article having high mechanical properties, and has, at high temperature, an excellent lamination property and excellent powder accu...
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JP7061479B2 |
The purpose of the present invention is to provide a polyacetal copolymer and a polymerization method having excellent production stability and heat stability such as the amount of formaldehyde generated while maintaining the level of ri...
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JP7057113B2 |
The present invention relates to a resin composition and a resin molded body, particularly a resin composition and a molded body which simultaneously satisfy excellent thin wall moldability and high slidability, and more particularly a r...
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JP7053199B2 |
To provide a resin composition achieving both of excellent thin wall moldability and high rigidity at the same time, having high thermal stability during molding as well.A resin composition comprises 100 pts.mass of polyacetal resin (A) ...
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JP2022054852A |
To provide a polyacetal copolymer which has excellent rigidity, creep resistance characteristics and the like and also has thermal stability and the like, and a method for stably producing the same.The method for producing the polyacetal...
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JP7036025B2 |
The present invention addresses the problem of providing a method for producing an oxymethylene copolymer, which is capable of producing an oxymethylene copolymer having a high molecular weight with high yield and high economic efficienc...
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JP2022041925A |
To provide an underlayer composition and a patterning method.An underlayer composition contains a polymer having a repeat unit of formula (1) (where Ar is a monocyclic or polycyclic C5-60 aromatic group, the aromatic group includes one o...
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JP7014347B1 |
The present invention is a method for producing an oximethylene copolymer resin composition, wherein Mn micromolar amine-substituted triazine per gram of the oxymethylene copolymer (A) is relative to the oximethylene copolymer (A). Oxida...
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JP6992144B1 |
To provide a method for producing a polyacetal copolymer having a good appearance of a molded product made of a polyacetal copolymer and having a small variation among products without making any special equipment change in the current m...
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JP2022501453A |
The method for forming stabilized paraformaldehyde is to heat a formaldehyde solution containing 30 wt% or more formaldehyde to a temperature in the range of about 70 ° C to about 130 ° C; the formaldehyde solution is polymerized with ...
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JP2021178944A |
To provide a mechanism component containing a polyacetal resin composition, which can prevent cracking even when receiving stress for a long time under a high temperature environment while it is coated with grease.A mechanism component c...
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JP2021526183A |
The present invention is a colored polyoxymethylene produced by mixing an untreated polyoxymethylene copolymer in the form of particles containing 2 to 30% by mass of unreacted residual monomers and a colorant in the form of particles in...
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JP6941122B2 |
The invention relates to a thermally insulated conduit pipe, comprising at least one medium pipe, at least one thermal insulation arranged around the medium pipe, and at least one outer jacket arranged around the thermal insulation, wher...
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JP6938180B2 |
To provide a method for producing a polyacetal copolymer that makes it possible to obtain a polyacetal copolymer having high thermal stability while operating or using stably a polymerization reaction device.The present invention provide...
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JP6934857B2 |
The present invention is to provide a process for producing an oxymethylene copolymer, in which deteriorate due to oxidation hardly occurs, an amount of formaldehyde generated from the product, in particular, an amount of formaldehyde ge...
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JP2021127451A |
To provide a method for producing a binder composition using lignin.The method comprises: i) preparing an ingredient crushed lignin agglomerates, where at least 90 wt.% of the crushed lignin agglomerates have particle size of at most 10 ...
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JP6931312B2 |
The invention relates to a polyacetal, and provides a polyacetal resin composition which has excellent impact resistance, mechanical properties and dimension stability. The composition is characterized in that the composition includes 10...
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JP6913443B2 |
To provide a polyacetal copolymer having a stabilized terminal that shows excellent heat stability, less coloring and less foreign matter.A method for producing a polyacetal copolymer includes the terminal stabilization of (A) a polyacet...
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JP2021109948A |
To provide a polyacetal copolymer extrusion method that achieves reduced adherents to an extruder screw.The present disclosure provides a method for extruding a polyacetal copolymer using an extruder and a gear pump provided at the rear ...
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JP6891652B2 |
To provide a biaxial extruder used for manufacturing an oxymethylene copolymer, capable of effectively degassing formaldehyde, and a manufacturing method of the oxymethylene copolymer.A first biaxial extruder 100 mainly has a cylinder 11...
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JP6886784B2 |
To provide a polyacetal resin that has low volatility, and also has reduced occurrences of MDs (mold deposits) and bleeding.In a polyacetal resin, in a crystal structure measured by pulse NMR, the percentage of a crystal phase is 45 wt%-...
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JP6886785B2 |
To provide a polyacetal resin that has low volatility, and also has reduced occurrences of MDs (mold deposits) and bleeding.In a polyacetal resin, in a crystal structure measured by pulse NMR, the relaxation time of an intermediate phase...
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JP6877226B2 |
A process by which the raw material, a gas comprising mainly hydrogen, carbon monoxide and carbon dioxide is introduced into a first reactor together with a catalyst, in which one or more reactions take place that produce methanol or dim...
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JP6874917B1 |
A method for producing an oxymethylene polymer, which can produce an oxymethylene polymer having a high degree of polymerization with high efficiency while suppressing an increase in the amount of odor generated, has been awaited. Furthe...
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JPWO2020054730A1 |
The ratio of low molecular weight components having a molecular weight of 10,000 or less in the molecular weight distribution obtained by gel permeation chromatography (GPC) using polymethylmethacrylate (PMMA) as a standard substance is ...
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