Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/13—Phenols; Phenolates
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/16—Nitrogen-containing compounds
  • C08K5/34—Heterocyclic compounds having nitrogen in the ring
  • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
  • C08K5/3477—Six-membered rings
  • C08K5/3492—Triazines
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K7/00—Use of ingredients characterised by shape
  • C08K7/02—Fibres or whiskers
  • C08K7/04—Fibres or whiskers inorganic
  • C08K7/14—Glass
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
  • C08L83/04—Polysiloxanes

Definitions

• a polyacetal resin composition having further excellent mechanical properties is provided.
• the (a) trioxane used in the present invention is a cyclic trimer of formaldehyde, which is generally obtained by reacting an aqueous formaldehyde solution in the presence of an acidic catalyst, and is purified by a method such as distillation. Used for polymerization reaction.
• Examples thereof include tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetrabutoxysilane, methylphenyldimethoxysilane, trimethylmethoxysilane, trimethylethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diphenyldimethoxysilane, and diphenyldiethoxysilane. ..
• R 2 in the above formula (1) relating to the (c2) organopolysiloxane component of the present invention is preferably at least one selected from a methyl group and an ethyl group from the viewpoint of the mechanical properties of the obtained polyacetal resin composition.
• heteropolyacids include phosphomolybdic acid, phosphotungstic acid, phosphomolybdate tungstic acid, phosphomolybd vanadic acid, phosphomolybd tongue tungstic acid, phosphotungstic acid, silicate tungstic acid, silicate molybdate, and keimolybd. Examples thereof include tungstic acid and molybdate tungsten tungstic acid.
• the heteropolyacid is preferably selected from silicolybdic acid, silicotungstic acid, phosphomolybdic acid, and phosphotungstic acid.
• Lewis acid examples include halides of boron, tin, titanium, phosphorus, arsenic and antimony, and specific examples thereof include boron trifluoride, tin tetrachloride, titanium tetrachloride, phosphorus pentafluoride and phosphorus pentafluoride. , Antimony pentafluoride and its complex compounds or salts.
• the deactivation of the polymerization catalyst after the polymerization can be carried out by a conventionally known method.
• a basic compound or an aqueous solution thereof may be added to the product reaction product discharged from the polymerization machine or the reaction product in the polymerization machine.
• the basic compound for neutralizing and inactivating the polymerization catalyst is not particularly limited. After polymerization and deactivation, if necessary, further washing, separation and recovery of unreacted monomers, drying and the like are carried out by conventionally known methods.
• the molecular weight of the (D) polyacetal copolymer obtained as described above preferably has a weight average molecular weight equivalent to methyl polymethacrylate measured by size exclusion chromatography of 10,000 to 500,000, and particularly preferably 20,000 to 150,000. Is.
• the amount of hemiformal terminal group represented by ⁇ OCH 2 OH is preferably 0 to 4 mmol / kg, and particularly preferably 0 to 2 mmol / kg.
• the amount of hemiformal terminal groups can be determined by 1 H-NMR measurement, and the specific measurement method thereof can be referred to the method described in JP-A-2001-11143.
• the amount of impurities in the total amount of monomers and comonomer to be polymerized, particularly water content is preferably 20 ppm or less, particularly preferably 10 ppm or less.
• the polyacetal resin composition of the present embodiment may further contain various known stabilizers and additives.
• the stabilizer include one or more of a nitrogen-containing basic compound, an alkali or alkaline earth metal hydroxide, an inorganic salt, a carboxylate, and the like.
• the additive one or more of general additives for thermoplastic resins, for example, colorants such as dyes and pigments, lubricants, nucleating agents, mold release agents, antistatic agents, and surfactants are used. Can be mentioned.
• the nitrogen-containing basic compound is used to enhance the heat resistance stability and mechanical properties of the polyacetal resin composition.
• the type of the nitrogen-containing basic compound is not particularly limited, and examples thereof include (E) a triazine derivative having a nitrogen-containing functional group.
• N''-triphenylmelamine benzoguanamine, acetoguanamine, 2,4-diamino-6-butyl-sim-triazine, amerin, 2,4-diamino-6-benzyloxy-sim-triazine, 2,4-diamino -6-Butoxy-sim-triazine, 2,4-diamino-6-cyclohexyl-sim-triazine, 2,4-diamino-6-chloro-sim-triazine, 2,4-diamino-6-mercapto-sim-triazine , 2,4-Dioxy-6-amino-sim-triazine, 2-oxy-4,6-diaminosym-triazine, 1,1-bis- (3,5-diamino-2,4,6-triazine) methane , 1,2-bis- (3,5-diamino2,4,6-triazineyl
• fillers include, but are not limited to, talc, mica, wollastonite, carbon fibers, glass beads and the like.
• (A) Polyacetal resin A polyacetal copolymer obtained by copolymerizing 96.7% by mass of trioxane and 3.3% by mass of 1,3-dioxolane (melt index (measured at 190 ° C. and a load of 2160 g according to ISO1133)).

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)

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Citations (9)

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• 2019
  • 2019-08-30 JP JP2019158191A patent/JP7339812B2/ja active Active
• 2020
  • 2020-06-02 WO PCT/JP2020/021698 patent/WO2021039003A1/ja active Application Filing
  • 2020-06-02 CN CN202080040253.5A patent/CN113906098B/zh active Active

Patent Citations (9)

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