JP2009149869A - Resin composition for molded article substitutive for ceramic ware and molded article comprising the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polyester resin composition for a molded article substitutive for ceramic ware, which has massive feeling, texture and glaze similar to those of ceramic work and is excellent in chemical resistance, mechanical characteristics and fluidity. <P>SOLUTION: The resin composition for a molded article substitutive for ceramic ware is prepared by blending (A) 100 pts.wt. of a resin component comprising a polybutylene terephthalate resin with (C) 0.01-5 pts.wt. of a polyfunctional compound having three or more functional groups and (D) 10-120 pts.wt. of an inorganic filler having an average particle diameter of ≤5 μm. The resin composition may further contain one or more resins selected from a polyethylene terephthalate resin, a polycarbonate resin, a polytrimethylene terephthalate resin and a polycyclohexylenedimethylene terephthalate resin as a resin component (B). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a polyester resin composition, and more specifically, a thermoplastic resin composition that is made of a synthetic resin and has a ceramic-like weight, texture, and gloss, and is excellent in chemical resistance, mechanical properties, and fluidity. The present invention relates to a molded product comprising the same.

  Ceramics are used in every application as daily necessities because of their high surface smoothness, low light transmissivity, glossiness, high hardness and no corrosion. Examples of main applications include large rigid containers such as washstands, toilets, and bathtubs, containers for storing food and chemicals, container lids, tableware, tables, desks, chairs, ornaments, buttons for clothes, etc. It is done.

  However, there is a limit to the shape that can be molded, and its weight is also a drawback, especially for large molded products, so it is already lighter by replacing it with a thermoplastic resin molded product, improving design and productivity. Has been done for each application.

  Already, resin molded products having a ceramic-like luster have been widely used, and alternative molded products have been developed with thermosetting resins. However, there are limitations on processability and design, and development with thermoplastic resins is desired. In particular, for application to large molded products such as washstands, toilet bowls, bathtubs, large rigid containers, and for batch molding of a large number of articles, it is required to improve the fluidity of the molten resin and improve the mold transferability.

  The PBT / PET resin compositions described in Patent Documents 1 and 2 have been proposed as resin compositions in order to obtain molded articles having ceramic-like luster. In some cases, the fluidity of the molded product is insufficient, and even if it can be filled, the gloss of the molded product may be insufficient due to insufficient fluidity.

Patent Documents 3 and 4 describe a technique for adding polyfunctionality to a polyester resin, but a melt tension having a trivalent or higher polyvalent carboxylic acid or polyhydric alcohol is 0.8 to 5.0 g. Since the polyester resin adds a polyfunctional compound during polymerization of the polyester, there is a problem that the resulting polyester resin is thickened and fluidity is lowered. Also, although a fluidity improving method is described in which a combination of a specific thermoplastic resin and a compound having a specific at least three functional groups is melt mixed, the fluidity improving effect is insufficient and the mechanical properties are also reduced. It was a tendency to.
JP 2003-26908 A Japanese Patent Laid-Open No. 4-161445 JP 2001-200038 A Japanese Patent Laid-Open No. 7-304970

  [Technical Field] The present invention relates to a ceramic substitute polyester resin composition that improves the above-described problems of the prior art and has excellent fluidity, and has a ceramic-like weight feeling, texture, and gloss while being a polyester resin, and has chemical resistance, mechanical properties. The present invention relates to a resin composition having excellent characteristics and fluidity and a molded product comprising the same.

That is, the present invention is as follows.
(1) 0.01 to 5 parts by weight of (C) a polyfunctional compound having three or more functional groups, and (D) an average particle diameter with respect to 100 parts by weight of a resin component made of (A) polybutylene terephthalate resin 10 to 120 parts by weight of an inorganic filler having a thickness of 5 μm or less is incorporated.
(2) The resin component further contains (B) one or more resins selected from polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, polycyclohexylenedimethylene terephthalate resin, and the resin component is ( A) 40 to 90% by weight of polybutylene terephthalate resin, (B) one or more resins selected from polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, and polycyclohexylene dimethylene terephthalate resin are 10 to 60%. The resin composition for ceramic substitute molded products according to (1), characterized by comprising% by weight.
(3) (B) wherein at least one resin selected from polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, and polycyclohexylenedimethylene terephthalate resin is a polyethylene terephthalate resin. The resin composition for ceramic substitute moldings as described.
(4) (C) The multifunctional compound having three or more functional groups contains one or more alkylene oxide units, and is for a ceramic substitute molded article according to any one of (1) to (3) Resin composition.
(5) (C) At least one group in which the functional group of the polyfunctional compound having three or more functional groups is selected from a hydroxyl group, a carboxyl group, an amino group, a glycidyl group, an isocyanate group, an ester group, and an amide group The resin composition for ceramic substitute molded products according to any one of (1) to (4), wherein
(6) The resin composition for ceramic substitute molded products according to any one of (1) to (5), wherein the inorganic filler (D) is zirconium silicate and / or barium sulfate.
(7) The resin composition for a ceramic substitute molded article according to any one of (1) to (7), wherein the specific gravity of the composition is 1.4 to 2.0.
(8) A ceramic substitute molded product using the resin composition according to any one of (1) to (7).

  According to the present invention, it is possible to provide a polyester resin having a ceramic-like weight feeling, texture, and gloss, and excellent in chemical resistance, mechanical properties, and fluidity.

  The resin component (A) polybutylene terephthalate resin used in the present invention is a polymer having (a) terephthalic acid or an ester-forming derivative thereof and 1,4-butanediol or an ester-forming derivative thereof as main structural units. In addition, a small amount of a copolymer component may be contained as long as the effects of the present invention are not impaired.

  In the present invention, it is preferable that the resin component further contains at least one resin selected from (B) polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, and polycyclohexylenedimethylene terephthalate resin.

  (B) Polyester resins such as polyethylene terephthalate resin, polytrimethylene terephthalate resin, polycyclohexanedimethylene terephthalate resin used in the present invention are (i) terephthalic acid and dicarboxylic acid or ester-forming derivatives thereof and diol or ester formation thereof. Or (b) a hydroxycarboxylic acid or an ester-forming derivative thereof, and (c) a polymer or copolymer having one or more selected from lactone as a main structural unit.

  Examples of the dicarboxylic acid or ester-forming derivative thereof include terephthalic acid, isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, bis (p-carboxyphenyl) methane, anthracene dicarboxylic acid, Aromatic dicarboxylic acids such as 4,4′-diphenyl ether dicarboxylic acid, 5-tetrabutylphosphonium isophthalic acid, 5-sodium sulfoisophthalic acid, diphenic acid, oxalic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, dodecanedione And aliphatic dicarboxylic acids such as acid, malonic acid, glutaric acid and dimer acid, alicyclic dicarboxylic acids such as 1,3-cyclohexanedicarboxylic acid and 1,4-cyclohexanedicarboxylic acid, and ester-forming derivatives thereof. .

  Examples of the diol or ester-forming derivatives thereof include aliphatic glycols having 2 to 20 carbon atoms, that is, ethylene glycol, propylene glycol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, decamethylene. Glycol, cyclohexanedimethanol, cyclohexanediol, dimer diol and the like, or long chain glycols having a molecular weight of 200 to 100,000, that is, aromatic dioxy compounds such as polyethylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, 4'-dihydroxybiphenyl, hydroquinone, t-butylhydroquinone, bisphenol A, bisphenol S, bisphenol F, bisphenol-C, and their esters And Tel-forming derivatives.

  The (B) polyethylene terephthalate resin used in the present invention is a polyester resin composed of terephthalic acid and ethylene glycol, the polytrimethylene terephthalate resin is a polyester resin composed of terephthalic acid and propylene glycol, and the polycyclohexanedimethylene terephthalate resin is terephthalic. It is a polyester resin composed of an acid and cyclohexanedimethanol.

  The viscosities of (A) polybutylene terephthalate resin and (B) polyethylene terephthalate resin, polytrimethylene terephthalate resin, and polycyclohexanedimethylene terephthalate resin used in the present invention are as follows. The intrinsic viscosity when measured is preferably in the range of 0.36 to 1.60 dl / g, and more preferably in the range of 0.50 to 1.50 dl / g.

  The (A) polybutylene terephthalate resin and (B) polyethylene terephthalate resin, polytrimethylene terephthalate resin, and polycyclohexanedimethylene terephthalate resin used in the present invention are produced by a known polycondensation method or ring-opening polymerization method. Either batch polymerization or continuous polymerization can be used, and both transesterification and direct polymerization can be applied, but the amount of carboxyl end groups can be reduced and fluidity can be improved. From the viewpoint of increasing the effect, continuous polymerization is preferable, and direct polymerization is preferable from the viewpoint of cost.

  The (A) polybutylene terephthalate resin and (B) polyethylene terephthalate resin, polytrimethylene terephthalate resin, and polycyclohexanedimethylene terephthalate resin used in the present invention are dicarboxylic acid or an ester-forming derivative thereof and diol or an ester-forming derivative thereof. In the case of a polymer or copolymer obtained by a condensation reaction containing as a main component, a dicarboxylic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof are esterified or transesterified, It can be produced by a polycondensation reaction. In order to effectively advance the esterification reaction or transesterification reaction and polycondensation reaction, it is preferable to add a polymerization reaction catalyst during these reactions. Specific examples of the polymerization reaction catalyst include methyl ester of titanic acid, Organic titanium such as tetra-n-propyl ester, tetra-n-butyl ester, tetraisopropyl ester, tetraisobutyl ester, tetra-tert-butyl ester, cyclohexyl ester, phenyl ester, benzyl ester, tolyl ester, or mixed esters thereof Compound, Dibutyltin oxide, Methylphenyltin oxide, Tetraethyltin, Hexaethylditin oxide, Cyclohexahexyldistin oxide, Didodecyltin oxide, Triethyltin hydroxide, Triphenyl Hydroxide, triisobutyltin acetate, dibutyltin diacetate, diphenyltin dilaurate, monobutyltin trichloride, dibutyltin dichloride, tributyltin chloride, dibutyltin sulfide and butylhydroxytin oxide, methylstannic acid, ethylstannic acid, butylstannic acid, etc. Tin compounds such as alkylstannic acid, zirconia compounds such as zirconium tetra-n-butoxide, antimony compounds such as antimony trioxide and antimony acetate, etc. Among these, organic titanium compounds and tin compounds are preferred, Furthermore, tetra-n-propyl ester, tetra-n-butyl ester and tetraisopropyl ester of titanic acid are preferred, and titanic acid is preferred. Tetra -n- butyl ester is particularly preferred. These polymerization reaction catalysts may be used alone or in combination of two or more. The addition amount of the polymerization reaction catalyst is preferably in the range of 0.005 to 0.5 parts by weight, and 0.01 to 0.2 parts by weight with respect to 100 parts by weight of the polyester resin in terms of mechanical properties, moldability and color tone. A range of parts is more preferred.

  The (B) polycarbonate resin used in the present invention is bisphenol A, that is, 2,2′-bis (4-hydroxyphenyl) propane, 4,4′-dihydroxydiphenylalkane or 4,4′-dihydroxydiphenylsulfone, 4 , 4'-dihydroxydiphenyl ether, 2,2'-bis (3,5-dimethyl-4-hydroxydenyl) propane, one or more dihydroxys selected from 1,1'-bis (4-hydroxyphenyl) cyclohexane It is a polycarbonate mainly composed of a compound. Among these, bisphenol A, that is, a product produced using 2,2'-bis (4-hydroxyphenyl) propane as a main raw material is preferable.

The manufacturing method of (B) polycarbonate resin used by this invention can be manufactured by well-known transesterification and the phosgene method. Specifically, polycarbonate obtained by the transesterification method or the phosgene method using the above bisphenol A or the like as a dihydroxy component is preferable. Furthermore, the bisphenol A may be used in combination with other dihydroxy compounds copolymerizable therewith, such as 4,4′-dihydroxydiphenylalkane, 4,4′-dihydroxydiphenylsulfone, 4,4′-dihydroxydiphenyl ether, and the like. The amount of other dihydroxy compounds used is preferably 10 mol% or less based on the total amount of dihydroxy compounds.

  The degree of polymerization of these polycarbonate resins has a specific viscosity of 1.1 to 2.5, particularly 1.2 to 2.0 when 1 g of polycarbonate resin is dissolved in 90 ml of tetrachloroethane and measured at 25 ° C. Are more preferable, and those in the range of 1.2 to 1.9 are most preferable.

  The resin of the component (B) blended in the (A) polybutylene terephthalate resin used in the present invention may be any as long as the solidification rate is slower than that of the polybutylene terephthalate resin. Preferred are polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, polycyclohexanedimethylene terephthalate resin, polyethylene naphthalate resin, and polyarylate resin. More preferably, polyethylene terephthalate resin and polycarbonate resin. Particularly preferred is polyethylene terephthalate resin.

  In addition, the resin of the component (B) is not necessarily used alone, and a plurality of kinds of resins can be blended and used.

  The ratio of the resin component used in the present invention is in the range of (A) polybutylene terephthalate resin 40 to 90% by weight and (B) component 10 to 60% by weight. More preferably, (A) polybutylene terephthalate resin is 50 to 90% by weight, and (B) component is 10 to 50% by weight, and particularly preferably (A) polybutylene terephthalate resin is 65 to 90% by weight, and (B) component. 10 to 35% by weight. When the component (B) exceeds 60% by weight, the molding cycle is greatly extended, and chemical resistance is impaired.

  In addition, the resin of the component (B) is not necessarily used alone, and a plurality of kinds of resins can be blended and used. Furthermore, other resins can be used depending on the required properties.

  In the present invention, (A) polybutylene terephthalate resin and (B) component polyester resin and polycarbonate resin are not limited to these, but do not impair the properties of the thermoplastic resin composition of the present invention. It is possible to mix resins other than those mentioned above. The resin that can be mixed may be any resin that can be melt-molded. For example, a polyethylene resin, a polypropylene resin, a polymethylpentene resin, a cyclic olefin resin, a cellulose resin such as cellulose acetate, a polyamide resin, a polyacetal resin, Examples include polysulfone resin, polyphenylene sulfide resin, polyether ether ketone resin, polyimide resin, polyetherimide resin, styrene resin, ABS resin, and elastomer. The resin to be mixed is not necessarily one type, and two or more types are mixed. You may use together.

  (C) The polyfunctional compound having three or more functional groups and containing one or more alkylene oxide units is a component necessary for improving the fluidity of the thermoplastic resin of the present invention. is there. The component (C) may be a low molecular compound or a high molecular weight polymer as long as it has three or more functional groups in the molecule. Such a functional group of component (C) is preferably at least one selected from a hydroxyl group, a carboxyl group, an amino group, a glycidyl group, an isocyanate group, an ester group, and an amide group. Among these, it is preferable to have three or more functional groups that are the same or different.

  (C) As a preferred example of a compound having three or more functional groups, when the functional group is a hydroxyl group, 1,2,4-butanetriol, 1,2,5-pentanetriol, 1,2,6- Xanthriol, 1,2,3,6-hexanetetrol, glycerin, diglycerin, triglycerin, tetraglycerin, pentaglycerin, hexaglycerin, triethanolamine, trimethylolethane, trimethylolpropane, ditrimethylolpropane, tritrimethylol Propane, 2-methylpropanetriol, 2-methyl-1,2,4-butanetriol, pentaerythritol, dipentaerythritol, tripentaerythritol, methylglucoside, sorbitol, mannitol, sucrose, 1,3,5-trihydroxybenzene , Include polymers such as polyhydric alcohol or a polyvinyl alcohol having a carbon number of 3 to 24 such as 2,4-trihydroxybenzene. Of these, glycerin, diglycerin, trimethylolpropane, ditrimethylolpropane, pentaerythritol, and dipentaerythritol having a branched structure are preferable from the viewpoint of fluidity and mechanical properties.

  (C) The compound having three or more functional groups is preferably a compound having a trivalent or tetravalent hydroxyl group. More preferably, it has a trivalent hydroxyl group. When a compound having a trivalent or tetravalent hydroxyl group is used, the fluidity is particularly good, and the component (C) is less likely to appear on the surface of the molded product during wet heat treatment.

(C) As a preferred example of a compound having three or more functional groups, when the functional group is a carboxyl group, propane-1,2,3-tricarboxylic acid, 2-methylpropane-1,2,3-triscarboxylic acid Acid, butane-1,2,4-tricarboxylic acid, butane-1,2,3,4-tetracarboxylic acid, trimellitic acid, trimesic acid, hemimellitic acid, pyromellitic acid, benzenepentacarboxylic acid, cyclohexane-1 , 2,4-tricarboxylic acid, cyclohexane-1,3,5-tricarboxylic acid, cyclohexane-1,2,4,5-tetracarboxylic acid, naphthalene-1,2,4-tricarboxylic acid, naphthalene-2,5, 7-tricarboxylic acid, pyridine-2,4,6-tricarboxylic acid, naphthalene-1,2,7,8-tetracarboxylic acid, naphthalene-1,4,5 Polycarboxylic acid or acrylic acid, such as 8-tetracarboxylic acid, include polymers such as methacrylic acid, it may be used acid anhydrides thereof. Of these, propane-1,2,3-tricarboxylic acid, trimellitic acid, trimesic acid and acid anhydrides having a branched structure are preferable from the viewpoint of fluidity.

  (C) When the functional group of a compound having three or more functional groups is an amino group, at least one of the three or more substituents is preferably a primary or secondary amine, both of which are primary Or it is more preferable that it is a secondary amine, and it is especially preferable that all are primary amines. (B) As a preferable example of the compound having three or more functional groups, when the functional group is an amino group, 1,2,3-triaminopropane, 1,2,3-triamino-2-methylpropane, 1 , 2,4-triaminobutane, 1,2,3,4-tetraminobutane, 1,3,5-triaminocyclohexane, 1,2,4-triaminocyclohexane, 1,2,3-triaminocyclohexane, 1,2,4,5-tetraminocyclohexane, 1,3,5-triaminobenzene, 1,2,4-triaminobenzene, 1,2,3-triaminobenzene, 1,2,4,5-tetramino Benzene, 1,2,4-triaminonaphthalene, 2,5,7-triaminonaphthalene, 2,4,6-triaminopyridine, 1,2,7,8-tetraminonaphthalene, 1,4,5,8 -Tet Examples include laminonaphthalene. Of these, 1,2,3-triaminopropane, 1,3,5-triaminocyclohexane and 1,3,5-triaminobenzene having a branched structure are preferable from the viewpoint of fluidity.

  (C) As a preferred example of a compound having three or more functional groups, when the functional group is a glycidyl group, a monomer such as triglycidyl triazolidine-3,5-dione, triglycidyl isocyanurate, poly Examples include (ethylene / glycidyl methacrylate) -g-polymethyl methacrylate, glycidyl group-containing acrylic polymer, glycidyl group-containing acrylic / styrene polymer, and the like.

  (C) As a preferred example of a compound having three or more functional groups, when the functional group is an isocyanate group, nonane triisocyanate (for example, 4-isocyanatomethyl-1,8-octane diisocyanate (TIN)), decantrie Examples thereof include isocyanate, undecane triisocyanate, and dodecane triisocyanate.

  (C) As a preferable example of a compound having three or more functional groups, when the functional group is an ester group, the aliphatic acid ester or aromatic acid ester of the compound having three or more hydroxyl groups, or the three or more groups described above And ester derivatives of compounds having a carboxylic acid group.

  (C) As a preferable example of the compound having three or more functional groups, when the functional group is an amide group, an amide derivative of the compound having three or more carboxylic acid groups is exemplified.

  From the viewpoint of fluidity and mechanical properties, it is preferable that the compound (C) having three or more functional groups contains one or more alkylene oxide units. Preferred examples of the alkylene oxide unit include aliphatic alkylene oxide units having 1 to 4 carbon atoms. Specific examples include methylene oxide units, ethylene oxide units, trimethylene oxide units, propylene oxide units, tetramethylene oxide units. 1,2-butylene oxide units, 2,3-butylene oxide units or isobutylene oxide units. In the present invention, it is particularly preferable to use a compound containing an ethylene oxide unit or a propylene oxide unit as an alkylene oxide unit. Particularly preferred are compounds containing propylene oxide units.

  The number of alkylene oxide units contained in the compound (C) having three or more functional groups used in the present invention is preferably 0.1 to 20 alkylene oxide units per functional group, 0.5 to 10 is more preferable, and 1 to 5 is more preferable.

  As a preferred example of the compound having three or more functional groups (C) containing one or more alkylene oxide units, when the functional group is a hydroxyl group, (poly) oxymethylene glycerin, (poly) oxyethylene glycerin, (poly) Oxytrimethylene glycerol, (poly) oxypropylene glycerol, (poly) oxyethylene- (poly) oxypropylene glycerol, (poly) oxytetramethylene glycerol, (poly) oxymethylene diglycerol, (poly) oxyethylene diglycerol, ( Poly) oxytrimethylene diglycerin, (poly) oxypropylene diglycerin, (poly) oxymethylenetrimethylolpropane, (poly) oxyethylenetrimethylolpropane, (poly) oxytrimethylenetrimethylolpropane, (poly) oxyp Pyrenetrimethylolpropane, (poly) oxyethylene- (poly) oxypropylene trimethylolpropane, (poly) oxytetramethylenetrimethylolpropane, (poly) oxymethyleneditrimethylolpropane, (poly) oxyethyleneditrimethylolpropane, (poly ) Oxytrimethylene ditrimethylolpropane, (poly) oxypropylene ditrimethylolpropane, (poly) oxymethylene pentaerythritol, (poly) oxyethylene pentaerythritol, (poly) oxytrimethylene pentaerythritol, (poly) oxypropylene pentaerythritol, (Poly) oxyethylene- (poly) oxypropylene pentaerythritol, (poly) oxytetramethylene pentaerythritol, (poly) io Simethylenedipentaerythritol, (poly) oxyethylene dipentaerythritol, (poly) oxytrimethylene dipentaerythritol, (poly) oxypropylene dipentaerythritol, (poly) oxymethylene glucose, (poly) oxyethylene glucose, (poly ) Oxytrimethylene glucose, (poly) oxypropylene glucose, (poly) oxyethylene- (poly) oxypropylene glucose, (poly) oxytetramethylene glucose and the like.

  When the functional group is a carboxylic acid, propane-1,2,3-tricarboxylic acid containing a (poly) methylene oxide unit, propane-1,2,3-tricarboxylic acid containing a (poly) ethylene oxide unit, (poly) tricarboxylic acid Propane-1,2,3-tricarboxylic acid containing methylene oxide units, Propane-1,2,3-tricarboxylic acid containing (poly) propylene oxide units, Propane-1,2, containing (poly) tetramethylene oxide units 3-tricarboxylic acid, 2-methylpropane-1,2,3-triscarboxylic acid containing (poly) methylene oxide units, 2-methylpropane-1,2,3-triscarboxylic acid containing (poly) ethylene oxide units, 2-methylpropane-1,2,3-triscarboxylic acid containing (poly) trimethylene oxide units, (poly) propyl 2-methylpropane-1,2,3-triscarboxylic acid containing pyrene oxide units, 2-methylpropane-1,2,3-triscarboxylic acid containing (poly) tetramethylene oxide units, (poly) methylene oxide units -1,2,4-tricarboxylic acid containing, butane-1,2,4-tricarboxylic acid containing (poly) ethylene oxide units, butane-1,2,4-tricarboxylic acid containing (poly) trimethylene oxide units , Butane-1,2,4-tricarboxylic acid containing (poly) propylene oxide units, butane-1,2,4-tricarboxylic acid containing (poly) tetramethylene oxide units, butane containing (poly) methylene oxide units 1,2,3,4-tetracarboxylic acid, butane-1,2,3,4-teto containing (poly) ethylene oxide units Carboxylic acid, butane-1,2,3,4-tetracarboxylic acid containing (poly) trimethylene oxide units, butane-1,2,3,4-tetracarboxylic acid containing (poly) propylene oxide units, (poly ) Butane-1,2,3,4-tetracarboxylic acid containing tetramethylene oxide units, trimellitic acid containing (poly) methylene oxide units, trimellitic acid containing (poly) ethylene oxide units, (poly) trimethylene oxide Includes trimellitic acid containing units, trimellitic acid containing (poly) propylene oxide units, trimellitic acid containing (poly) tetramethylene oxide units, trimesic acid containing (poly) methylene oxide units, and (poly) ethylene oxide units Trimesic acid, trimesic acid containing (poly) trimethylene oxide units, (I) trimesic acid containing propylene oxide units, trimesic acid containing (poly) tetramethylene oxide units, hemimellitic acid containing (poly) methylene oxide units, hemimellitic acid containing (poly) ethylene oxide units, (poly) trimethylene Hemimellitic acid containing oxide units, Hemimellitic acid containing (poly) propylene oxide units, Hemimellitic acid containing (poly) tetramethylene oxide units, Pyromellitic acid containing (poly) methylene oxide units, (Poly) ethylene oxide units Containing pyromellitic acid, pyromellitic acid containing (poly) trimethylene oxide units, pyromellitic acid containing (poly) propylene oxide units, pyromellitic acid containing (poly) tetramethylene oxide units, (poly) methylene oxide units Containing cyclohe Sun-1,3,5-tricarboxylic acid, cyclohexane-1,3,5-tricarboxylic acid containing (poly) ethylene oxide units, cyclohexane-1,3,5-tricarboxylic acid containing (poly) trimethylene oxide units, Examples include cyclohexane-1,3,5-tricarboxylic acid containing a poly) propylene oxide unit, cyclohexane-1,3,5-tricarboxylic acid containing a (poly) tetramethylene oxide unit, and the like.

  When the functional group is an amino group, 1,2,3-triaminopropane containing (poly) methylene oxide units, 1,2,3-triaminopropane containing (poly) ethylene oxide units, (poly) trimethylene oxide units 1,2,3-triaminopropane containing 1,2,3-triaminopropane containing (poly) propylene oxide units, 1,2,3-triaminopropane containing (poly) tetramethylene oxide units, ( 1,2,3-triamino-2-methylpropane containing poly) methylene oxide units, 1,2,3-triamino-2-methylpropane containing (poly) ethylene oxide units, 1 containing (poly) trimethylene oxide units 1,2,3-triamino-2-methylpropane, 1,2,3-triamino-2 containing (poly) propylene oxide units Contains methylpropane, 1,2,3-triamino-2-methylpropane containing (poly) tetramethylene oxide units, 1,2,4-triaminobutane containing (poly) methylene oxide units, (poly) ethylene oxide units 1,2,4-triaminobutane, 1,2,4-triaminobutane containing (poly) trimethylene oxide units, 1,2,4-triaminobutane containing (poly) propylene oxide units, (poly) 1,2,4-triaminobutane containing tetramethylene oxide units, 1,2,3,4-tetraminobutane containing (poly) methylene oxide units, 1,2,3,4-containing (poly) ethylene oxide units Tetraminobutane, 1,2,3,4-tetraminobutane containing (poly) trimethylene oxide units, (poly) propyleneoxy 1,2,3,4-tetraminobutane containing units, 1,2,3,4-tetraminobutane containing (poly) tetramethylene oxide units, 1,3,5-triamino containing (poly) methylene oxide units Cyclohexane, 1,3,5-triaminocyclohexane containing (poly) ethylene oxide units, 1,3,5-triaminocyclohexane containing (poly) trimethylene oxide units, 1,3 containing (poly) propylene oxide units 5-triaminocyclohexane, 1,3,5-triaminocyclohexane containing (poly) tetramethylene oxide units, 1,2,4-triaminocyclohexane containing (poly) methylene oxide units, (poly) ethylene oxide units included 1,2,4-triaminocyclohexane, (poly) trimethylene oxide unit 1,2,4-triaminocyclohexane containing, 1,2,4-triaminocyclohexane containing (poly) propylene oxide units, 1,2,4-triaminocyclohexane containing (poly) tetramethylene oxide units, ( 1,2,4,5-tetraminocyclohexane containing poly) methylene oxide units, 1,2,4,5-tetraminocyclohexane containing (poly) ethylene oxide units, 1,2,4 containing (poly) trimethylene oxide units , 5-tetraminocyclohexane, 1,2,4,5-tetraminocyclohexane containing (poly) propylene oxide units, 1,2,4,5-tetraminocyclohexane containing (poly) tetramethylene oxide units, (poly) methylene oxide 1,3,5-triaminobenzene containing units, (poly) ethylene 1,3,5-triaminobenzene containing oxide units, 1,3,5-triaminobenzene containing (poly) trimethylene oxide units, 1,3,5-triaminobenzene containing (poly) propylene oxide units 1,3,5-triaminobenzene containing (poly) tetramethylene oxide units, 1,2,4-triaminobenzene containing (poly) methylene oxide units, 1,2,4 containing (poly) ethylene oxide units -Triaminobenzene, 1,2,4-triaminobenzene containing (poly) trimethylene oxide units, 1,2,4-triaminobenzene containing (poly) propylene oxide units, (poly) tetramethylene oxide units Examples thereof include 1,2,4-triaminobenzene.

  When the functional group is an ester group, the aliphatic acid ester or aromatic acid ester of a compound having three or more hydroxyl groups containing the alkylene oxide unit, or a compound having three or more carboxylic acid groups containing the alkylene oxide unit is used. Examples include ester derivatives.

  When the functional group is an amide group, an amide derivative of a compound having three or more carboxylic acid groups containing the above-described alkylene oxide unit can be used.

  As a particularly preferred example of a compound having three or more functional groups (C) containing one or more alkylene oxide units from the viewpoint of fluidity, when the functional group is a hydroxyl group, (poly) oxymethylene glycerin, (poly) oxy Propylene glycerin, (poly) oxyethylene diglycerin, (poly) oxyethylene trimethylolpropane, (poly) oxypropylene trimethylolpropane, (poly) oxyethylene ditrimethylolpropane, (poly) oxypropylene ditrimethylolpropane, (poly) Examples include oxyethylene pentaerythritol, (poly) oxypropylene pentaerythritol, (poly) oxyethylene dipentaerythritol, and (poly) oxypropylene dipentaerythritol. When the functional group is a carboxylic acid, (poly) ethyl Propane-1,2,3-tricarboxylic acid containing propane oxide unit, propane-1,2,3-tricarboxylic acid containing (poly) propylene oxide unit, trimellitic acid containing (poly) ethylene oxide unit, (poly) propylene oxide Trimellitic acid containing units, trimesic acid containing (poly) ethylene oxide units, trimesic acid containing (poly) propylene oxide units, cyclohexane-1,3,5-tricarboxylic acid containing (poly) ethylene oxide units, (poly) propylene And cyclohexane-1,3,5-tricarboxylic acid containing an oxide unit. When the functional group is an amino group, 1,2,3-triaminopropane containing a (poly) ethylene oxide unit, (poly) propylene oxide unit 1,2,3-triaminopropane containing (poly 1,3,5-triaminocyclohexane containing ethylene oxide units, 1,3,5-triaminocyclohexane containing (poly) propylene oxide units, 1,3,5-triaminobenzene containing (poly) ethylene oxide units, ( 1,3,5-triaminobenzene containing poly) propylene oxide units.

  The compound (C) having three or more functional groups used in the present invention may react with the components (A) and (B) and be introduced into the main chain and side chain of the components (A) and (B). The structure at the time of mixing may be maintained without reacting with the components (A) and (B). (C) The reaction rate of the functional group of the compound having three or more functional groups is preferably 40% or more, more preferably 50% or more, and particularly preferably 60% or more.

  The viscosity of the compound (C) having three or more functional groups used in the present invention is preferably 15000 m · Pa or less at 25 ° C., and more preferably 5000 m · Pa or less in terms of fluidity and mechanical properties. It is preferably 2000 m · Pa or less. Although there is no particular lower limit, it is preferably 100 m · Pa or more from the viewpoint of bleeding property at the time of molding. When the viscosity at 25 ° C. is larger than 15000 m · Pa, the fluidity improving effect is insufficient, which is not preferable.

  The molecular weight or weight average molecular weight (Mw) of the compound having three or more functional groups (C) used in the present invention is preferably in the range of 50 to 10,000, and in the range of 150 to 8,000 in terms of fluidity. It is more preferable that it is in the range of 200 to 3000. In the present invention, (C) Mw of a compound having three or more functional groups is a value in terms of polymethyl methacrylate (PMMA) measured by gel permeation chromatography (GPC) using hexafluoroisopropanol as a solvent. .

  The moisture content of the compound (C) having 3 or more functional groups used in the present invention is preferably 1% or less. More preferably, the moisture content is 0.5% or less, and further preferably 0.1% or less. There is no particular lower limit for the moisture content of the component (C). A moisture content higher than 1% is not preferable because it causes a decrease in mechanical properties.

  In the present invention, the compounding amount of the compound (C) having three or more functional groups is 0.01 to 5 parts by weight of the component (C) with respect to 100 parts by weight of the total of the component (A) and the component (B). It is essential that it is in the range, and from the viewpoint of fluidity and mechanical properties, it is preferably 0.03 to 5, more preferably 0.03 to 3 parts by weight.

  In the compound having (C) three or more functional groups used in the present invention, the component (C) preferably has at least one hydroxyl group or carboxylic acid group from the viewpoint of fluidity. The component (C) preferably has 3 or more hydroxyl groups or carboxylic acid groups, and the component (C) more preferably has 3 or more hydroxyl groups.

  In the resin composition of this invention, it is preferable to mix | blend 10-120 weight part of (D) inorganic fillers whose average particle diameter is 5 micrometers or less. More preferably, it mix | blends in 30-120 weight part, It is especially preferable to mix | blend in 40-100 weight part. When the addition amount of the inorganic filler is less than 10 parts by weight, the effect of improving the molding cycle property is small. On the other hand, when the addition amount exceeds 120 parts by weight, the resin composition can be added even if a polyfunctional compound is added. This is not preferable because the fluidity of the resin becomes low.

  The blending amount of the inorganic filler (D) used in the present invention is preferably a specific gravity of 1.4 to 2.0, more preferably a specific gravity of 1.5 to 1 so that the weight and texture are not impaired. .9, more preferably 1.6 to 1.9. When the specific gravity of the resin composition is less than 1.4, the feeling of weight and texture are impaired. When the specific gravity exceeds 2.0, (D) the inorganic filler having an average particle diameter of 5 μm or less exceeds 120 parts by weight, and the surface gloss Or the fluidity of the resin decreases.

  As the kind of (D) inorganic filler that can be used in the resin composition of the present invention, zirconium silicate, barium sulfate, strontium sulfate, zirconium oxide, titanium oxide, zinc oxide, and zinc sulfate can be preferably used. These can be used alone or in combination. As the inorganic filler that can be used, any filler such as plate, powder, and granule can be mixed and used. Specific examples include powdery, granular or plate-like fillers such as zirconium sulfate, mica, talc, kaolin, silica, calcium carbonate, glass beads, glass microballoons, clay, molybdenum disulfide, calcium polyphosphate, Among these, a granular filler is preferable.

  Moreover, as an average particle diameter of the inorganic filler used as (D) component, it is preferable to mix | blend an inorganic filler with an average particle diameter of 5 micrometers or less in terms of glossiness and surface appearance, and an average particle diameter of 3 micrometers or less. It is more preferable to mix an inorganic filler, and it is particularly preferable to mix an inorganic filler having an average particle size of 2.5 μm or less.

  (D) The inorganic filler can also be used by treating the surface with a known coupling agent (for example, silane coupling agent, titanate coupling agent, etc.) or other surface treatment agents.

  The inorganic filler (D) used in the present invention may be coated with a thermoplastic resin such as an ethylene / vinyl acetate copolymer, or a thermosetting resin such as an epoxy resin, or a coupling such as aminosilane or epoxysilane. It may be treated with an agent.

  In the present invention, a crystal nucleating agent, a plasticizer, an ultraviolet absorber, an antibacterial agent, a stabilizer, a release agent, a colorant including a pigment and a dye, a lubricant, and an antistatic agent are added within a range not impairing the effects of the present invention. One or more kinds can be added.

  The method for producing the resin composition of the present invention includes, for example, (A) component polybutylene terephthalate resin and (B) component polyester resin and polycarbonate resin, (C) polyfunctional compound, (D) inorganic filler, Depending on the productivity, a method of uniformly melting and kneading other components with a single screw or twin screw extruder, a method of removing the solvent after mixing in a solution, etc. are preferably used. A method of uniformly melt-kneading with an extruder is preferred, and a method of uniformly melt-kneading with a twin-screw extruder is more preferred in that a resin composition excellent in fluidity and mechanical properties can be obtained. In particular, when the screw length is L and the screw diameter is D, a melt kneading method using a twin screw extruder with L / D> 30 is particularly preferable. The screw length here refers to the length from the position where the screw base material is supplied to the tip of the screw. The greater the L / D, the greater the fluidity improving effect of the compound having (C) three or more functional groups. The upper limit of L / D of a twin screw extruder is 150, and preferably the L / D exceeds 30 and 100 or less.

  In the present invention, the screw structure used in the twin-screw extruder is a combination of full flight and kneading disk, but uniform kneading with a screw is required to obtain the composition of the present invention. is there. Therefore, the ratio of the total length (kneading zone) of the kneading disk to the total screw length is preferably in the range of 5 to 50%, and more preferably in the range of 10 to 40%.

  In the present invention, when melt-kneading, each component is charged by using, for example, an extruder having two charging ports, from the main charging port installed on the screw base side, and the components (A) and (B) , (C) a method of supplying a compound having three or more functional groups and other components as required, or supplying main component (A), component (B) and other components from the main input port, And (C) a method in which a compound having three or more functional groups is supplied and melt-mixed from a sub-inlet installed between the top of the extruder and the tip of the extruder.

  The resin composition of the present invention can be molded by any method such as generally known injection molding, extrusion molding, blow molding, press molding, and spinning, and can be processed and used in various molded products. As molded products, it can be used as injection molded products, extrusion molded products, blow molded products, films, sheets, fibers, etc., as films, as various films such as unstretched, uniaxially stretched, biaxially stretched, as fibers, It can be used as various fibers such as undrawn yarn, drawn yarn, and super-drawn yarn. In particular, in the present invention, it is possible to process into an injection-molded product having a thin portion having a thickness of 0.01 to 1.0 mm by taking advantage of the excellent fluidity.

  In the present invention, the above-mentioned various molded products can be used for various applications such as various containers, building members, daily necessities, household goods and hygiene products, in particular, toiletries, tableware, It is suitable as various containers such as flower pots and housing equipment such as wash bowls.

  EXAMPLES Next, although an Example demonstrates this invention further in detail, these do not limit this invention and can also carry out various deformation | transformation.

  Abbreviations and main contents of main raw materials used in Examples and the like are summarized below.

  (A) Polybutylene terephthalate resin.

(B) Thermoplastic resin B-1: Polyethylene terephthalate ("T-900E" manufactured by Toray)
B-2: Polytrimethylene terephthalate ("Corterra" CP509 manufactured by Shell Chemicals)
211)
B-3: Polycyclohexylene dimethylene terephthalate / polyethylene terephthalate ("DN003" manufactured by Eastman Kodak Company)
B-4: Polycarbonate (“Taflon” A1900 manufactured by Idemitsu Kosan Co., Ltd.)

(C) Compound C-1 having three or more functional groups: Glycerin (molecular weight 92, number of alkylene oxide units 0 per functional group, manufactured by Tokyo Chemical Industry Co., Ltd.)
C-2: Trimethylolpropane (molecular weight 134, 0 alkylene oxide units per functional group, manufactured by ARDRICH)
C-3: Pentaerythritol (molecular weight 136, alkylene oxide unit number 0 per functional group, manufactured by Tokyo Chemical Industry Co., Ltd.)
C-4: Polyoxyethylene diglycerin (molecular weight 410, number of alkylene oxide units per functional group 1.5, Sakamoto Yakuhin SC-E450)
C-5: Oxyethylenetrimethylolpropane (molecular weight 266, number of alkylene oxide units 1 per functional group, TMP-30U manufactured by Nippon Emulsifier)
C-6: Polyoxyethylene pentaerythritol (molecular weight 400, number of alkylene oxide units per functional group 1.5, Nippon Emulsifier PNT-60U).
C-7: Polyoxypropylene trimethylolpropane, Nippon Emulsifier Co., Ltd. TMP-F32

(C ′) Compound C′-1: 1,6-hexanediol having less than 3 functional groups (manufactured by ARDRICH)
C′-2: 4,4′-dihydroxybiphenyl (manufactured by Honshu Chemical).

(D) Inorganic filler D-1 having an average particle diameter of 5 μm or less: Barium sulfate (“Variace” B-55 manufactured by Sakai Chemical) Average particle diameter = 0.66 μm
D-2: Barium sulfate (“Variace” BF-20, manufactured by Sakai Chemical) average particle size = 0.03 μm
D-3: Barium sulfate (“Variace” BMH manufactured by Sakai Chemical) average particle size = 2.5 μm
D-4: Barium sulfate (“Variace” BMH-100 manufactured by Sakai Chemical) average particle size = 10 μm
D-5: Zirconium silicate (average particle size 0.6 μm)
D-6: Zirconium silicate (average particle size 1.4 μm)
D-7: Zirconium silicate (average particle size 10 μm).

  Moreover, the evaluation methods used in Examples and the like are summarized below.

(1) Fluidity Using a strip-shaped molded product having a thickness of 1 mm and a width of 10 mm, the fluidity was judged. The injection conditions for the (A) polybutylene terephthalate resin are a cylinder temperature of 260 ° C., a mold temperature of 80 ° C., and an injection pressure of 65 MPa. In the case of (A) polybutylene terephthalate resin / (B) polyethylene terephthalate resin, polypropylene terephthalate resin, polycyclohexylene dimethylene terephthalate, and polycarbonate resin, the cylinder temperature is 270 ° C., the mold temperature is 80 ° C., and the injection pressure is 80 MPa.

(2) Glossiness The glossiness (%) of the test piece surface was measured using a gloss meter. The higher the glossiness, the more the ceramic gloss.

(3) Chemical resistance Manicure liquid (Neuve Nail Color manufactured by Osaka Shiseido Co., Ltd.) and hair tonic liquid (Brabus Hair Liquid manufactured by Osaka Shiseido Co., Ltd.) are applied to the surface of the test piece, and a petri dish is placed over the test piece to prevent it from drying out. For 24 hours, and the presence or absence of surface change was evaluated.
Those with “◯” display are suitable for chemical resistance since there is no change in appearance. Those marked “x” are not suitable for chemical resistance because of their appearance changes.

(4) Specific gravity measurement Specific gravity was measured according to ISO1183.

(5) Protruding Deformability For the molding cycle, the small box test piece shown in FIG. 1 was molded, and the solidification rate was evaluated based on the trace and deformation of the protruding pin when protruding after cooling for 10 seconds in the mold.
Accordingly, those marked “◯” have no trace or deformation of the protruding pin, have a high solidification speed, and are suitable for high cycle molding. Those marked “x” have traces of the protruding pin, deformation or breakage, and the solidification rate is low, which is not suitable for high cycle molding.

(6) Moisture and heat resistance test Using a test piece according to ISO527-1, molded at a cylinder temperature of 260 ° C and a mold temperature of 80 ° C, it was treated for 100 hours in an environment of 121 ° C, 100% RH, 2 atm. If the surface of the molded product is visually observed and liquid adheres to the surface of the molded product, Δ. If the liquid is slightly attached to the surface of the molded product, Δ to ○. If the liquid did not adhere to the surface of the molded product, it was marked as ◯.

(7) Surface Hardness Using a square plate molded product of 80 mm × 80 mm × 3 mm, the pencil hardness of the molded product surface was measured according to JIS K5600 (1999). In addition, the pencil of the standard JIS S6006 (1996) was used.

[Examples 1 to 28, Comparative Examples 1 to 7]
(A) Polybutylene terephthalate resin, (B) Polyester resin or polycarbonate resin, (C) Polyfunctional compound, (D) Inorganic filler are mixed together and pelletized using a twin screw extruder with L / D = 45 A resin composition was obtained.

  (A) In the case of only polybutylene terephthalate resin, cylinder temperature 250 ° C., rotation speed 200 rpm, (A) polybutylene terephthalate resin, (B) polyethylene terephthalate resin, polytrimethylene terephthalate resin, polycarbonate resin, polycyclohexylene diene In the case of methylene terephthalate resin, the conditions were a cylinder temperature of 260 ° C. and a rotation speed of 200 rpm.

  Using the resin composition obtained by using an injection molding machine SG75H-MIV manufactured by Sumitomo Heavy Industries, when the resin component is only (A) polybutylene terephthalate resin, the cylinder temperature is 250 ° C., the mold temperature is 80 ° C., and (A) polybutylene is used. When terephthalate and (B) polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, polycyclohexylene dimethylene terephthalate resin are used in combination, injection molding of various molded products for evaluation at a cylinder temperature of 270 ° C and a mold temperature of 80 ° C did.

  Table 1, Table 2, Table 3, and Table 4 show examples and comparative examples.

  From the results of Table 1, Table 2, Table 3, and Table 4, the following became clear.

  In comparison between Examples 1 to 6 and Comparative Examples 1 and 2, it can be seen that (C) when a polyfunctional compound having three or more functional groups is used, the effect of improving fluidity is greater than that of the bifunctional compound. . In comparison between Examples 6 to 10 and Comparative Example 3, when (B) a polyfunctional compound having three or more functional groups is added, the fluidity of the resin composition is greatly improved as compared with the case where no addition is made. I understand that. Moreover, the fluidity | liquidity of a resin composition improves according to the addition amount.

  In comparison between Examples 6, 11, and 12 and Comparative Example 4, it can be seen that (D) the glossiness decreases when an inorganic filler having an average particle diameter exceeding 5 μm is used.

  In the comparison between Example 6 and Examples 13 to 16 and Comparative Examples 5 and 6, when (D) an inorganic filler having an average particle diameter of 5 μm or less is not used, it is deformed at the time of extrusion of the molded product, while excessive. It was found that when added to, the glossiness and fluidity are lowered.

  In the comparison between Example 6 and Examples 16 to 20 and Comparative Example 7, when the component (B) exceeds 60% by weight, the protrusion deformation may occur, the molding cycle may become longer, or the chemical resistance may be lowered. Recognize.

  In Example 6 and Examples 21 to 25, the type and amount of the C component are different. It was found that the addition of C-7 further improved the adhesion of the liquid on the surface of the molded article after the heat and humidity resistance test.

  Examples 26-28 differ in the kind of D component. It was found that the surface hardness was further improved by using D-5, D-6, and D-7. It was also found that the hardness was improved by reducing the particle size of zirconium silicate.

It is a perspective view of the test piece used for evaluation of protrusion deformability in an Example. It is a front view of the test piece used for the protrusion deformation | transformation evaluation in the Example.

Explanation of symbols

1: Specimen width (29mm)
2: Test piece height (29 mm)
3: Depth of test piece (29 mm)
4: Thickness of test piece (1.5 mm)
5: Test piece gate 6: Test piece opening 7: Test piece protruding pin mark

Claims (8)

  (A) 0.01 to 5 parts by weight of a polyfunctional compound having three or more functional groups, and (D) an average particle size of 5 μm or less with respect to 100 parts by weight of a resin component comprising a polybutylene terephthalate resin 10 to 120 parts by weight of an inorganic filler, which is a resin composition for a ceramic substitute molded article.   The resin component further contains (B) one or more resins selected from polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, polycyclohexylene dimethylene terephthalate resin, and the resin component is (A) poly 40 to 90% by weight of butylene terephthalate resin, 10 to 60% by weight of one or more resins selected from (B) polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, and polycyclohexylene dimethylene terephthalate resin The resin composition for a ceramic substitute molded product according to claim 1, comprising:   The ceramic according to claim 2, wherein at least one resin selected from (B) polyethylene terephthalate resin, polycarbonate resin, polytrimethylene terephthalate resin, and polycyclohexylene dimethylene terephthalate resin is polyethylene terephthalate resin. Resin composition for alternative molded products.   (C) The resin composition for a ceramic substitute molded article according to any one of claims 1 to 3, wherein the polyfunctional compound having three or more functional groups contains one or more alkylene oxide units.   (C) The functional group of the polyfunctional compound having three or more functional groups is at least one group selected from a hydroxyl group, a carboxyl group, an amino group, a glycidyl group, an isocyanate group, an ester group, and an amide group. The resin composition for a ceramic substitute molded article according to any one of claims 1 to 4.   (D) The inorganic filler is barium sulfate and / or zirconium silicate, the resin composition for ceramic substitute molded products according to any one of claims 1 to 5.   The resin composition for a ceramic substitute molded article according to any one of claims 1 to 6, wherein the specific gravity of the composition is 1.4 to 2.0.   A ceramic substitute molded article using the resin composition according to any one of claims 1 to 7.

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