POLYAMIDE RESIN COMPOSITION AND MOLDING PRODUCT

    公开(公告)号:JP2001098148A

    公开(公告)日:2001-04-10

    申请号:JP2000001158

    申请日:2000-01-06

    Abstract: PROBLEM TO BE SOLVED: To obtain a molding product having an excellent circular structural part excellent in durability in high-temperature use and dimensional stability in water absorption by molding a polyamide resin composition prepared by melting and kneading a polyamide resin with a laminar silicate by a simpler method than a conventional polymerization method. SOLUTION: This resin composition for molding product having a circular structural part is obtained by melting and kneading (A) a polyamide resin with (B) a laminar silicate in which the (B) the laminar silicate is uniformly dispersed into the polyamide resin composition on a single layer level.

    REINFORCED POLYACETAL RESIN COMPOSITION AND INJECTION MOLDED PRODUCT

    公开(公告)号:JP2000169667A

    公开(公告)日:2000-06-20

    申请号:JP34917298

    申请日:1998-12-08

    Abstract: PROBLEM TO BE SOLVED: To prepare a reinforced polyacetal resin composition improved in mechanical characteristics and creep one without lowering abrasion-resistant characteristics or the like by including a specific resin and a specific layered silicate and by specifying inorganic ash content. SOLUTION: The objective reinforced polyacetal resin composition is prepared by including (A) a polyacetal resin and (B) an expansive layered silicate, and, if needed, (C) a flame retardant, (D) a hindered phenol-based antioxidant and a hindered amine composition and (E) a scavenger for formaldehyde, or the like and by making inorganic ash content become 0.1-40 wt.%. The ingredient A is a homopolymer or a copolymer. The ingredient A preferably has 1.0-50 g/(10 min) melt flow rate according to the ASTMD 1,238 method. The ingredient B has (2:l)-type structure having one plate crystal layer formed by the stacking of tetrahedral silicic acid sheets on both surfaces of a octahedral sheet including an element such as Al, Mg or Li and has exchangeable cations between the crystal layers.

    POLYAMIDE RESIN COMPOSITION FOR BLOW MOLDING AND MOLDING PRODUCT OF BLOW MOLDING

    公开(公告)号:JP2000154315A

    公开(公告)日:2000-06-06

    申请号:JP26462199

    申请日:1999-09-17

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition having excellent blow moldability, capable of reducing weight, having excellent heat resistance and mechanical properties by melting and kneading a polyamide resin with a laminar silicate. SOLUTION: This composition comprises (A) a polyamide resin and (B) a laminar silicate and satisfies equation I and equation II [Tm is the melting point ( deg.C) of the polyamide; T is a temperature equal to or higher than (Tm+10 deg.C) and equal to or lower than (Tm+70 deg.C); μa 10 is a melt viscosity (poise) at T deg.C at 10 (sec-1) shear rate; μa 1,000 is a melt viscosity (poise) at T deg.C at 1,000 (sec-1) shear rate. The component B is preferably a laminar silicate in which an exchangeable cation existing between layers is replaced with an organic onium ion. Montmorillonite, beidellite, nontronite, saponite, etc., may be cited as the component B. The composition is obtained by kneading the component A with the component B n a molten state.

    PREPARATION OF THERMOPLASTIC RESIN COMPOSITION

    公开(公告)号:JP2000135713A

    公开(公告)日:2000-05-16

    申请号:JP31124498

    申请日:1998-10-30

    Abstract: PROBLEM TO BE SOLVED: To obtain a thermoplastic resin compsn. wherein a lamellar silicate is uniformly dispersed in a thermoplastic resin and whose amt. of gas generation is less at higher temp. or during retention under molten state. SOLUTION: When a thermoplastic resin A and a swelling lamellar silicate B are melted and kneaded by using a melt kneader wherein at least one vent hole 4 is installed, the resin compsn. under molten state is brought into contact with water content C and is melted and kneaded and in addition, water content is removed by bringing at least one vent hole 4 installed in the melt kneader into under vacuum.

    POLYAMIDE RESIN COMPOSITION AND ITS PRODUCTION

    公开(公告)号:JP2000129120A

    公开(公告)日:2000-05-09

    申请号:JP30017298

    申请日:1998-10-21

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject polyamide resin composition that can suppress the decomposition of organic substances distributing between the silicate salt layers and can retain the rigidity of a high level by exchanging the exchangeable metal ions distributing between the layers of laminar silicate salt with a specific organic substance. SOLUTION: (A) A polyamide resin (preferably nylon 6 or nylon 66) and (B) a laminar silicate salt in which the exchangeable metal ions distributing between the layers are exchanged with a polyamide of which the amino terminal groups are ionized (preferably an amino terminal-ionized and alcohol-soluble polyamide) are melt-kneaded to give the objective composition. The inorganic ash content in this composition is 0.1-40 wt.%. In a preferred embodiment, the polyamide bearing ionized amino terminals is selected from a nylon 6/nylon 66 copolymer and the like. The component B is prepared by dissolving a polyamide resin in an alcohol, adding acidic water to the polyamide solution to ionize the amino terminal groups and the ionized polyamide is mixed with the laminar silicate salt.

    POLYAMIDE RESIN COMPOSITION AND ITS PRODUCTION

    公开(公告)号:JP2000119516A

    公开(公告)日:2000-04-25

    申请号:JP29431298

    申请日:1998-10-15

    Abstract: PROBLEM TO BE SOLVED: To obtain a polyamide resin composition having improved mechanical properties by melting and kneading a polyamide resin with a laminar silicate and an organic onium salt and forming an ionic bond between the laminar silicate and the polyamide. SOLUTION: This composition is obtained by melting and kneading 100 pts.wt. of at least one kind of a polyamide resin selected from nylon 6 and nylon 66 with 0.01-10 pts.wt. of an organic onium salt and a laminar silicate containing an exchangeable metal ion existing between layers, replaced with an organic onium ion composed of a 11-30C organic ammonium salt so as to make the amount of the silicate 0.1-50 pts.wt. calculated as an inorganic ash in the composition. The polyamide resin composition comprises >=40 pts.wt. total amino terminal group in the polyamide resin, subjected to ionic bond with the silicate and >=40 wt.% total carboxyl terminal group subjected to ionic bond with the organic onium ion.

    LIQUID-CRYSTALLINE POLYESTER RESIN COMPOSITION, ITS PRODUCTION, AND ITS MOLDED ITEM

    公开(公告)号:JPH08231832A

    公开(公告)日:1996-09-10

    申请号:JP5290296

    申请日:1996-03-11

    Abstract: PURPOSE: To obtain a molded item with excellent physical properties and a low anisotropy by sequentially and continuously feeding a liq.-crystalline polyester resin comprising specific four kinds of structural units and specific glass fibers into an extruder, melt mixing them, and molding the resulting compsn. CONSTITUTION: The compsn. is prepd. by filling a liq.-crystalline polyester resin comprising structural units represented by formulas I, II, III, and IV (wherein R1 and R2 are each a group of formula V or V1, etc.) with glass fibers having an average diameter of 3-15μm, an number average length of 0.12-0.25mm, and a wt. average length of 0.25-0.6mm. Pref., structural unit I is derived from p-hydroxybenzoic acid; structural unit II, from dihydroxybiphenyl; structural unit III, from 2,6-dihydroxynaphthalene; and structural unit IV, from terephthalic acid. Pref., the molar ratio of the sum of structural units I and II to structural unit III is (60:40)-(95:5). The resin and the glass fibers are melt mixed with a twin-screw extruder and are fed sequentially and continuously in the oder of the resin and the glass fibers.

    RESIN COMPOSITION
    120.
    发明专利

    公开(公告)号:JPH0853624A

    公开(公告)日:1996-02-27

    申请号:JP18971994

    申请日:1994-08-11

    Abstract: PURPOSE:To provide a resin composition which can give a molding excellent in a balance among heat resistance, rigidity and impact resistance. CONSTITUTION:This composition is one comprising at least three components of 22-89.8wt.% thermoplastic resin (A), 60-10wt.% inorganic filler (B) and 18-0.2wt.% elastic polymer (C) having a glass transition temperature of -20 deg.C or below, wherein at least 30% of the dispersed particles of component C in the composition are present in the form having a common bound a between components B and C.

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