VIBRATION WELDING RESIN COMPOSITION AND FORMED ARICLE

    公开(公告)号:JP2000095948A

    公开(公告)日:2000-04-04

    申请号:JP26703898

    申请日:1998-09-21

    Abstract: PROBLEM TO BE SOLVED: To provide welding resin compositions which are proportionately excellent in heat stability, external appearance of molded articles, mechanical strength and vibration weldability and are suitable for hollow products which can be obtained by the vibration welding of two or more molded articles after melt molding. SOLUTION: Vibration welding resin compositions comprise (A) 100 pts.wt. thermoplastic resin and (B) 0.1-50 pts.wt. layer silicate which is a swelling layer silicate and vibration welding resin compositions comprise (A) 100 pts.wt. thermoplastic resin, (B) 0.1-50 pts.wt. layer silicate which is a swelling layer silicate, and (C) 10-150 pts.wt. glass fibers having an average fiber diameter of 5-15 μm. Further, the layer silicate (B) is the one in which exchangeable cationic ions present between layers have been exchanged with organic onium ions, and the thermoplastic resin (A) is at least one resin selected from a polyamide resin, a polyester resin, and a polyphenylene sulfide resin.

    LIQUID CRYSTALLINE RESIN COMPOSITION

    公开(公告)号:JP2000080289A

    公开(公告)日:2000-03-21

    申请号:JP25308198

    申请日:1998-09-07

    Abstract: PROBLEM TO BE SOLVED: To obtain a liquid crystalline resin composition excellent in weld strength, dimensional stability and balance between rigidity and tenacity, and having only a low degree of anisotropy in mold shrinkage by kneading a liquid crystalline resin, inorganic filler and a specific compound (or polymer) in a molten state. SOLUTION: This liquid crystalline resin composition is obtained by kneading (A) 100 pts.wt. liquid crystalline resin (pref. a liquid crystalline polyester, a liquid crystalline polyesteramide, or the like), (B) 5-400 pts.wt. inorganic filler and (C) 0.05-10 pts.wt. olefin compound (or polymer), pref. (poly)maleic anhydride, having carboxylic anhydride group in a molecule in a molten state. The ingredient B is pref. non-fibrous inorganic filler having 0.05-10 μm average particle diameter or fibrous inorganic filler having 0.05-10 μm fiber diameter, and is pref. fibrous calcium carbonate, (fibrous) wollastonite, talc, clay, kaolin, silica or the like.

    PRODUCTION OF RESIN COMPOSITION REINFORCED WITH COMPOSITE PARTICLE

    公开(公告)号:JPH09216910A

    公开(公告)日:1997-08-19

    申请号:JP2450496

    申请日:1996-02-09

    Abstract: PROBLEM TO BE SOLVED: To obtain a resin composition reinforced with composite particles, excellent in rigidity, heat resistance, impact resistance, toughness, etc., by melt kneading a thermoplastic resin and an inorganic filler coated with an elastic polymer in the presence of a reactive compatible modifier. SOLUTION: An inorganic filler (e.g. silica) is coated with an elastic polymer having a glass transition temperature of -10 deg.C or lower (e.g. poly-n-butyl acrylate) to produce composite particles. The composite particles and a thermoplastic resin (e.g. polyester resin) are melt kneaded in the presence of a reactive compatible modifier (e.g. maleic anhydride) to give a resin composition which consists of a thermoplastic resin, an inorganic filler, an elastic polymer having a glass transition temperature of -10 deg.C or lower, and a reactive compatible modifier and comprises one reinforced with composite particles and wherein at least 30% of the dispersed particles of the elastic polymer are present in interfacial contact with the inorganic filler. The composition is suitable for engineering parts, structural material, etc.

    COMPOSITE POLYESTER MATERIAL AND ITS PRODUCTION

    公开(公告)号:JPH0948908A

    公开(公告)日:1997-02-18

    申请号:JP13496896

    申请日:1996-05-29

    Abstract: PROBLEM TO BE SOLVED: To provide a composite polyester material improved in rigidity, strengths, heat resistance, toughness, processability and surface appearance by dispersing an organic-modified product (B) of a layered compound having a cation exchange capacity in a thermoplastic polyester (A) in the form of single layers. SOLUTION: A composite polyester material comprising 100 pts.wt. component A and 0.5-10 pts.wt. component B, wherein component B has an average gravity center distance of 80Å or above and a content of aggregates of below 0.5 pt.wt. per 100 pts.wt. component A is provided. Component A is a high-molecular- weight thermoplastic resin (e.g. polybutylene terephthalate) having ester linkages in the main chain. Component B is the one prepared by ion-exchanging the interlaminar metallic cations of a layered compound for organic cations. This is produced by ion-exchanging the metallic ions of a layered compound (e.g. montmorillonite) for organic cations (e.g. 12-aminododecanoate ions), adding the ion-exchanged product to a polyester-forming monomers, applying force (e.g. ultrasonic waves) of increasing the interlaminar distance to sufficiently introduce the monomers among the layers and polymerizing the monomers.

    FLAME-RETARDANT LIQUID CRYSTALLINE POLYESTER COMPOSITION

    公开(公告)号:JPH05140421A

    公开(公告)日:1993-06-08

    申请号:JP30892291

    申请日:1991-11-25

    Abstract: PURPOSE:To prepare the subject compsn. excellent in the resistance to falling of granules during burning, heat resistance, and mechanical properties by compounding a specific liq. crystalline polyester with an org. Br compd. and a specific phosphonite compd. CONSTITUTION:100 pts.wt. liq. crystalline polyester comprising structural units of formula I, II, III, or IV (wherein X is a group of formula V, a group of formula V and formula VI, of CH2CH2; and Y indicates at least one kind of group selected from among those of formulas VI to IX) is compounded with 0.5-30 pts.wt. org. Br compd. (e.g. polydibromostyrene) and 0.001-5 pts.wt. phosphonite compd. of formula X[wherein R to R are each 1-25C alkyl, substd. alkyl, or (substd.)aryl; and R is 1-33C alkylene, substd. alkylene, or (substd.) alylene].

    MOLDED FOAM
    98.
    发明专利

    公开(公告)号:JPH0517609A

    公开(公告)日:1993-01-26

    申请号:JP17267891

    申请日:1991-07-12

    Abstract: PURPOSE:To obtain a molded foam usable as a lightweight engineering material which has an excellent balance between mechanical properties and heat resistance and is uniform in foam structure and mechanical property by subjecting a specific copolyester to foam molding. CONSTITUTION:Foam molding is conducted using a copolyester or a composition obtained by mixing a copolyester with at least one ingredient selected from a filler, an organic-polymer flame retardant, and a thermoplastic polymer. The copolyester is constituted by the structural units shown by formulae I to IV, with units I and II accounting for 80-93mol% of units I, II, and III, unit III accounting for 20-7mol% of units I, II, and III, and the molar ratio of unit I to unit II being 78:22 to 3:7. The copolyester has a melting point (Tm, deg.C) satisfying relation V (wherein X is the proportion (mol%) of unit III to units I, II, and III), has an inherent viscosity of 1.0-3.0dl/g, and shows melt anisotropy. Thus, a molded foam is obtained which has been greatly improved in anisotropy to show good isotropy in mechanical property and is useful as a lightweight engineering material.

    TUBULAR MOLDED BODY
    99.
    发明专利

    公开(公告)号:JPH054292A

    公开(公告)日:1993-01-14

    申请号:JP15489591

    申请日:1991-06-26

    Abstract: PURPOSE:To improve especially thermal aging resistance and durability, by a method wherein a tubular molded body such as a tube or a hose superior in mechanical and sliding properties at the time of a high temperature is manufactured by molding copolymer polyester containing a structural unit expressed by a specific formula. CONSTITUTION:This tubular molded body is made into a molded product of copolymer polyester comprised of a structural unit of polyester formed of p- hydroxybenzoic acid expressed by a formula I, a structural unit formed of 4, 4-dihydroxy biphenyl expressed by a formula II, a structural unit formed of ethylene glycol expressed by a formula III and a structural unit formed of terephthalic acid expressed by a formula IV. On this occasion, the structural units (I+II) and (I+II+III) are made respectively 80-93mol% of the (I+II+III) and 20-7mol% of the (I+II+III). Then a matter whose mol ratio of the structural unit I/III becomes 78/22-93/7 and logarithmic viscosity becomes 1.0-3.0dl/g is used as the copolymer polyester.

    LIQUID CRYSTAL POLYESTER RESIN COMPOSITION AND ITS FORMED ARTICLE

    公开(公告)号:JPH04337348A

    公开(公告)日:1992-11-25

    申请号:JP10908291

    申请日:1991-05-14

    Abstract: PURPOSE:To obtain the subject resin composition having excellent heat-resistance, moldability and surface appearance and small anisotropy of mechanical properties by filling carbon fibers having a specific average fiber diameter into a liquid crystal polyester resin composed of a specific structural unit. CONSTITUTION:The objective resin composition is produced by kneading (A) 100 pts. wt. of a liquid crystal polyester resin having a melting point (Tm deg.C) satisfying the formula IX (X is mol% of the group of formula III based on the sum of the groups of formula I, formula II and formula III) and a logarithmic viscosity of 1-3 di/g and composed of structural units of formula I to formula TV (R1 is group of formula V, formula VI, etc.; R2 is group of formula VII, formula VIII, etc.), preferably R1 is group of formula VI, R2 is group of formula VII, the ratio of (I+II)/(I+II+III) is 60-95mol%, III/(I+II+III) is 40-5mol% and the molar ratio of I/II is 75/25 to 95/5 and (B) 5-200 pts.wt. of carbon fiber having an average fiber diameter of 3-15mum using a twin screw extruder under melting at a temperature between Tma and Tma+20 deg.C (Tma is melting point of the component A). The number average fiber distance of the component B in the composition is 0.05-0.25mm, the weight-average fiber length is 0.12-0.5mm and the aspect ratio of the fiber is 10-100.

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