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    POLYACETAL RESIN COMPOSITION AND SLIDING MEMBER
    3.
    发明申请
    POLYACETAL RESIN COMPOSITION AND SLIDING MEMBER 审中-公开

    公开(公告)号：US20170306141A1

    公开(公告)日：2017-10-26

    申请号：US15510381

    申请日：2015-06-11

    Applicant: Polyplastics Co., Ltd.

    Inventor： Akihide SHIMODA

    IPC: C08L59/00 ,  F16C33/20

    Abstract: A polyoxymethylene (POM) resin composition which is used for a resin molded article having an excellent sliding characteristic and wear resistance property and also having an excellent surface property and peeling resistance property. This POM resin composition contains: (A) 100 parts by mass of a POM resin; (B) 0.01-1 parts by mass of a hindered phenolic antioxidant; (C) 0.05-1 parts by mass inclusive of a nitrogen-containing compound; (D) 0.5-10 parts by mass of a modified olefin polymer which is an olefin polymer that has been modified by an unsaturated carboxylic acid or the like; (E) 0.01-5 parts by mass of an alkylene glycol polymer that has a primary or secondary amino group and a number average molecular weight of 400-500,000; (F) 0.1-20 parts by mass of calcium carbonate which has a BET specific surface area of 15 m2/g or less, has a mean particle size of 50-200 nm or less, is surface-untreated, and is substantially cubic; (G) 0.1-10 parts by mass of a partial ester of a divalent to tetravalent alcohol; and (H) 0.1-10 parts by mass of an α-olefin oligomer.

    SULFUR-CONTAINING FUEL CONTACT BODY PROVIDED WITH MOLDED ARTICLE INCLUDING POLYACETAL RESIN COMPOSITION HAVING INCREASED ACID RESISTANCE
    4.
    发明申请
    SULFUR-CONTAINING FUEL CONTACT BODY PROVIDED WITH MOLDED ARTICLE INCLUDING POLYACETAL RESIN COMPOSITION HAVING INCREASED ACID RESISTANCE 审中-公开
    含有硫化物燃料的模具制品提供接触体，包括具有增加耐酸性的聚乙烯树脂组合物

    公开(公告)号：US20160251509A1

    公开(公告)日：2016-09-01

    申请号：US15149952

    申请日：2016-05-09

    Applicant: Polyplastics Co., Ltd.

    Inventor： Akihide SHIMODA ,  Satomi NAKADA ,  Yasumitsu MIYAMOTO ,  Hidemi KONDO

    IPC: C08L59/04 ,  C08J7/14

    CPC classification number: C08L59/04 ,  C08J7/14 ,  C08J2359/02 ,  C08K3/22 ,  C08K5/103 ,  C08K5/134 ,  C08K5/1345 ,  C08K2003/222 ,  C08L71/02 ,  C08L2201/08 ,  F02M2200/9015

    Abstract: A polyacetal resin composition makes it possible, when formed into a molded article, to minimize deterioration during contact with sulfur-containing fuel or an acidic detergent. The polyacetal resin composition contains (A) 100 parts by weight of polyacetal resin, (B) 0.1-1.0 parts by weight of hindered phenolic antioxidant, (C) 0.1-2.0 parts by weight of alkaline earth metal oxide, (D) 0.5-3.0 parts by weight of polyalkylene glycol, and (E) 0.01-1.0 parts by weight of polyvalent fatty acid full ester. This polyacetal resin composition minimizes reductions in the weight of a molded article even after the molded article has been immersed in sulfur-containing fuel.

    Abstract translation: 聚缩醛树脂组合物可以在形成模塑制品时使与硫含量燃料或酸性洗涤剂接触时的劣化最小化。 聚缩醛树脂组合物含有（A）100重量份的聚缩醛树脂，（B）0.1-1.0重量份的受阻酚类抗氧化剂，（C）0.1-2.0重量份的碱土金属氧化物，（D） 3.0重量份聚亚烷基二醇，和（E）0.01-1.0重量份多价脂肪酸全酯。 即使在模制品浸入含硫燃料中之后，该聚缩醛树脂组合物也使模制品的重量减少最小化。

    METHOD FOR PRODUCING POLYACETAL RESIN COMPOSITION
    5.
    发明申请
    METHOD FOR PRODUCING POLYACETAL RESIN COMPOSITION 有权

    公开(公告)号：US20170349742A1

    公开(公告)日：2017-12-07

    申请号：US15538008

    申请日：2015-11-09

    Applicant: Polyplastics Co., Ltd.

    Inventor： Tadahiro HORIGUCHI ,  Akihide SHIMODA

    IPC: C08L59/04

    CPC classification number: C08L59/04 ,  C08G2/20 ,  C08L2205/025

    Abstract: A polyacetal resin composition which is suppressed low in formaldehyde generation, while having high stiffness and high toughness. The resin is produced by a method including blending from 0.1 part by weight to 2 parts by weight (inclusive) of a polyacetal copolymer having a branched or crosslinked structure, which is a copolymer of a trioxane, a compound having from 3 to 4 (inclusive) cyclic ether units in each molecule and a compound having one cyclic ether unit in each molecule, per 100 parts by weight of a linear polyacetal copolymer which contains an oxymethylene unit as a main constituent, while containing, as a comonomer unit, an oxyalkylene unit at a ratio of from 0.4% by mole to 0.9% by mole (inclusive) relative to the constituents of the linear polyacetal copolymer, the linear polyacetal copolymer being obtained by copolymerization wherein a heteropolyacid or the like is used as a polymerization catalyst.

    POLYACETAL RESIN COMPOSITION AND SLIDING MEMBER
    7.
    发明申请
    POLYACETAL RESIN COMPOSITION AND SLIDING MEMBER 审中-公开

    公开(公告)号：US20170283608A1

    公开(公告)日：2017-10-05

    申请号：US15510092

    申请日：2015-06-11

    Applicant: Polyplastics Co., Ltd.

    Inventor： Akihide SHIMODA

    IPC: C08L59/00 ,  F16C33/20

    CPC classification number: C08L59/00 ,  C08K3/26 ,  C08K5/103 ,  C08K5/13 ,  C08K5/16 ,  C08L23/02 ,  C08L23/26 ,  C08L71/02 ,  C08L2205/03 ,  F16C33/20 ,  F16C33/201 ,  F16C2208/66

    Abstract: A polyoxymethylene (POM) resin composition which is used for a resin molded article having a superior sliding characteristic. The POM resin composition contains: (A) 100 parts by mass of a POM resin; (B) 0.01-1 parts by mass of a hindered phenolic antioxidant; (C) 0.05-1 parts by mass of a nitrogen-containing compound; (D) 0.5-10 parts by mass of a modified olefin polymer; (E) 0.01-5 parts by mass of an alkylene glycol polymer; (F) 0.1-20 parts by mass of calcium carbonate; (G) 0.1-10 parts by mass of a partial ester of a polyhydric alcohol; and (H) 0.1-10 parts by mass of an a-olefin oligomer. An ISO tensile test piece, which is obtained by injection molding at a die temperature of 90° C. and a cylinder temperature of 200° C., is crushed, Soxhlet extraction is performed for 3 hours at 70° C. using methanol, and the alkylene glycol polymer is measured. The weight of the alkylene glycol polymer is 0.001 wt % or less relative to 100 wt % of the test piece.

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