公开(公告)号：US20180037732A1

公开(公告)日：2018-02-08

申请号：US15548994

申请日：2015-11-30

Applicant: Polyplastics Co., Ltd.

Inventor： Akihide SHIMODA ,  Hirokazu KATSUCHI

IPC: C08L59/00 ,  C08K5/101 ,  C08L83/04 ,  C08K5/16 ,  C08K7/08 ,  C08L51/04 ,  C08K3/26 ,  C08K5/13

CPC classification number: C08L59/00 ,  C08K3/26 ,  C08K5/101 ,  C08K5/103 ,  C08K5/13 ,  C08K5/16 ,  C08K5/34922 ,  C08K7/08 ,  C08K2003/265 ,  C08L51/04 ,  C08L51/06 ,  C08L59/04 ,  C08L83/04 ,  F16C31/02 ,  F16C33/201

Abstract: A polyacetal resin composition which not only is highly inhibited from making creaking sounds but also has satisfactory performances with respect to other properties. The polyacetal resin composition includes 100 parts by weight of a polyacetal resin, 0.01-1 part by weight of a hindered phenolic antioxidant, 0.01-1 part by weight of a nitrogenous compound, 0.1-1 part by weight of a graft copolymer, 0.1-1 part by weight of a fatty acid ester, 0.5-5 parts by weight of a silicone oil, and 0.1-1 part by weight of calcium carbonate. The nitrogenous compound may be an aminotriazine compound, the graft copolymer includes an olefin-based polymer as the main chain and a vinyl-based polymer as side chains, the fatty acid ester includes a C12-32 fatty acid and a C2-30 mono- or polyhydric alcohol, and the calcium carbonate has an average particle diameter of 1 μm or smaller.

公开(公告)号：US20200291223A1

公开(公告)日：2020-09-17

申请号：US16082052

申请日：2017-02-06

Applicant: Polyplastics Co., Ltd.

Inventor： Hatsuhiko HARASHINA ,  Hirokazu KATSUCHI

IPC: C08L59/04

Abstract: A polyacetal resin composition which exhibits resistance to hot water, and contains 100 parts by mass of a polyacetal resin, 1 to 100 parts by mass, inclusive, of glass fibers subjected to a surface treatment with a blocked isocyanate compound and an aminosilane coupling agent, and 0.001 to 1.0 parts by mass, inclusive, of boric acid.