摘要:
A resin molding having welding properties, flexibility, and shock impact resistance in a balanced manner. The resin molding has a welded seam, consisting of a resin composition, wherein the resin composition comprises (a) a polyphenylene sulfide resin and (b) an olefin based resin: wherein an amount of the (a) polyphenylene sulfide resin and the (b) olefin based resin is 80 weight % or more of the entire resin composition, and the content of the (b) olefin based resin is 10 to 100 parts by weight relevant to 100 parts by weight of the (a) polyphenylene sulfide resin, and wherein the tensile elongation at break is 20% or more.
摘要:
An object of the present invention is to provide a fuel system part with excellent fuel permeation resistance, and excellent shock impact resistance and heat resistance. A fuel system part consists of a resin composition, wherein the resin composition includes (a) a polyphenylene sulfide resin and (b) an olefin based resin, wherein an amount of the (a) polyphenylene sulfide resin and the (b) olefin based resin is 80 weight % or more of the entire resin composition and the content of the (b) olefin based resin is 10 to 100 parts by weight relevant to 100 parts by weight of the (a) polyphenylene sulfide resin, and wherein the resin composition has a fuel permeability coefficient (Fuel C/ethanol=90/10) of 3.3×10−16 mol·m/m2·s·Pa or less at 40° C.
摘要:
An oscillating actuator is provided which includes a coil-holding member, and a carriage member. The carriage member has a bearing hole and at least one arm, and the at least one arm has a head portion and an intermediate portion arranged between the head portion and the bearing hole. In addition, a thickness of the intermediate portion in a normal direction, perpendicular to a width of the carriage member, is smaller than a thickness of the head portion in the normal direction. The oscillating actuator having this structure exhibits excellent dimensional stability when used in a disk apparatus, and can be produced easily and economically.
摘要:
The present invention provides an apparatus for producing an aromatic polyester, comprising a reactor, a rectifying column, a distillation pipe for feeding distillate gas from the reactor to the rectifying column, and a liquid returning pipe for returning reflux liquid from the rectifying column to a reactor, wherein the ratio of (b) the inside diameter of pipe of the liquid returning pipe to (a) the maximum inside diameter of drum of the reactor, (b)/(a), is 0.012 to 0.12. The production apparatus has an efficient rectifying effect and is suitable for producing an aromatic polyester having an excellent heat resistance and color tone efficiently with good polymerizability and at low cost.
摘要:
The present invention provides a process for producing a liquid crystalline polyester resin, wherein an acetylation reaction and an oligomerization reaction of raw materials are carried out in an acetylation reaction vessel, and then a deacetylation polycondensation of a liquid after the oligomerization reaction is carried out in a polycondensation reaction vessel, wherein the acetylation reaction vessel used is a vessel having an inner wall surface composed of an alloy containing 50% by mass or more of Ni and 10% by mass or more of Mo; and the inner wall surface of the acetylation reaction vessel is divided into three or more band-like zones arrayed in the height direction of the vessel, and the oligomerization reaction is carried out while maintaining the temperatures of each band-like zone in a particular relationship.
摘要:
The present invention provides a process for producing a liquid crystalline polyester resin, wherein an acetylation reaction and an oligomerization reaction of raw materials are carried out in an acetylation reaction vessel, and then a deacetylation polycondensation of a liquid after the oligomerization reaction is carried out in a polycondensation reaction vessel, wherein the acetylation reaction vessel used is a vessel having an inner wall surface composed of an alloy containing 50% by mass or more of Ni and 10% by mass or more of Mo; and the inner wall surface of the acetylation reaction vessel is divided into three or more band-like zones arrayed in the height direction of the vessel, and the oligomerization reaction is carried out while maintaining the temperatures of each band-like zone in a particular relationship.