摘要:
A propylene resin composition includes 0 to 80 wt % of a propylene polymer (A) having a DSC melting point of not less than 100° C., 5 to 85 wt % of a specific soft propylene copolymer (B), 0 to 40 wt % of one or more elastomers (C) selected from ethylene elastomers (C1) and styrene elastomers (C2), and 15 to 80 wt % of an inorganic filler (D) (the total of (A), (B), (C) and (D) is 100 wt %) The propylene resin composition contains the inorganic filler at a high proportion and shows excellent flexibility as well as high breaking elongation, low-temperature properties, whitening resistance, scratch resistance, abrasion resistance, stress absorption properties and flame retardancy.
摘要:
In a hydraulic shock absorber having a variable damping force characteristic structure, at least one extension phase one-way passageway and one compression phase one-way passageway are formed in a piston body so as to allow a fluid flow to be communicated between a first chamber and a second chamber in the extension and compression phases, respectively, and a grooved control rod forms a control valve element rotatably disposed in a hollow rod extended in a cylinder containing damping fluid. Extension and compression phase throttles are formed in the extension and compression phase one-way passageways by ports radially penetrated through a side wall of the hollow rod and the grooved control rod whose fluid cross sectional areas are varied according to a rotated position of the grooved control rod. In addition, four disc-shaped damping valves are formed in an interior of the cylinder.
摘要:
It is an object to provide a lubricating oil composition having low-temperature properties and fuel efficiency at high temperatures which are superior to those of conventional lubricating oil compositions, and to provide a viscosity modifier for lubricating oils and an additive composition for lubricating oils which are used for obtaining said composition. The viscosity modifier for lubricating oils of the present invention comprises a propylene copolymer (A) which has a density of 875 kg/m3 or less and which comprises 60 mole % or more of structural unit derived from propylene.
摘要翻译:本发明的目的是提供一种在高温下的低温性能和燃料效率优于常规润滑油组合物的润滑油组合物,并提供用于润滑油的粘度改进剂和用于润滑油的添加剂组合物, 用于获得所述组合物。 本发明的润滑油用粘度调节剂含有密度为875kg / m 3以下的丙烯共聚物(A),其含有60摩尔%以上的来自丙烯的结构单元。
摘要:
In a packaging material for electrochemical cell, a thermally adhesive resin layer is configured of a resin having a propylene based elastomer resin in a propylene based resin. This propylene based elastomer resin is a copolymer composed of a constitutional unit derived from propylene and a constitutional unit derived from an α-olefin having from 2 to 20 carbon atoms; when the total sum of the constitutional unit derived from propylene and the constitutional unit derived from an α-olefin is defined as 100% by mole, contains 50% by mole or more of the constitutional unit derived from propylene; and is satisfied with (a) a Shore A hardness (ASTM D2240) of from 65 to 90, (b) a melting point of from 130 to 170° C., (c) a density (ASTM D1505) of from 860 to 875 kg/m3 and (d) a glass transition temperature as measured by DSC of from −25° C. to −35° C.
摘要翻译:在电化学电池用包装材料中,热粘合性树脂层由在丙烯系树脂中具有丙烯类弹性体树脂的树脂构成。 该丙烯类弹性体树脂是由来自丙烯的结构单元和来自具有2〜20个碳原子的α-烯烃的结构单元构成的共聚物; 当从丙烯衍生的结构单元和由α-烯烃衍生的结构单元的总和定为100摩尔%时,含有来自丙烯的结构单元的50摩尔%以上; 并且(a)肖氏A硬度(ASTM D2240)为65至90,(b)熔点为130至170℃,(c)密度(ASTM D1505)为860至875 kg / m 3和(d)通过DSC测量的-25℃至-35℃的玻璃化转变温度。
摘要:
The present invention provides a thermoplastic resin composition that gives a solar cell sealing sheet having, even without being crosslinked, good mechanical strength, solar cell sealability, transparency, and weatherability.The thermoplastic resin composition of the present invention comprises 1 to 95% by weight of a propylene-based polymer (A) and 5 to 99% by weight of a copolymer (B) with at least one α-olefin having 2 to 20 carbon atoms other than propylene, wherein (A) satisfies the following (i) and (ii), and (B) has a melting point below 80° C. or does not show a melting point as measured by a differential scanning calorimeter (DSC). (i) Melting point measured by a differential scanning calorimeter (DSC) method is in the range of 80 to 135° C. (ii) Endotherm attributable to crystal melting is not observed at 140° C. or more in the endothermic curve measured by a differential scanning calorimeter (DSC) method.
摘要:
An object of the present invention is to provide a material used for producing a sheet for sealing a solar cell which is excellent in mechanical strength, solar cell sealing property and transparency if the material is not cross-linked.The thermoplastic resin composition of the present invention for sealing a solar cell is characterized by comprising: (A) 0 to 70 parts by weight of a propylene-based polymer having a melting point of 100° C. or higher and (B) 30 to 100 parts by weight of a propylene-based copolymer satisfying the following requisite (b); (b): MFR (230° C., load: 2.16 kg) falls in a range of 0.01 to 100 g/10 minutes, and at least one of the following requisites (b-1) and (b-2) is satisfied; (b-1): an rr fraction is 60% or more and (b-2): a structural unit derived from propylene is contained in an amount of 55 to 90 mole %, and a structural unit derived from α-olefin having 2 to 20 carbon atoms (excluding propylene) is contained in an amount of 10 to 45 mole %; and an intrinsic viscosity [η] (dL/g) measured in decalin at 135° C. and MFR described above satisfy a specific relational equation.
摘要:
A suspension control system for an automotive vehicle is provided. This suspension control system comprises front and rear variable damping force shock absorbers and a control unit which controls the shock absorbers to assume damping force characteristics in a range between preselected higher and lower damping coefficients. The control unit controls the front and rear shock absorbers in a manner wherein the damping force characteristics of the front shock absorber in an extension stroke and of the rear shock absorber in a compression stroke are modified to the higher damping coefficients respectively when vehicle speed is substantially zero.
摘要:
Propylene-based polymers (A) are provided which, when used as pressure-sensitive adhesives to various adherends, show a desired initial adhesion and will not contaminate the adherends and which have excellent pellet handling properties. Pellets of the invention contain the propylene-based polymers (A). Pressure-sensitive adhesives of the invention contain the propylene-based polymers (A). The propylene-based polymer (A) includes 65 to 80 mol % of a structural unit derived from propylene, 5 to 10 mol % of a structural unit derived from ethylene and 15 to 25 mol % of a structural unit derived from a C4-20 α-olefin (wherein these percentages are calculated based on 100 mol % of the total of the structural unit derived from propylene, the structural unit derived from ethylene and the structural unit derived from a C4-20 α-olefin) and has a heat of crystal fusion of 5 to 45 (J/g) as measured by DSC. Compositions of the invention contain the propylene-based polymers (A).
摘要:
A material which is excellent in mechanical strength, solar cell sealing properties, transparency, etc., even in an uncrosslinked state and is used in producing a sheet for solar cell sealing. The thermoplastic resin composition for solar cell sealing comprises (A) 0-70 wt. % propylene polymer having a melting point of 100° C. or higher and (B) 30-100 wt. % propylene copolymer satisfying the following requirements (b). (b) The copolymer has an MFR (230° C., 2.16-kg load) in the range of 0.01-100 g/10 min and satisfies at least one of the following requirements (b-1) and (b-2): (b-1) the rr content is 60% or higher; and (b-2) the copolymer comprises 55-90 mol % structural units derived from propylene and 10-45 mol % structural units derived from a C2-20 α-olefin (excluding propylene) and has an intrinsic viscosity [η] (dL/g) (measured in 135° C. decalin) satisfying a specific relationship with the MFR.
摘要:
A propylene resin composition includes 0 to 80 wt % of a propylene polymer (A) having a DSC melting point of not less than 100° C., 5 to 85 wt % of a specific soft propylene copolymer (B), 0 to 40 wt % of one or more elastomers (C) selected from ethylene elastomers (C1) and styrene elastomers (C2), and 15 to 80 wt % of an inorganic filler (D) (the total of (A), (B), (C) and (D) is 100 wt %) The propylene resin composition contains the inorganic filler at a high proportion and shows excellent flexibility as well as high breaking elongation, low-temperature properties, whitening resistance, scratch resistance, abrasion resistance, stress absorption properties and flame retardancy.