摘要:
The invention provides an olefinic thermoplastic elastomer composition which is excellent in flexibility, processability into sheet and appearance of the resulting sheet and which is able to substitute for flexible polyvinyl chloride. The invention further provides a covering material for industrial parts comprising said composition and a laminate comprising said covering material.The composition comprises a partially crosslinked thermoplastic elastomer I containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 200-350 or the thermoplastic elastomer I and a partially crosslinked thermoplastic elastomer II containing an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a Mooney viscosity of 120 or higher and lower than 200 and the composition has a specific viscoelastic characteristics.
摘要:
The present invention provides a thermoplastic elastomer composition having high thermal resistance. It comprises a thermoplastic graft copolymer of which main chain is constituted by a polymer having a glass transition temperature of 10.degree. C. or blow and side chain is constituted by an aromatic oligomer having a flow temperature of 100.degree. C. or above, and an olefinic polymer.
摘要:
An olefinic thermoplastic elastomer composition which is excellent in mechanical properties and is substitutable for vulcanized rubbers is provided, which comprises a mixture comprising (A) 40-95% by weight of an oil-extended olefinic copolymer rubber comprising 100 parts by weight of an olefinic copolymer rubber having a Mooney viscosity (ML.sub.1+4 100.degree. C.) of 150-350 and 20-150 parts byw eight of a mineral oil and (B) 5-60% by weight of an olefinic plastic, said mixture being partially crosslinked by dynamic heat treatment in the presence of an organic peroxide. This composition gives superior molded articles free from bleeding of oil on the surface.
摘要:
A process for the polymerization of an olefin which comprises polymerizing an olefin in the presence of a catalyst system consisting essentially of(A) an organoaluminum compound represented by the formula: AlR.sub.m.sup.1 X.sub.3-m.sup.1 wherein R.sup.1 is a hydrocarbon group having 1 to 8 carbon atoms, X.sup.1 is a halogen atom or an alkoxy group having 1 to 8 atoms and m is a number in the range of 1 to 3,(B) a product prepared by the reaction of (i) a titanium compound selected from the group represented by the formula: Ti(OR.sup.2).sub.p X.sub.q.sup.2 wherein R.sup.2 is a hydrocarbon group having 1 to 8 carbon atoms, X.sup.2 is a halogen atom and p and q are each a number satisfying the following ranges: 0.ltoreq.p.ltoreq.4, 0.ltoreq.q.ltoreq.4 and p+q=3 or 4, with (ii) a reaction product in a hydrocarbon solvent of a Lewis base selected from the group consisting of ethers, esters of carboxylic acids and phosphite compounds with a solid organomagnesium halide which is obtained by the reaction of magnesium and a halogenated hydrocarbon compound represented by the formula: R.sup.3 X.sup.3 wherein R.sup.3 is a hydrocarbon group having 1 to 20 carbon atoms and X.sup.3 is a halogen atom in an hydrocarbon solvent, and has a general formula: MgR.sub.l.sup.3 X.sub.2-l.sup.3 wherein R.sup.3 and X.sup.3 are as defined above and is a number in the range of 1.5.gtoreq.l.gtoreq.0.005, and optionally(C) an ester of a carboxylic acid in an amount of up to 1 mole per 1 mole of the organoaluminum compound (A).
摘要:
A multilayer molded article having a body of a thermoplastic resin and a skin material which is laminated on a surface of said body and made of an olefin thermoplastic elastomer having 100% modulus (M100) at 23.degree. C. of from 20 to 60 kg/cm.sup.2 and a frictional resistance (tan .delta.) against a metal surface of 1.0 or lower which is backed with a foam layer, which has good appearance and also good weather resistance.
摘要翻译:一种多层模制品,其具有热塑性树脂体和表层材料,其层压在所述主体的表面上并由在23℃下的100%模量(M100)为20至60kg / m 2的烯烃热塑性弹性体制成, cm2,相对于1.0以下的金属表面的摩擦阻力(tanδ),其背面具有良好的外观和耐候性。
摘要:
A thermoplastic elastomer powder for powder molding, comprising an elastomer composition of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, wherein said elastomer composition has a complex dynamic viscosity .eta.*(1) as measured at frequency of 1 radian/sec. in dynamic viscoelasticity measurement at 250.degree. C., of 1.5.times.10.sup.5 poise or less, a Newtonian viscosity index n calculated from the following formula by using the complex dynamic viscosity .eta.*(1) at a frequency of 1 radian/sec. and the complex dynamic viscosity .eta.*(100) at a frequency of 100 radian/sec. of 0.67 or less, and a hardness (shore D) of 45 or less:n={log.eta.*(1)-log.eta.*(100)}/2.
摘要翻译:一种用于粉末成型的热塑性弹性体粉末,包括乙烯-α-烯烃共聚物橡胶和聚烯烃树脂的弹性体组合物,其中所述弹性体组合物具有以1弧度/秒的频率测量的复合动态粘度η(1)。 在250℃的动态粘弹性测定中为1.5×10 5泊以下,通过以1弧度/秒的频率使用复数动态粘度η(1)由下式算出的牛顿粘度指数n。 和100弧度/秒的频率下的复数动态粘度eta *(100)。 为0.67以下,硬度(Shore D)为45以下:n = {log eta *(1)-log eta *(100)} / 2。
摘要:
A blend which comprises a partially crosslinked product of a mixture of an oil-extended olefinic copolymer rubber comprising an olefinic copolymer rubber having a 100.degree. C. Mooney viscosity 150-350, a polyolefin resin, a selectively hydrogenated block copolymer, and a specific mineral oil type softening agent has excellent flexibility of less than 45 in Shore A hardness. The blend is not tacky, nor does the softening agent bleed. An anti-static agent for polyolefins and/or a higher fatty acid amide may be included in the composition.
摘要:
An emulsion comprising a dispersoid dispersed in water together with an emulsifier, wherein the dispersoid is an olefin copolymer containing a structural unit derived from ethylene, linear α-olefin, or ethylene and linear α-olefin, and a structural unit derived from the following vinyl compound (I), or an olefin copolymer modified material obtained by further graft-polymerizing unsaturated carboxylic acids to the olefin copolymer, and the volume-based median diameter of the dispersoid contained in the emulsion is 0.01 to 1 μm. CH2═CH—R (I) (wherein, R in the vinyl compound (I) represents a secondary alkyl group, tertiary alkyl group or alicyclic hydrocarbon group.).
摘要:
A thermoplastic elastomer powder composition for powder molding, comprising 100 parts by weight of the following thermoplastic elastomer powder (A) and 0.05 to 20 parts by weight of a fine powder having an average particle diameter of 30 .mu.m or less:(A) (i) a powder of a thermoplastic elastomer comprising a composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin or (ii) a powder of a thermoplastic elastomer comprising a partially crosslinked composition composed of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, the thermoplastic elastomer powder having a complex dynamic viscosity .eta.*(1), as measured at a frequency of 1 radian/sec and at 250.degree. C., of 1.5.times.10.sup.5 poise or less and a Newtonian viscosity index n, calculated from the following formula by using the above-mentioned complex dynamic viscosity .eta.*(1) and the complex dynamic viscosity .eta.*(100) measured at a frequency of 100 radian/sec of 0.67 or less:n=(log.eta.*(1)-log.eta.*(100))/2.
摘要翻译:一种用于粉末成型的热塑性弹性体粉末组合物,包含100重量份的以下热塑性弹性体粉末(A)和0.05〜20重量份的平均粒径为30μm以下的细粉末:(A)( i)包含由乙烯-α-烯烃共聚物橡胶和聚烯烃树脂组成的组合物的热塑性弹性体粉末,或(ii)包含由乙烯-α-烯烃共聚物橡胶组成的部分交联组合物的热塑性弹性体粉末 和聚烯烃树脂,以1弧度/秒和250℃的频率测定的1.5×10 5泊或更小的牛顿粘度指数n,具有复动态粘度eta *(1)的热塑性弹性体粉末, 通过使用上述复数动态粘度eta *(1)和在100弧度/秒的频率为0.67以下测定的复数动态粘度eta *(100)由下式计算:n =(log eta *( 1)-l og eta *(100))/ 2。
摘要:
A multilayer molded article comprising a body of a thermoplastic resin and a skin material which is laminated on a surface of said body and comprises an olefin thermoplastic elastomer having a complex viscosity (.eta.*) of from 1.0.times.104 to 5.0.times.104 poises at 200.degree. C. and a vibrational angular velocity of 100 rad/sec. and a Newtonean viscosity index (n) of from 0.6 to 0.8 in a vibrational angular velocity range between 50 and 200 rad/sec. both measured by a dynamic viscoelasticity measurement, which has good appearance.