摘要:
Disclosed is a shaped article and a method for preparing such an article, the article comprising a composition comprising (1) a polyamide having a melt viscosity from 200 Pas to 4000 Pas, measured at 250 °C and a shear rate of 12 sec"1 in an amount in the range of 35 to 70 weight % of the combination of (1) and (2); and (2) an ionomer composition in an amount in the range of 30 to 65 weight % of the combination of (1) and (2), wherein the ionomer composition comprises at least one neutralized acid copolymer, wherein the acid copolymer comprises copolymerized units of ethylene with (a) copolymerized units of an alpha-beta unsaturated monocarboxylic acid wherein the monocarboxylic acid is methacrylic acid or acrylic acid or a combination thereof; (b) optionally copolymerized units of an alpha-beta unsaturated dicarboxylic acid derivative selected from maleic anhydride and alkyl monoesters of maleic acid or fumaric acid, in the amount of 0 to 7 weight % of the copolymer; wherein the combination of (a) and (b) when present is from 7 to 21 weight % of the copolymer; (c) optionally copolymerized units of an alkyl acrylate or alkyl methacrylate comonomer, in the amount of 0 to 25 weight % of the copolymer; and wherein 50 mole % to 95 mole % of the total carboxylic acid groups in the copolymer are neutralized to salts comprising cations of zinc (Zn) and a second metal (M2) selected from Group 1 of the Periodic Table of the Elements, wherein Zn cations comprise 10 to 90 % mole equivalents and M2 cations comprise 90 to 10 % mole equivalents. The articles prepared from the compositions with mixed ion ionomers exhibit high stiffness, hardness and toughness, good scratch resistance, desirable low melt viscosity and high processability.
摘要:
본 발명은 카르본산 변성 니트릴계 공중합체 라텍스와 카르본산 변성 스티렌계 공중합체를 혼합한 카르본산 변성 니트릴계 공중합체 라텍스, 이를 포함하는 딥 성형용 라텍스 조성물, 및 이로부터 제조된 성형품에 관한 것으로서, 유리전이온도가 낮고 평균입경이 90nm 이상인 카르본산 변성 니트릴계 라텍스와 유리전이온도가 80℃ 이상이고 평균입경이 90nm 미만인 카르본산 스티렌계 라텍스를 제조 후, 혼합하여 사용함으로써 인장강도가 우수한 성형품 제조가 가능하다.
摘要:
The present invention relates a polymeric product comprising at least two layers, wherein a functional layer comprises a polymeric material and at least one anti- microbial substance, and a protective layer, comprising a polymeric material arranged outside the functional layer and completely covering said functional layer, wherein the protective layer does not comprise any anti-microbial substances. The invention further relates to a method of producing said product, the use of the same and a kit for producing the product.
摘要:
A pipe or tube article comprising an innermost comprising a grafted polyolefin composition made from a grafted polyolefin composition is disclosed which can provide long lifetime, highly abrasion-resistant pipes for mining and other transportation uses. Methods for preparing the article and transporting abrasive materials through the article are also described.
摘要:
There is provided a polyol-crosslinkable fluorine-containing elastomer composition which is excellent in chemical resistance, solvent resistance (especially resistance to an acidic solvent) and fuel resistance (especially biofuel resistance) and is crosslinkable at the same crosslinking speed as in the case of using calcium hydroxide in a usual amount even without blending calcium hydroxide (or decreasing a blending amount of calcium hydroxide). The fluorine-containing elastomer composition comprises a polyol-crosslinkable fluorine-containing elastomer, a polyol crosslinking agent and a silicate of an alkali metal.