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    • 86. 发明授权
    • Process for producing high molecular weight polyethylene
    • 生产高分子量聚乙烯的方法
    • US09238719B2
    • 2016-01-19
    • US12741431
    • 2008-11-06
    • Harold Jan SmeltPieter GijsmanMartin van Duin
    • Harold Jan SmeltPieter GijsmanMartin van Duin
    • C08F2/46C08L23/06C08K5/3435C08K3/28C08J3/28A61L27/16C08K5/3492
    • C08J3/24A61L27/16A61L27/505C08F8/00C08J3/28C08J2323/06C08J2323/36C08K5/3435C08K5/3492C08K5/34926C08L23/06C08L2201/08C08L2203/02C08L2207/068C08L2666/02C08F110/02
    • The invention relates to a process for producing an (ultra) high molecular weight polyethylene (HMWPE) article comprising:—incorporating into the HMWPE resin a Hindered Amine Light Stabilizer (HALS) and—cross-link the (U)HMWPE during or after molding the (U)HMWPE resin. In particular the invention relates to a process comprising the following steps: a) incorporating into (U)HMWPE resin a Hindered Amine Light Stabilizer (HALS) according to one of the following general formulas or combinations hereof: wherein R1 up to and including R5 are herein independent substituents; for example containing hydrogen, ether, ester, amine, amide, alkyl, alkenyl, alkynyl, aralkyl, cycloalkyl and/or aryl groups, which substituents may in turn contain functional groups, for example alcohols, ketones, anhydrides, imines, siloxanes, ethers, carboxyl groups, aldehydes, esters, amides, imides, amines, nitriles, ethers, urethanes and any combination thereof; b) molding the (U)HMWPE resin comprising the HALS, resulting in an article; c) cross-linking and sterilizing the article via gamma radiation or electron beam radiation; d) optionally, if step b results in a stock shape, machining the stock shape into an article; wherein step c and step d can be performed in either order.
    • 本发明涉及一种用于生产(超)高分子量聚乙烯(HMWPE)制品的方法,其包括: - 在成型期间或之后 - 将HMWPE树脂中的受阻胺光稳定剂(HALS)和 - 交联(U)HMWPE (U)HMWPE树脂。 具体而言,本发明涉及一种包括以下步骤的方法:a)根据以下通式或其组合之一将(U)HMWPE树脂掺入到受阻胺光稳定剂(HALS)中:其中R 1直至并包括R 5为 本文独立取代基; 例如含有氢,醚,酯,胺,酰胺,烷基,烯基,炔基,芳烷基,环烷基和/或芳基,该取代基又可包含官能团,例如醇,酮,酸酐,亚胺,硅氧烷,醚 羧基,醛,酯,酰胺,酰亚胺,胺,腈,醚,氨基甲酸酯及其任何组合; b)模制包含HALS的(U)HMWPE树脂,得到制品; c)通过伽马辐射或电子束辐射对制品进行交联和灭菌; d)任选地,如果步骤b导致坯料形状,将坯料加工成制品; 其中步骤c和步骤d可以以任何顺序执行。
    • 90. 发明授权
    • Method for producing expandable granulates containing polylactic acid
    • 用于生产含有聚乳酸的可膨胀颗粒的方法
    • US09212270B2
    • 2015-12-15
    • US13522031
    • 2011-01-06
    • Andreas FüβlBangaru SampathMaximilian HofmannIngo BellinSameer NalawadeKlaus HahnAndreas KünkelRobert Loos
    • Andreas FüβlBangaru SampathMaximilian HofmannIngo BellinSameer NalawadeKlaus HahnAndreas KünkelRobert Loos
    • C08J9/16C08J9/18C08L67/02C08J9/00C08L67/04C08L33/06
    • C08J9/127C08J9/0061C08J9/16C08J9/18C08J2333/14C08J2367/02C08J2367/04C08J2463/00C08J2467/02C08L33/068C08L67/02C08L67/04C08L2666/02
    • The invention relates to a process for producing expandable pelletized material which comprises polylactic acid which comprises the following steps: a) melting and incorporation by mixing of the following components: i) from 50 to 99.9% by weight, based on the total weight of components i to iii), of polylactic acid, ii) from 0 to 49.9% by weight, based on the total weight of components i to iii), of one or more further polymers, iii) from 0.1 to 2% by weight, based on the total weight of components i to iii), of a diepoxide or polyepoxide, and iv) from 0 to 10% by weight of one or more additives, b) incorporation by mixing of v) from 3 to 7% by weight, based on the total weight of components i to iv), of an organic blowing agent into the polymer melt by means of a static or dynamic mixer at a temperature of at least 140° C., c) discharging through a die plate with holes, the diameter of which at the exit from the die is at most 1.5 mm, and d) pelletizing the melt comprising blowing agent directly downstream of the die plate, and under water, at a pressure in the range from 1 to 20 bar. The invention further relates to expandable pelletized material which comprises polylactic acid and which is obtainable by said process, and also to specific expandable pelletized material which comprises polylactic acid and which has a proportion of from 3 to 7% by weight of an organic blowing agent, preferably n-pentane and particularly preferably isopentane. The invention further relates to a preferred process for producing expandable pelletized material which comprises blowing agent and which comprises polylactic acid, and which has low bulk density.
    • 本发明涉及一种生产可膨胀颗粒材料的方法,其包括聚乳酸,其包括以下步骤:a)通过混合以下组分熔融和掺入:i)基于组分的总重量为50至99.9重量% ii)0至49.9重量%,基于组分i至iii的总重量),一种或多种其它聚合物,iii)基于以下物质的0.1至2重量%,基于 组分i至iii),二环氧化物或聚环氧化物的总重量,和iv)0至10重量%的一种或多种添加剂,b)通过混合v)3至7重量%,基于 通过静态或动态混合器在至少140℃的温度下将有机发泡剂的总成分重量分配到聚合物熔体中,c)通过具有孔的模板排出,直径 其中在模具的出口处至多为1.5mm,以及d)将熔体造粒, 直接在模板的下游,并在水下,在1至20巴的压力范围内。 本发明还涉及包含聚乳酸并且可通过所述方法获得的可膨胀颗粒材料,还涉及包含聚乳酸并且具有3-7重量%的有机发泡剂的比例的特定的可膨胀颗粒状材料, 优选正戊烷,特别优选异戊烷。 本发明还涉及一种用于生产可膨胀颗粒材料的优选方法,其包括发泡剂,其包含聚乳酸,并且其堆积密度低。