Stabilized recycled plastics
    5.
    发明授权
    Stabilized recycled plastics 失效
    稳定的再生塑料

    公开(公告)号:US5789470A

    公开(公告)日:1998-08-04

    申请号:US809477

    申请日:1997-03-20

    CPC分类号: C08K5/34926

    摘要: The invention relates to stabilized recycled plastics, which can be obtained from domestic, commercial and industrial waste or valuable material collections, comprising a macrocyclic compounds containing a radical of formula (I) or (II), in the macrocycle or in a side group of the macrocycle, where the macrocycle comprises at least 8 atoms and in which the substituents R, independently of one another, are methyl, ethyl or propyl, or two radicals R on the same carbon atom are, together, a pentamethylene radical, and a is the number 0, 1 or 2. The invention also relates to a process for the stabilization of recycled plastics and to the use of the above macrocyclic compounds as stabilizer. ##STR1##

    摘要翻译: PCT No.PCT / EP95 / 03628 371日期1997年3月20日 102(e)1997年3月20日PCT PCT 1995年9月15日PCT公布。 公开号WO96 / 09341 日期:1996年3月28日本发明涉及可从国内,商业和工业废物或有价值的材料收集中获得的稳定的再生塑料,其包含在大环中含有式(I)或(II)基团的大环化合物或 在大环的侧基,其中大环包含至少8个原子,其中取代基R彼此独立地为甲基,乙基或丙基,或同一碳原子上的两个基团R一起是五亚甲基 自由基,a是数字0,1或2.本发明还涉及使再生塑料稳定化的方法以及使用上述大环化合物作为稳定剂。 (I)(II)

    Decomposing polymers using NOR-HALS compounds
    6.
    发明授权
    Decomposing polymers using NOR-HALS compounds 有权
    使用NOR-HALS化合物分解聚合物

    公开(公告)号:US6133414A

    公开(公告)日:2000-10-17

    申请号:US202357

    申请日:1998-12-14

    摘要: A method is described for the decomposition of polymers, especially waste plastics and used plastics, in which so-called NOR--HALS compounds--that is, for example, compounds comprising the group ##STR1## in which R* is C.sub.1 -C.sub.20 alkyl, OH-substituted C.sub.1 -C.sub.20 alkyl, optionally C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.12 cycloalkyl or O- or S-interrupted C.sub.2 -C.sub.20 alkyl--are added and heating is carried out at temperatures which lie above the customary processing temperatures for polymers (280.degree. C. or more).

    摘要翻译: PCT No.PCT / EP97 / 03133 Sec。 371 1998年12月14日第 102(e)1998年12月14日PCT PCT 1997年6月17日PCT公布。 出版物WO97 / 49737 日期1997年12月31日描述了用于分解聚合物,特别是废塑料和废塑料的方法,其中所谓的NOR-HALS化合物 - 例如包括其中R *是C 1 -C 20烷基的基团的化合物 ,OH取代的C 1 -C 20烷基,任选地C 1 -C 4烷基取代的C 5 -C 12环烷基或O-或S-间断的C 2 -C 20烷基 - 并且在高于常规加工温度的聚合物的温度下进行加热(280℃ 。 或者更多)。

    Process for increasing the molecular weight of polycondensates
    9.
    发明授权
    Process for increasing the molecular weight of polycondensates 失效
    提高缩聚物分子量的方法

    公开(公告)号:US06706824B1

    公开(公告)日:2004-03-16

    申请号:US09703782

    申请日:2000-11-01

    IPC分类号: C08G6391

    摘要: By heating at above the melting point and/or glass transition point of the polycondensate and adding an aromatic dicyanate; or adding a mixture comprising an aromatic dicyanate and a polyfunctional compound selected from the class of sterically hindered hydroxyphenyl-alkyl-phosphonic esters and monoesters, diphosphonites and secondary aromatic amines; or adding a mixture comprising (i) an aromatic dicyanate, (ii) at least one polyfunctional compound selected from the class of sterically hindered hydroxyphenyl-alkyl-phosphonic esters and monoesters, diphosphonites and secondary amines, and (iii) a difunctional epoxide, it is possible to bring about an increase in the molecular weight and/or viscosity of virgin polycondensate and polycondensate recyclates.

    摘要翻译: 通过在缩聚物的熔点和/或玻璃化转变点以上加热并加入芳香族二氰酸酯; 或添加包含芳族二氰酸酯和选自空间位阻羟基苯基 - 烷基 - 膦酸酯和单酯,二膦酸酯和仲芳族胺类的多官能化合物的混合物; 或添加包含(i)芳族二氰酸酯,(ii)至少一种选自空间位阻羟基苯基 - 烷基 - 膦酸酯和单酯,二亚膦酸酯和仲胺的多官能化合物和(iii)双官能环氧化物的混合物的混合物, 可能导致原始缩聚物和缩聚物回收物的分子量和/或粘度增加。