Decomposing polymers using NOR-HALS compounds
    1.
    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)。

    Polyolefin compositions stabilized against degradation using
hydroxylamine derivatives
    8.
    发明授权
    Polyolefin compositions stabilized against degradation using hydroxylamine derivatives 失效
    使用羟胺衍生物稳定防止降解的聚烯烃组合物

    公开(公告)号:US4668721A

    公开(公告)日:1987-05-26

    申请号:US825722

    申请日:1986-02-03

    摘要: N,N-Dibenzylhydroxylamine and other selected hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.

    摘要翻译: N,N-二苄基羟胺和其它选择的羟胺衍生物在稳定聚烯烃组合物中是有效的,所述聚烯烃组合物含有稳定剂或稳定剂混合物,其选自酚类抗氧化剂,受阻胺光稳定剂,紫外光吸收剂,有机磷化合物, 脂肪酸和硫代增效剂的碱金属盐,耐高温挤压降解,暴露于天然气燃烧产物,γ辐射或长时间储存​​。

    S-Triazine hexacarboxylic acids and trianhydrides
    10.
    发明授权
    S-Triazine hexacarboxylic acids and trianhydrides 失效
    S-三嗪六羧酸和三酐

    公开(公告)号:US3943133A

    公开(公告)日:1976-03-09

    申请号:US549632

    申请日:1975-02-13

    申请人: Raymond Seltzer

    发明人: Raymond Seltzer

    CPC分类号: C07D251/24 C08K5/3492

    摘要: s-Triazine hexacarboxylic acids having the formula ##SPC1##Can be prepared by reacting cyanuric chloride with a diakyl substituted aromatic compound and thereafter oxidizing the intermediate to yield the above acid. By dehydrating the acid a corresponding trianhydride is obtained. Such compounds are useful as crosslinking agents for resin systems.

    摘要翻译: 具有下式的s-三嗪六羧酸可以通过用二异氰酸酯取代的芳族化合物反应氰基氯化物制备,并且将中间体氧化成上述酸。 通过使酸脱水,得到相应的三酐。 这些化合物可用作树脂体系的交联剂。