Preparation of polycondensates of aspartic acid and use of the
polycondensates
    12.
    发明授权
    Preparation of polycondensates of aspartic acid and use of the polycondensates 失效
    制备天冬氨酸缩聚物和使用缩聚物

    公开(公告)号:US5888959A

    公开(公告)日:1999-03-30

    申请号:US776709

    申请日:1997-02-12

    CPC classification number: C02F5/12 C08G73/0611 C08G73/1092 C11D3/3719

    Abstract: Process for preparing polycondensates of aspartic acid by polycondensation of aspartic acid at from 140.degree. to 300.degree. C. in the presence of sulfuric acid which has been partially neutralized with ammonia and/or amines as catalyst, and use of the reaction mixtures obtainable in this way or of the reaction mixtures neutralized with alkali metal or alkaline earth metal bases as additive to phosphate-free or reduced phosphate detergents and cleaners.

    Abstract translation: PCT No.PCT / EP95 / 03004 Sec。 371日期1997年2月12日 102(e)1997年2月12日PCT PCT 1995年7月28日PCT公布。 出版物WO96 / 05242 日本1996年2月22日在氨水和/或胺作为催化剂部分中和的硫酸存在下,通过天冬氨酸在140〜300℃缩聚制备天冬氨酸缩聚物的方法, 以这种方式获得的反应混合物或用碱金属或碱土金属碱中和的反应混合物作为无磷酸盐或还原型磷酸盐洗涤剂和清洁剂的添加剂。

    Biodegradable polymers, the preparation thereof and the use thereof for
producing biodegradable moldings
    14.
    发明授权
    Biodegradable polymers, the preparation thereof and the use thereof for producing biodegradable moldings 失效
    生物可降解聚合物,其制备方法及其生产可生物降解成型品的用途

    公开(公告)号:US5817721A

    公开(公告)日:1998-10-06

    申请号:US836311

    申请日:1997-05-12

    CPC classification number: C08G63/91 C08G63/60

    Abstract: A biodegradable polyester obtainable by reacting a mixture comprising (a1) from 95 to 99.9% by weight of a polyester P1 obtainable by reacting a mixture essentially comprising (b1) a mixture comprising 35-95 mol % of adipic acid or ester-forming derivatives thereof, 5-65 mol % of terephthalic acid or ester-forming derivatives thereof, and 0-5 mol % of a compound containing sulfonate groups, and (b2) a dihydroxy compound selected from the group consisting of C.sub.2 -C.sub.6 -alkanediols and C.sub.5 -C.sub.10 -cycloalkanediols, with the proviso that a compound D with at least three groups capable of ester formation is employed to prepare the polyester P1, (a2) from 0.1 to 5% by weight of a divinyl ether C1 and (a3) from 0 to 5 mol %, based on component (b1) from the preparation of P1, of compound D, and other biodegradable polymers and thermoplastic molding compositions, processes for the preparation thereof, the use thereof for producing biodegradable moldings and adhesives.

    Abstract translation: PCT No.PCT / EP95 / 04335 371日期1997年5月12日 102(e)日期1997年5月12日PCT提交1995年11月4日PCT公布。 公开号WO96 / 15175 PCT 日期1996年5月23日一种可生物降解的聚酯,其可通过使包含(a1)95-99.9重量%的聚酯P1的混合物反应获得,所述聚酯P1可通过使基本上包含(b1)包含35-95mol%己二酸或酯 5-35摩尔%的对苯二甲酸或其成酯衍生物,以及0-5摩尔%的含有磺酸盐基团的化合物,和(b2)选自下组的二羟基化合物:C 2 -C 6 - 链烷二醇和C 5 -C 10环烷二醇,条件是使用具有至少三个能够形成酯的基团的化合物D来制备聚酯P1,(a2)0.1至5重量%的二乙烯基醚C1和(a3 )为0〜5摩尔%,基于化合物D的P1的制备成分(b1),其他可生物降解的聚合物和热塑性成型组合物,其制备方法,其用于生产可生物降解的成型品和粘合剂的用途。

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