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公开(公告)号：US5266633A
公开(公告)日：1993-11-30
申请号：US716855
申请日：1991-06-17
摘要： The invention relates to a mixture composed essentially of polyoxymethylene (component A), a rubber-elastic graft copolymer in which the particles have been formed from a rubber-elastic, single-phase core based on polydiene and a hard graft shell (component B) and, if appropriate, a polymeric third component (component C). The invention also relates to a three-component mixture of the components A, B' and C, the core, in the case of B', being preponderantly or entirely composed of poly(meth)acrylic acid ester or silicone rubber instead of polydiene.The shaped articles produced from these mixtures are particularly distinguished by good low-temperature impact strength.
摘要翻译： 本发明涉及一种基本上由聚甲醛（A组分）组成的混合物，其中由橡胶弹性的基于聚二烯的橡胶弹性单相芯和硬接枝壳（组分B）形成的橡胶弹性接枝共聚物， 并且如果合适，则为聚合物第三组分（组分C）。 本发明还涉及组分A，B'和C的三组分混合物，在B'的情况下，芯主要或完全由聚（甲基）丙烯酸酯或硅橡胶代替聚二烯而组成。 由这些混合物制成的成型制品特别是具有良好的低温冲击强度。
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12.发明授权Aromatic copolyether amide which can be processed as a thermoplastic, process for its preparation, and its use for the production of molding 失效可以加工成热塑性的芳族共聚酰胺酰胺，其制备方法及其用于生产成型的方法
公开(公告)号：US4966955A
公开(公告)日：1990-10-30
申请号：US357527
申请日：1989-05-26
摘要： The structure of the aromatic copolyether amide which can be processed as a thermoplastic comprises recurring units of the formulae --CO--Ar.sup.1 --CO-- (A), --NH--Ar.sup.1 --O--Ar.sup.1 --X--Ar.sup.1 --O--Ar.sup.1 --NH (B) and --NH--Ar.sup.2 --NH-- (C) in which Ar.sup.1 denotes a divalent, unsubstituted or substituted aromatic radical having 6 carbon atoms which is linked in the p-position, X represents a 2,2-propylidene link and Ar.sup.2 is identical with Ar.sup.1 or is Ar.sup.1 which is linked in the m-position, or is the --Ar.sup.1 --Z--Ar.sup.1 -- group in which Z is a direct bond or is a radical --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --SO.sub.2 --, --CO--, --O--, --CH.dbd.CH--, --CO--NH-- or --O--Ar.sup.1 --O-- or the radical ##STR1## in which R represents hydrogen or a branched or unbranched alkyl radical having 1-4 carbon atoms. The proportion of units (A) and of the sum of units (B) and (C) is each 100 mol-%, the proportion of units (C) being up to 50 mol-% and, if Z represents --SO.sub.2 --, up to 75 mol-%. The Staudinger index [.eta.] of the copolyether amide is in the range from 50 to 1000 cm.sup.3 /g, and the value of the glass transition temperature is above 200.degree. C. The copolyether amide is prepared by a low-temperature solution, solid, interface or melt condensation process. The moldings produced therefrom in the form of filaments, wires, films and other moldings are obtained by processing the pulverulent copolyether amides or their solutions.
摘要翻译： 可以加工成热塑性的芳族共聚醚酰胺的结构包括式-CO-Ar1-CO-（A），-NH-Ar1-O-Ar1-X-Ar1-O-Ar1-NH的重复单元 B）和-NH-Ar 2 -NH-（C），其中Ar 1表示在p位上连接的具有6个碳原子的二价，未取代或取代的芳族基团，X表示2,2-亚丙基连接，Ar 2表示 与Ar1相同或为在m位连接的Ar1，或其中Z为直接键的-Ar1-Z-Ar1-基团或基团为-CH2-，-C（CH3）2-， - SO 2 - ， - CO - ， - O - ， - CH = CH-，-CO-NH-或-O-Ar 1 -O-或其中R表示氢的基团，或者具有1 -4个碳原子。 单位（A）和单位（B）和（C）之和的比例为100摩尔％，单位（C）的比例高达50摩尔％，如果Z表示-SO 2 - 高达75mol％。 共聚醚酰胺的Staudinger指数η在50至1000cm 3 / g的范围内，玻璃化转变温度的值在200℃以上。共聚醚酰胺通过低温溶液，固体， 界面或熔融缩合过程。 通过处理粉状共聚醚酰胺或其溶液获得以丝，线，膜和其它模制品形式制备的模制品。
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公开(公告)号：US4493751A
公开(公告)日：1985-01-15
申请号：US416154
申请日：1982-09-09
CPC分类号： C08G2/22 , D01D5/11 , D01F6/66 , D21H5/20 , Y10T428/2978 , Y10T428/298
摘要： The invention relates to polyoxymethylene fibrids with a reduced specific viscosity of 0.4 to 2.0 dl/g, a specific surface area of 50 to 200 m.sup.2 /g and a freeness of 30.degree. to 80.degree. SR. The fibrids are produced by flash-evaporation of a superheated solution of the polymer, a mixture of 50-95% by weight of a lower alcohol with 1-4 C atoms and 5-50% by weight of water being used as the solvent and are suitable for the production of paper.
摘要翻译： 本发明涉及具有降低的比粘度为0.4至2.0dl / g，比表面积为50至200m2 / g，游离度为30至80°SR的聚甲醛纤维素。 纤维素通过快速蒸发聚合物的过热溶液而产生，使用50-95重量％的低级醇与1-4C原子的混合物和5-50重量％的水作为溶剂，以及 适合生产纸张。
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