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517 条记录 (耗时 0.018 秒)

    Resistance of polyvinyl chloride resins to discoloration during drying with N,N'-diphenyl urea
    61.
    发明授权
    Resistance of polyvinyl chloride resins to discoloration during drying with N,N'-diphenyl urea 失效
    聚氯乙烯树脂在用N，N'-二苯基脲干燥过程中变色的抗性

    公开(公告)号：US4252705A

    公开(公告)日：1981-02-24

    申请号：US973488

    申请日：1978-12-26

    申请人： Lawrence R. Brecker

    发明人： Lawrence R. Brecker

    IPC分类号： C08L27/00 ,  C08F6/00 ,  C08F6/06 ,  C08K5/21 ,  C08L1/00 ,  C08L27/06

    CPC分类号： C08K5/21

    摘要： The resistance of polyvinyl chloride resins to the development of yellow to orange reversible discoloration when heated in the presence of water at moderately elevated temperatures above 80.degree. C. up to about 160.degree. C. is improved by combining therewith an N,N'-diphenyl urea. Such reversible discoloration is not associated with any heat instability, and the resistance of the polyvinyl chloride resin to deterioration when heated at processing temperatures of 150.degree. C. and above is then improved by incorporation of the usual polyvinyl chloride resin heat stabilizers.

    摘要翻译： 当在高于80℃至约160℃的中等升高的温度下在水存在下加热时，聚氯乙烯树脂对黄色至橙色的可逆变色的耐受性通过与N，N'-二苯基 尿素。 这种可逆变色与任何热不稳定性不相关，然后通过加入通常的聚氯乙烯树脂热稳定剂来改善聚氯乙烯树脂在150℃及以上的加工温度下加热时的劣化的阻力。

    Polymers stabilized against degradation by ultraviolet radiation
    62.
    发明授权
    Polymers stabilized against degradation by ultraviolet radiation 失效
    聚合物通过紫外线辐射稳定防止降解

    公开(公告)号：US4240954A

    公开(公告)日：1980-12-23

    申请号：US15552

    申请日：1979-02-26

    申请人： Joseph A. Stretanski

    发明人： Joseph A. Stretanski

    IPC分类号： C08K5/21 ,  C08K5/405 ,  C08K5/16

    CPC分类号： C08K5/405 ,  C08K5/21

    摘要： Polymers are stabilized against ultraviolet degradation by the use of urea or thiourea derivatives of the formula: ##STR1## Also disclosed is the use of the above compound with specific hydroxybenzoates or titanium dioxide.

    摘要翻译： 聚合物通过使用下式的脲或硫脲衍生物稳定，防止紫外线降解：还公开了上述化合物与特定羟基苯甲酸酯或二氧化钛的用途。

    Urea containing sizing compositions
    65.
    发明授权
    Urea containing sizing compositions 失效
    含有上浆组合物的尿素

    公开(公告)号：US4025354A

    公开(公告)日：1977-05-24

    申请号：US545537

    申请日：1975-01-30

    申请人： Ralph Waldo Emerson ,  John R. Shattuck

    发明人： Ralph Waldo Emerson ,  John R. Shattuck

    IPC分类号： C08K5/21 ,  D21H17/07 ,  D21H17/09 ,  D21H17/60 ,  D21H17/62 ,  C08L93/04

    CPC分类号： D21H17/62 ,  C08K5/21 ,  D21H17/07 ,  D21H17/09 ,  D21H17/60

    摘要： This invention is directed to novel sizing agent compositions containing urea which is chemically modified and/or combined with other materials which produce desirable sizing properties. These novel agents are used as beater additives in pulp refining for the manufacture of cellulosic products or are applied to finished cellulosic products as surface sizes. The invention is also directed to methods of making the sizing agents. In one preferred embodiment, urea is reacted with sulfamic acid and the resulting reaction product is combined with rosin and further reacted to produce a novel sizing agent.

    摘要翻译： 本发明涉及含有尿素的新型施胶剂组合物，其中所述的尿素经过化学改性和/或与其它可产生期望的施胶性质的材料组合。 这些新型试剂用作纸浆精炼中的搅拌添加剂，用于制造纤维素产品，或者作为表面尺寸应用于成品纤维素产品。 本发明还涉及制备上浆剂的方法。 在一个优选的实施方案中，尿素与氨基磺酸反应，并将所得反应产物与松香混合并进一步反应以产生新的上浆剂。

    Process for the manufacture of polycondensation products containing phosphorus, the products and their use as flameproofing agents
    69.
    发明授权
    Process for the manufacture of polycondensation products containing phosphorus, the products and their use as flameproofing agents 失效
    用于制造含磷的缩聚产物的方法，该产品及其用作防火剂

    公开(公告)号：US3907898A

    公开(公告)日：1975-09-23

    申请号：US39957673

    申请日：1973-09-21

    申请人： CIBA GEIGY AG

    发明人： NACHBUR HERMANN ,  KERN JOERG ,  MAEDER ARTHUR

    IPC分类号： B27K3/15 ,  B27K3/50 ,  C08G61/12 ,  C08G79/06 ,  D06M13/285 ,  D06M15/431 ,  D06M15/667 ,  D06M15/673 ,  C11D3/26 ,  C07F9/28

    CPC分类号： D06M15/673 ,  B27K3/15 ,  B27K2240/30 ,  C08G79/06 ,  C08K5/21 ,  C08K5/49 ,  D06M13/285 ,  D06M15/431 ,  D06M15/667 ,  Y10T442/2672

    摘要： The subject of the invention is a process for the manufacture of polycondensation products from hydroxymethylphosphonium compounds, characterised in that at least one anhydrous tetrakis(hydroxymethyl)-phosphonium salt or tetrakis(hydroxymethyl)phosphonium hydroxide is condensed with itself in an anhydrous medium, optionally using an acid catalyst and optionally in the presence of at least one inert organic solvent, at 100* to 150*C, preferably 120* to 150*C, the condensation being continued until 0.5 to 1.5 mols of water have been eliminated per 1 mol of phosphonium compound employed, free hydroxyl groups are, if appropriate, at least partially etherified with at least one alkanol with 1 to 4 carbon atoms, and that the salt of the polycondensation products are, where relevant, converted into the corresponding hydroxides. The polycondensation products are used for the flameproofing of organic fibre material, especially textiles. Appropriately, the procedure followed is that an aqueous preparation is applied to these materials which contains at least (1) a polycondensation product of the indicated type and (2) a polyfunctional compound, and that the material thus treated are dried and subjected to a heat treatment.

    摘要翻译： 本发明的主题是由羟甲基鏻化合物制造缩聚产物的方法，其特征在于至少一种无水四（羟甲基）鏻盐或四（羟甲基） - 鏻氢氧化物与自身在无水介质中冷凝， 任选地使用酸催化剂和任选地在至少一种惰性有机溶剂的存在下，在100-150℃，优选120-150℃下，继续进行缩合，直至每1次消除0.5至1.5摩尔的水 使用的鏻化合物的摩尔数，如果合适，游离羟基与至少一种具有1至4个碳原子的链烷醇至少部分醚化，并且缩聚产物的盐在相关时转化为相应的氢氧化物。