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62 条记录 (耗时 0.037 秒)

    Process for stabilizing polyarylates with an aromatic phenol
    52.
    发明授权
    Process for stabilizing polyarylates with an aromatic phenol 失效
    用芳族苯酚稳定多芳基化合物的方法

    公开(公告)号：US4281099A

    公开(公告)日：1981-07-28

    申请号：US089270

    申请日：1979-10-29

    申请人： Louis M. Maresca

    发明人： Louis M. Maresca

    IPC分类号： C08G63/00 ,  C08G63/19 ,  C08G63/20 ,  C08G63/83 ,  C08L67/02

    CPC分类号： C08G63/20 ,  C08G63/19 ,  C08G63/83

    摘要： Described herein is a process for preparing melt stable polyarylates having a reduced viscosity of from about 0.4 to greater than 1.0 dl/g which comprises reacting a diester derivative of a dihydric phenol with an aromatic dicarboxylic acid to produce a polyarylate having a reduced viscosity of from about 0.5 to greater than 1.0 dl/g, and then adding a stabilizing amount of an aromatic phenol to the polyarylate to form a polyarylate substantially free of anhydride linkages.

    摘要翻译： 本文描述了一种制备具有约0.4至大于1.0dl / g的比浓粘度的熔融稳定的多芳基化合物的方法，其包括使二元酚的二酯衍生物与芳族二羧酸反应，以制备具有降低粘度的多芳基化合物 约0.5至大于1.0dl / g，然后将稳定量的芳族苯酚加入到多芳基化合物中以形成基本上不含酸酐键的多芳基化合物。

    Plasticized polyphenylene ether compositions
    54.
    发明授权
    Plasticized polyphenylene ether compositions 失效
    塑化聚苯醚组合物

    公开(公告)号：US5106899A

    公开(公告)日：1992-04-21

    申请号：US629920

    申请日：1990-12-19

    申请人： Louis M. Maresca

    发明人： Louis M. Maresca

    IPC分类号： C08K5/07 ,  C08K5/00 ,  C08K5/01 ,  C08K5/05 ,  C08K5/36 ,  C08K5/41 ,  C08L25/06 ,  C08L61/06 ,  C08L71/00 ,  C08L71/12

    CPC分类号： C08K5/0016 ,  C08K5/01 ,  C08L71/123 ,  C08L61/06

    摘要： Polymer compositions comprise a polyphenylene ether resin and a plasticizer of the formula ##STR1## wherein X is selected from the group consisting CH.sub.2, O and S; Y is different from X and is selected from the group consisting of CH.sub.2, O, CO, S, SO and SO.sub.2 ; Ar is an aromatic ring; Z.sup.1 and Z.sup.2 are individually selected from the group consisting of alkyl, alkoxide, aryl, aryl oxide, nitrile and nitro groups; R is hydrogen or an alkyl group; m is from 0 to 3; n is from 1 to about 10; and a and b are individually from 0 to 4; provided that both X and Y are not simultaneously oxygen. The compositions may further include a polystyrene resin, for example, a rubber-modified polystryene resin.

    Copolyesters
    55.
    发明授权
    Copolyesters 失效
    共聚酯

    公开(公告)号：US5039717A

    公开(公告)日：1991-08-13

    申请号：US304042

    申请日：1989-01-30

    申请人： James H. Kawakami ,  Lloyd M. Robeson ,  Bernard Cooker ,  Lee P. McMaster ,  Louis M. Maresca

    发明人： James H. Kawakami ,  Lloyd M. Robeson ,  Bernard Cooker ,  Lee P. McMaster ,  Louis M. Maresca

    IPC分类号： C08G63/60

    CPC分类号： C08G63/60

    摘要： Injection-moldable copolyesters of terephthalate units, ethylene units and a high proportion (e.g. 82-87) mole %) of oxybenzoate units, and cookware made of such copolyesters. Process for making such copolyesters by reacting polyethylene terephthalate with p-acetoxybenzoic acid in a solvent, first at a temperature below 240.degree. C. to product a fragmented polyester, raising the temperature to split off acetic acid, then adding more acetoxybenzoic acid to raise the oxybenzoate content to more than 80 mole %.

    摘要翻译： 对苯二甲酸酯单元的注射成型共聚酯，乙烯单元和高比例（例如82-87）摩尔％）的羟基苯甲酸酯单元，以及由这种共聚酯制成的炊具。 通过使聚对苯二甲酸乙二醇酯与对乙酰氧基苯甲酸在溶剂中反应制备这种共聚酯的方法，首先在低于240℃的温度下制备碎片聚酯，提高温度以分离乙酸，然后加入更多的乙酰氧基苯甲酸， 羟基苯甲酸酯含量超过80％（摩尔）。

    Synthesis of bis(N-substituted phthalimide)ethers
    56.
    发明授权
    Synthesis of bis(N-substituted phthalimide)ethers 失效
    双（N-取代邻苯二甲酰亚胺）醚的合成

    公开(公告)号：US4757149A

    公开(公告)日：1988-07-12

    申请号：US948045

    申请日：1986-12-31

    申请人： Louis M. Maresca

    发明人： Louis M. Maresca

    IPC分类号： C07D209/48

    CPC分类号： C07D209/48

    摘要： Bis(N-substituted phthalimide)ethers are synthesized in a one-step process by heating a compound of the formula (I): ##STR1## with a catalytic amount of an alkali or alkaline earth metal carbonate in a polar aprotic solvent under ether-forming conditions, and recovering the bis(N-substituted phthalimide)ether from the reaction mixture. R.sub.1 is hydrogen; a monovalent organic radical selected from a lower alkyl group having from 1 to about 10 carbon atoms, preferably from 1 to about 5 carbon atoms; or an aromatic hydrocarbon radical, or halogenated derivative thereof, having from about 6 to about 20 carbon atoms. X is a leaving group.

    Polycarbonates having improved hydrolytic stability
    59.
    发明授权
    Polycarbonates having improved hydrolytic stability 失效
    聚碳酸酯具有改善的水解稳定性

    公开(公告)号：US4594404A

    公开(公告)日：1986-06-10

    申请号：US591539

    申请日：1984-03-20

    申请人： James H. Kawakami ,  James E. Harris ,  Louis M. Maresca ,  Lloyd M. Robeson ,  Robert J. Cotter

    发明人： James H. Kawakami ,  James E. Harris ,  Louis M. Maresca ,  Lloyd M. Robeson ,  Robert J. Cotter

    IPC分类号： C08G64/08 ,  C08G63/62

    CPC分类号： C08G64/081

    摘要： This invention relates to moldable polycarbonate compositions and in particular to moldable polycarbonates which have ordered alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl)sulfone (TMBS) and 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A) dihaloformate, or ordered, alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl) sulfone (TMBS) dihaloformate and a bisphenol compound such as 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A). Such polycarbonates exhibit improved hydrolytic stability and also excellent processability in molding applications.

    摘要翻译： 本发明涉及可模制的聚碳酸酯组合物，特别涉及可衍生的聚碳酸酯，其具有衍生自双 - （3,5-二甲基-4-羟基苯基）砜（TMBS）和2,2-双 - （4-羟基苯基） 丙二醇（双酚A）二卤代甲酸酯，或有序的衍生自二 - （3,5-二甲基-4-羟基苯基）砜（TMBS）二卤代甲酸酯和双酚化合物如2,2-双 - （4-羟基苯基） 丙烷（双酚A）。 这种聚碳酸酯表现出改善的水解稳定性和在成型应用中的优异加工性能。