Self-crimped foamed fibers
    3.
    发明授权
    Self-crimped foamed fibers 失效
    自卷发泡纤维

    公开(公告)号:US4626390A

    公开(公告)日:1986-12-02

    申请号:US688494

    申请日:1985-01-03

    摘要: Crimped foamed fibers are produced by a process which eliminates any mechanical deformation steps. The process comprises the step of forming foamed fibers having a plurality of randomly arranged cells distributed asymetrically over a given cross section and occupying at least about 10% of the cross sectional area of the fiber, and heating the foamed fibers while maintaining the fibers under no load condition to produce a crimped foamed fiber. The crimped foamed fibers are used in apparel, carpet fibers, thermal insulation, acoustic and filtration.

    摘要翻译: 卷曲的发泡纤维通过消除任何机械变形步骤的方法产生。 该方法包括形成具有多个随机布置的细胞的发泡纤维的步骤,该多个随机布置的细胞在给定的横截面上以非对称方式分布并占据纤维横截面面积的至少约10%,并且在保持纤维不被保持的同时加热发泡纤维 负载条件以产生卷曲的发泡纤维。 卷曲发泡纤维用于服装,地毯纤维,隔热,声学和过滤。

    Fibers and filters containing said fibers
    5.
    发明授权
    Fibers and filters containing said fibers 失效
    含有纤维的纤维和过滤器

    公开(公告)号:US4908052A

    公开(公告)日:1990-03-13

    申请号:US300194

    申请日:1989-01-23

    IPC分类号: D01F6/92 D01F8/14

    摘要: This invention relates to a fiber comprising a major amount of a continous phase comprising one or more melt processible polyesters of fiber forming molecular weight, and a minor amount of one or more polyolefins non-uniformly dispersed in said continuous phase such that the concentration of polyolefins at or near the surface of said fiber is greater than the concentration of polyesters at or near the surface of said fiber, and a process for preparing said fiber.

    摘要翻译: 本发明涉及一种纤维,其包含主要量的连续相,其包含一种或多种可形成分子量的可熔融加工的聚酯,以及少量一种或多种不均匀分散在所述连续相中的聚烯烃,使得聚烯烃 在所述纤维的表面处或附近大于在所述纤维的表面处或附近的聚酯的浓度,以及制备所述纤维的方法。

    Process for preparing .alpha.-chloro-.epsilon.-caprolactam
    7.
    发明授权
    Process for preparing .alpha.-chloro-.epsilon.-caprolactam 失效
    制备{60-氯 - {68-己内酰胺

    公开(公告)号:US4044001A

    公开(公告)日:1977-08-23

    申请号:US720013

    申请日:1976-09-02

    IPC分类号: C07D223/10

    CPC分类号: C07D223/10

    摘要: A process is described for preparing .alpha.-chloro-.epsilon.-caprolactam, an intermediate for the synthesis of L-lysine, comprising reacting an N-substituted -.alpha.-chloro-.epsilon.-caprolactam, wherein the N-substituent is an organic radical selected from the group consisting of arylsulfonyl, aroyl and alkanoyl radicals, with .epsilon.-caprolactam at a temperature within the range of about 50.degree. to about 250.degree. C to form .alpha.-chloro-.epsilon.-caprolactam and an N-substituted-.epsilon.-caprolactam. A continuous process is also described for the production of .alpha.-chloro-.epsilon.-caprolactam further comprising the chlorination of N-substituted-.epsilon.-caprolactam to produce N-substituted-.alpha.-chloro-.epsilon.-caprolactam.

    摘要翻译: 描述了制备用于合成L-赖氨酸的中间体α-氯 - ε-己内酰胺的方法,包括使N-取代-α-氯 - ε-己内酰胺反应,其中N-取代基是选自 由芳基磺酰基,芳酰基和烷酰基组成的基团,其中ε-己内酰胺在约50℃至约250℃的温度范围内以形成α-氯 - ε-己内酰胺和N-取代的ε-己内酰胺。 还描述了用于生产α-氯 - ε-己内酰胺的连续方法,其进一步包括N-取代的ε-己内酰胺的氯化以产生N-取代-α-氯 - ε-己内酰胺。

    Fibers and filters containing said fibers
    8.
    发明授权
    Fibers and filters containing said fibers 失效
    含有纤维的纤维和过滤器

    公开(公告)号:US5069970A

    公开(公告)日:1991-12-03

    申请号:US451704

    申请日:1989-12-18

    IPC分类号: D01F6/92 D01F8/14

    摘要: This invention relates to a fiber comprising a major amount of a continuous phase comprising one or more melt processible polyesters of fiber forming molecular weight, and a minor amount of one or more polyolefins non-uniformly dispersed in said continuous phase such that the concentration of polyolefins at or near the surface of said fiber is greater than the concentration of polyesters at or near the surface of said fiber, and a process for preparing said fiber.

    摘要翻译: 本发明涉及一种纤维,其包含主要量的连续相,其包含形成分子量的一种或多种可熔融加工的聚酯,和少量一种或多种不均匀分散在所述连续相中的聚烯烃,使得聚烯烃 在所述纤维的表面处或附近大于在所述纤维的表面处或附近的聚酯的浓度,以及制备所述纤维的方法。

    Injection moldable poly(ethylene terephthalate)
    9.
    发明授权
    Injection moldable poly(ethylene terephthalate) 失效
    注塑成型聚对苯二甲酸乙二醇酯

    公开(公告)号:US4403052A

    公开(公告)日:1983-09-06

    申请号:US412473

    申请日:1982-08-30

    CPC分类号: C08K3/16 C08K3/04

    摘要: A flame retarded, injection moldable, saturated, linear polyester composition contains red phosphorus as flame retardant and a metal iodide as phosphine suppressing agent. The metal is one of the groups 1a and 2b of the periodic table of elements with potassium iodide being the most preferred.The phosphine evolution of a poly(ethylene terephthalate) molding composition containing 4% red phosphorus as flame retardant is reduced to 0.3 ppm at the die and to 1.0 ppm in storage by the addition of 0.6% of potassium iodide.

    摘要翻译: 阻燃注射成型的饱和直链聚酯组合物含有作为阻燃剂的红磷和作为磷化氢抑制剂的金属碘化物。 金属是元素周期表的组1a和2b之一,其中碘化钾是最优选的。 含有4%红磷作为阻燃剂的聚(对苯二甲酸乙二醇酯)模塑组合物的磷化氢演变通过加入0.6%碘化钾在模具处降低至0.3ppm,并在储存时减少至1.0ppm。

    Extraction of uranium from phosphoric acid using supported extractants
    10.
    发明授权
    Extraction of uranium from phosphoric acid using supported extractants 失效
    使用支持的萃取剂从磷酸提取铀

    公开(公告)号:US4402917A

    公开(公告)日:1983-09-06

    申请号:US184589

    申请日:1980-09-05

    IPC分类号: C22B60/02 C01G43/00

    CPC分类号: C22B60/0265 C22B60/0243

    摘要: Uranium is extracted from phosphoric acid with organophosphorus extractants supported or impregnated on polymeric resins, and especially macroreticular resins. Suitable extractants include mono and dialkylphenyl esters of phosphoric acid. Uranium may be stripped from the supported or impregnated resins with hotter or more concentrated phosphoric acid, optionally with oxidation to hexavalent form, or with aqueous fluoride solutions.

    摘要翻译: 用有机磷萃取剂从磷酸提取铀,其中有机磷萃取剂负载或浸渍在聚合物树脂上,特别是大网络树脂。 合适的萃取剂包括磷酸的单和二烷基苯基酯。 铀可以用较热或更浓缩的磷酸,任选氧化成六价形式或用氟化物水溶液从负载或浸渍的树脂中剥离。