Process for producing filaments from melamine/formaldehyde condensation
products
    2.
    发明授权
    Process for producing filaments from melamine/formaldehyde condensation products 失效
    从三聚氰胺/甲醛缩合产物生产长丝的方法

    公开(公告)号:US5916999A

    公开(公告)日:1999-06-29

    申请号:US930172

    申请日:1997-10-09

    CPC classification number: C08G12/32

    Abstract: A process for producing continuous filament fibers from a hydroxy- or amino-alkyl-melamine modified melamine-formaldehyde condensation product comprises filtering the highly concentrated aqueous solution of the melamine-formaldehyde condensation product, forcing the filtrate through a spinneret, drying the extruded filaments in a drying shaft by means of hot air, and treating the dried filaments in a tempering oven at temperatures which rise gradually to a maximum temperature of from 160 to 250.degree. C. to cure the precondensate.

    Abstract translation: PCT No.PCT / EP96 / 01677 Sec。 371日期1997年10月9日第 102(e)日期1997年10月9日PCT 1996年4月22日提交PCT从羟基或氨基烷基 - 三聚氰胺改性的三聚氰胺 - 甲醛缩合产物生产连续长丝纤维的方法包括过滤高浓度的三聚氰胺 - 甲醛缩合产物,迫使滤液通过喷丝头,通过热空气干燥干燥轴中的挤出长丝,并在回火炉中处理干燥的长丝,温度逐渐升高至最高温度为160至250℃ 治愈预处理。

    Manufacture of aqueous suspensions of polyolefin fibrids
    6.
    发明授权
    Manufacture of aqueous suspensions of polyolefin fibrids 失效
    聚烯烃纤维素水悬浮液的制造

    公开(公告)号:US3960794A

    公开(公告)日:1976-06-01

    申请号:US502665

    申请日:1974-09-03

    CPC classification number: D21H5/1254 D21H13/14 D21H17/51 Y10T428/31862

    Abstract: A process for the manufacture of nonfoaming aqueous suspensions of polyolefin fibrids using suitable dispersing agents. These are obtained by polycondensation of 1 mole of melamine, from 1.8 to 3 moles of formaldehyde and from 0.1 to 0.5 molar portions of amino carboxylic acids or alkali metal salts thereof. Very small quantities of said dispersing agents are sufficient to finely disperse the hydrophobic polyolefin fibrids in water and to prevent the formation of foam in the manufacture of web structures of a paper-like and textile-like nature. The aqueous suspensions of polyolefin fibrids may also contain cellulose fibers.

    Abstract translation: 使用合适的分散剂制造聚烯烃纤条体的非发泡水悬浮液的方法。 这些是通过1摩尔三聚氰胺,1.8至3摩尔甲醛和0.1至0.5摩尔份的氨基羧酸或其碱金属盐的缩聚获得的。 非常少量的所述分散剂足以将疏水性聚烯烃纤条体精细分散在水中,并且防止在制造纸状和纺织品性质的纤维网结构时形成泡沫。 聚烯烃纤条体的水性悬浮液也可以含有纤维素纤维。

    Production of fibers by centrifugal spinning
    8.
    发明授权
    Production of fibers by centrifugal spinning 失效
    通过离心纺生产纤维

    公开(公告)号:US5494616A

    公开(公告)日:1996-02-27

    申请号:US239311

    申请日:1994-05-06

    CPC classification number: C08G14/10 D01D5/18

    Abstract: A process for producing fibers by spinning a resin by a centrifugal spinning process comprises supplying a resin solution having a viscosity from 50 to 200 Pa.s at the spinning temperature to a whirler plate and ensuring that the resin solution is under a sufficient pressure to completely fill the nozzles of the whirler plate as the fibers are being spun. The process is particularly suitable for producing fibers based on amino resins. In the apparatus the supply line for the resin is preferably located within the driveshaft.

    Abstract translation: 通过离心纺丝法纺出树脂来制造纤维的方法包括在旋转温度下将粘度为50-200Pa.s的树脂溶液供给到旋转板,并确保树脂溶液处于足够的压力下完全 当纤维正在旋转时,填充旋转板的喷嘴。 该方法特别适用于生产基于氨基树脂的纤维。 在该设备中,用于树脂的供应线优选位于驱动轴内。

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