Recyclable thermoplastics foam of high glass temperature
    2.
    发明授权
    Recyclable thermoplastics foam of high glass temperature 失效
    可回收的热塑性塑料泡沫玻璃温度高

    公开(公告)号:US5300543A

    公开(公告)日:1994-04-05

    申请号:US127724

    申请日:1993-09-28

    CPC分类号: C08J9/12

    摘要: A thermoplastic molding composition suitable for the preparation of foam is disclosed. The composition comprises a thermoplastic resinous component and a foaming agent which includes A) (i) 0.01 to 4.8% alumina hydrate (aluminum hydroxide) in combination with (ii) 0.01 to 4.8% of an acidic additive or B) 0.01 to 4.8% of the reaction product of said (i) and said (ii), the percentages being relative to the weight of the composition to be foamed. The invention is based on the finding that the foaming of the composition does not lead to any significant reduction in molecular weight of the resinous component or to troublesome discoloration of the foam, even during its re-extrusion.

    摘要翻译: 公开了一种适于制备泡沫的热塑性模塑组合物。 该组合物包含热塑性树脂组分和发泡剂,其包括A)(i)0.01至4.8%的氧化铝水合物(氢氧化铝)与(ii)0.01至4.8%的酸性添加剂的组合,或B)0.01至4.8%的 所述(i)和所述(ii)的反应产物的百分比相对于要发泡的组合物的重量。 本发明基于以下发现:组合物的发泡不会导致树脂组分的分子量的任何显着降低,或者即使在其再挤出期间泡沫的麻烦变色。

    Freeze dryer
    7.
    发明授权
    Freeze dryer 失效
    冷冻干燥机

    公开(公告)号:US4081914A

    公开(公告)日:1978-04-04

    申请号:US717556

    申请日:1976-08-25

    IPC分类号: F26B5/06 F26B13/30

    CPC分类号: F26B5/06

    摘要: A freeze dryer for the freeze drying of, for example, comestible products such as fruit juices and coffee, comprises a sublimation chamber having a heating plate upon which the products are disposed and an ice condenser spaced from the heating plate and upon which the moisture driven out of the product sublimes in the form of ice. According to the invention between the heating place and the ice condenser a heat pump is disposed so that the heat transferred to the ice condenser is returned via the heat pump to the heating plate.

    摘要翻译: 用于冷冻干燥例如果汁和咖啡等可食用产品的冷冻干燥机包括升华室,其具有加热板,产品被放置在该加热板上,冰冷凝器与加热板间隔开,并且湿度驱动 在产品中以冰的形式升华。 根据本发明,在加热场所和冰冷凝器之间设置热泵,使得传递到冰冷凝器的热量通过热泵返回到加热板。

    METHOD OF PREPARING ALKALI CELLULOSE OR A CELLULOSE DERIVATIVE
    9.
    发明申请
    METHOD OF PREPARING ALKALI CELLULOSE OR A CELLULOSE DERIVATIVE 审中-公开
    制备碱性纤维素或纤维素衍生物的方法

    公开(公告)号:US20110282050A1

    公开(公告)日:2011-11-17

    申请号:US12524466

    申请日:2007-11-30

    IPC分类号: C08B11/193

    CPC分类号: C08B1/08 C08B11/08 C08B11/193

    摘要: The throughput of a reactor for producing alkali cellulose and/or a cellulose derivative can be increased by using a granulated cellulose-based material for the preparation of alkali cellulose and/or a cellulose derivative. Cellulose derivatives of essentially the same quality can be produced as in known processes wherein powdered cellulose-based material is used for alkalization and derivatization.

    摘要翻译: 用于制备碱纤维素和/或纤维素衍生物的反应器的生产量可以通过使用用于制备碱纤维素和/或纤维素衍生物的颗粒状纤维素基材料来提高。 基本上相同质量的纤维素衍生物可以如已知的方法制备,其中粉末状纤维素基材料用于碱化和衍生化。