Method and apparatus for the production of reaction mixtures from liquid
reaction components
    1.
    发明授权
    Method and apparatus for the production of reaction mixtures from liquid reaction components 失效
    从液体反应组分制备反应混合物的方法和装置

    公开(公告)号:US4050896A

    公开(公告)日:1977-09-27

    申请号:US722900

    申请日:1976-09-13

    CPC分类号: G01F1/74 B29B7/7621

    摘要: The instant invention is directed to a method and apparatus for measuring the proportion of undissolved gas in a liquid component for the production of foam materials, particularly, those based on polyurethane. The method is based on the equation of state of ideal gases (Boyle-Mariot Law: P .sup.. V = constant) at constant temperatures. The gas contained in a liquid component charged with gas increases its volume under expansion according to the above equation. The gas expansion causes expansion of the liquid gas mixture. The difference in the volumetric flow rate of the liquid, at two differing pressures, is therefore a measurement of the quantity of gas present in the liquid. The apparatus consists of one volumetric flow rate measurement unit connected upstream of a pressure drop unit, a second volumetric flow rate measurement unit connected downstream of the pressure drop unit and a differential value indicator connected to the first and second volumetric flow rate measurement units.

    摘要翻译: 本发明涉及一种用于测量用于生产泡沫材料的液体组分中未溶解气体的比例的方法和装置,特别是基于聚氨酯的泡沫材料。 该方法基于理想气体的状态方程(Boyle-Mariot法:P = V =常数)。 充入气体的液体成分中所含的气体根据上述等式增大其膨胀量。 气体膨胀导致液体气体混合物膨胀。 因此,在两个不同的压力下,液体的体积流量的差异是测量液体中存在的气体的量。 该装置包括连接在压降单元上游的一个体积流量测量单元,连接在压降单元下游的第二体积流量测量单元和连接到第一和第二体积流量测量单元的差分值指示器。

    Process for foam production using dissolved under pressure carbon dioxide
    4.
    发明授权
    Process for foam production using dissolved under pressure carbon dioxide 失效
    使用溶解在压力下的二氧化碳进行泡沫生产的方法

    公开(公告)号:US6127442A

    公开(公告)日:2000-10-03

    申请号:US194784

    申请日:1998-12-03

    摘要: A process is described for the continuous production of polyurethane block foam using carbon dioxide which is physically dissolved under pressure as a foaming agent, wherein before the polyol and isocyanate components are mixed the carbon dioxide is dissolved in the polyol component and air or nitrogen is dissolved in the isocyanate component, both components are fed to a mixing chamber in which a pressure prevails which is 70 to 150% of the solution pressure of the CO.sub.2 in the polyol component, the isocyanate component is fed to the mixing chamber at a pressure of at least 30 bar and is injected therein with depressurization down to the mixing chamber pressure, wherein air or nitrogen in an amount of at least 1 g per kg CO.sub.2 is dissolved in the isocyanate component, and after emerging from the mixing chamber the mixture is depressurization to atmospheric pressure.

    摘要翻译: PCT No.PCT / EP97 / 02688 371日期1998年12月3日第 102(e)日期1998年12月3日PCT提交1997年5月26日PCT公布。 公开号WO97 / 47453 日期:1997年12月18日描述了使用在压力下物理溶解的二氧化碳作为发泡剂连续生产聚氨酯嵌段泡沫的方法,其中在多元醇和异氰酸酯组分混合之前,将二氧化碳溶解在多元醇组分中, 将空气或氮气溶解在异氰酸酯组分中,将两种组分进料到其中以多元醇组分中的CO 2溶液压力为70至150%的压力占优势的混合室中,将异氰酸酯组分进料至混合室 在至少30巴的压力下,在其中向其中注入降压至混合室压力,其中每千克CO 2至少1g的量的空气或氮气溶解在异氰酸酯组分中,并且在从混合室出来之后 该混合物减压至大气压。

    Process and device for producing foam using carbon dioxide dissolved
under pressure
    5.
    发明授权
    Process and device for producing foam using carbon dioxide dissolved under pressure 失效
    使用溶解在压力下的二氧化碳生产泡沫的方法和装置

    公开(公告)号:US5840778A

    公开(公告)日:1998-11-24

    申请号:US836859

    申请日:1997-05-21

    摘要: A process is described for producing foam materials from two-component reactive plastics using carbon dioxide as blowing agent by mixing at least one of the reactive components with carbon dioxide under pressure, mixing the components, at least one of which contains carbon dioxide under pressure, expanding the reactive mixture containing carbon dioxide obtained by mixing, and hardening, wherein the expansion takes place suddenly with the production of high rates of shear. Preferably the rate of flow of the reaction mixture is reduced after expansion.

    摘要翻译: PCT No.PCT / EP95 / 04492 Sec。 371日期1997年5月21日 102(e)日期1997年5月21日PCT提交1995年11月15日PCT公布。 公开号WO96 / 16782 日期1996年6月6日描述了一种用于使用二氧化碳作为发泡剂的双组分反应性塑料生产泡沫材料的方法,其中将至少一种反应性组分与二氧化碳在压力下混合,将组分混合,其中至少一种含 二氧化碳在压力下膨胀,通过混合获得的包含二氧化碳的反应混合物和硬化,其中膨胀在产生高剪切速率的情况下突然发生。 优选地,膨胀后反应混合物的流速降低。

    Process and device for producing foam using carbon dioxide dissolved under pressure
    10.
    发明授权
    Process and device for producing foam using carbon dioxide dissolved under pressure 失效
    使用溶解在压力下的二氧化碳生产泡沫的方法和装置

    公开(公告)号:US06689325B2

    公开(公告)日:2004-02-10

    申请号:US09065143

    申请日:1998-04-23

    IPC分类号: B29C4322

    摘要: A process is described for producing foam materials from two-component reactive plastics using carbon dioxide as blowing agent by mixing at least one of the reactive components with carbon dioxide under pressure, mixing the components, at least one of which contains carbon dioxide under pressure, expanding the reactive mixture containing carbon dioxide obtained by mixing, and hardening, wherein the expansion takes place suddenly with the production of high rates of shear. Preferably the rate of flow of the reaction mixture is reduced after expansion.

    摘要翻译: 描述了一种用于使用二氧化碳作为发泡剂的双组分反应性塑料生产泡沫材料的方法,该方法是将至少一种反应性组分与二氧化碳在压力下混合,混合组分,其中至少一种在压力下含有二氧化碳, 膨胀含有通过混合获得的二氧化碳的反应混合物和硬化,其中膨胀突然发生,同时产生高剪切速率。 优选地,膨胀后反应混合物的流速降低。