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    • 3. 发明授权
    • Foam of thermoplastic urethane elastomer composition and process for producing the foam
    • 热塑性聚氨酯弹性体组合物的泡沫和泡沫的制造方法
    • US06849667B2
    • 2005-02-01
    • US10148998
    • 2001-10-11
    • Ryuuji HaseyamaMasahiko HashibaKaoru YoritaShigeo NishikawaYoko Shimada
    • Ryuuji HaseyamaMasahiko HashibaKaoru YoritaShigeo NishikawaYoko Shimada
    • B29C44/34C08G18/08C08J9/12C08G18/28
    • C08J9/122B29C44/348C08G18/14C08G2101/00C08J2203/08C08J2375/04
    • The method of the present invention for producing a urethane-based thermoplastic elastomer composition foam comprises the steps of: adding and mixing 0.1 to 30 parts by weight of carbon dioxide (B) to 100 parts by weight of a urethane-based thermoplastic elastomer composition (A) in a molten state, wherein said urethane-based thermoplastic elastomer composition (A) comprises a urethane-based thermoplastic elastomer (A-1) and other thermoplastic elastomer (A-2) in an (A-1)/(A-2) ratio of 20/80 to 99/1 by weight, to form a molten urethane-based thermoplastic elastomer composition (C) which is in a state of a mixture of the urethane-based thermoplastic elastomer composition (A) and the carbon dioxide (B) (gas dissolving step); and lowering a temperature of said molten urethane-based thermoplastic elastomer composition (C) (cooling step). The present invention can produce the urethane-based thermoplastic elastomer foam of stable quality over a range from low foamed product to highly foamed product by adding a given quantity of carbon dioxide in the molten urethane-based thermoplastic elastomer quantitatively and stably. It can also produce the foam excellent in flexibility, thermal insulation and surface appearances. It is also excellent in safety, because of use of carbon dioxide in place of the common foaming agent of fluorochlorohydrocarbon or butane, thus causing no air pollution or destruction of the ozone layer.
    • 本发明的氨基甲酸酯类热塑性弹性体组合物泡沫体的制造方法包括以下步骤:将0.1〜30重量份的二氧化碳(B)与100重量份的氨基甲酸酯类热塑性弹性体组合物 (A-1)/(A-(A-1))中的氨基甲酸乙酯系热塑性弹性体(A-1)和其他热塑性弹性体(A-2) 2)比为20/80〜99/1,形成处于氨基甲酸酯类热塑性弹性体组合物(A)和二氧化碳(A)的混合状态的熔融氨基甲酸酯类热塑性弹性体组合物(C) (B)(气体溶解步骤); 所述熔融氨基甲酸酯类热塑性弹性体组合物(C)的温度下降(冷却工序)。本发明可以通过添加给定的低发泡产品至高度发泡的产品,从而生产质量稳定的氨基甲酸酯类热塑性弹性体泡沫体 定量稳定地熔融氨基甲酸酯类热塑性弹性体中的二氧化碳量。 它还可以产生柔韧性,绝热性和表面外观优异的泡沫。 由于使用二氧化碳代替氟代氯代烃或丁烷的普通发泡剂,所以安全性也优异,因此不会造成空气污染或破坏臭氧层。
    • 6. 发明授权
    • Addition method of supercritical carbon dioxide, and production process of expanded thermoplastic resin product by making use of the addition method
    • 超临界二氧化碳的添加方法,以及通过添加方法生产膨胀热塑性树脂制品的方法
    • US06328916B1
    • 2001-12-11
    • US09351336
    • 1999-07-12
    • Shigeo NishikawaEiichi SugiharaMasahiro TakedachiKaoru YoritaHaruo InoueYoko ShimadaMichio Eriguchi
    • Shigeo NishikawaEiichi SugiharaMasahiro TakedachiKaoru YoritaHaruo InoueYoko ShimadaMichio Eriguchi
    • B29C4402
    • B29C44/348B29C44/3446
    • This invention provides a method for stably adding a predetermined amount of supercritical carbon dioxide at a fixed delivery rate into a forming machine and also a process for producing an expanded thermoplastic resin product by making use of the addition method. Carbon dioxide is charged from a liquefied carbon dioxide cylinder (1) into a predetermined amount deliverable pump (2) while allowing the carbon dioxide to remain in a liquefied state. When the carbon dioxide is pressurized and delivered by the predetermined amount deliverable pump (2), a delivery pressure of the carbon dioxide is controlled at an optional pressure within a range of from a critical pressure (7.4 MPa) of carbon dioxide to 40 MPa to deliver the carbon dioxide without any fluctuation of the amount of the delivery by setting up the pressure of a pressure control valve (3). The carbon dioxide is heated to a critical temperature (31° C.) of carbon dioxide or higher to convert it into supercritical carbon dioxide. This supercritical carbon dioxide is then added to a molten thermoplastic resin in the forming machine (4).
    • 本发明提供了一种以固定的输送速率将预定量的超临界二氧化碳稳定地添加到成形机中的方法,以及通过使用添加方法制造发泡热塑性树脂产品的方法。 二氧化碳从液化二氧化碳气瓶(1)装入预定量的输送泵(2)中,同时使二氧化碳保持在液化状态。 当二氧化碳被预定量的可输送泵(2)加压和输送时,二氧化碳的输送压力被控制在从二氧化碳的临界压力(7.4MPa)到40MPa的范围内的任选压力到 通过设置压力控制阀(3)的压力来输送二氧化碳而没有输送量的任何波动。 将二氧化碳加热至二氧化碳或更高的临界温度(31℃)以将其转化为超临界二氧化碳。 然后将该超临界二氧化碳加入到成形机(4)中的熔融热塑性树脂中。