Low density polyurethane foam, method of producing, and articles comprising the same
    6.
    发明申请
    Low density polyurethane foam, method of producing, and articles comprising the same 有权
    低密度聚氨酯泡沫,生产方法和包含其的制品

    公开(公告)号:US20060025493A1

    公开(公告)日:2006-02-02

    申请号:US11200536

    申请日:2005-08-09

    IPC分类号: C08G18/00

    摘要: A method for producing a cured, low-density polyurethane foam, the method comprises frothing a reactive polyurethane-forming composition comprising an isocyanate-containing component, an active hydrogen-containing component reactive with the isocyanate-containing component, a blowing agent, a surfactant, and catalyst system, wherein the catalyst system provides for a delayed curing of the foam; casting the frothed reactive polyurethane-forming composition onto a first carrier; placing a second carrier on a side of the cast foam opposite the first carrier; blowing the froth with the second carrier in place; and curing the blown froth so as to provide a polyurethane foam layer having a density of about 50 to about 400 kg/m3 and a thickness of about 0.3 to about 13 mm. The foams are useful as sealing members.

    摘要翻译: 一种固化的低密度聚氨酯泡沫体的制造方法,其特征在于,使含有异氰酸酯的成分,与含异氰酸酯的成分反应的活性氢成分,发泡剂,表面活性剂 和催化剂体系,其中催化剂体系提供泡沫的延迟固化; 将发泡的反应性聚氨酯形成组合物浇铸到第一载体上; 将第二载体放置在与第一载体相对的铸塑泡沫的一侧上; 用第二个载体吹泡沫就位; 并固化吹塑泡沫,以提供具有约50至约400kg / m 3的密度和约0.3至约13mm的厚度的聚氨酯泡沫层。 泡沫可用作密封件。

    Foam catalyst systems
    8.
    发明申请
    Foam catalyst systems 审中-公开
    泡沫催化剂体系

    公开(公告)号:US20040249078A1

    公开(公告)日:2004-12-09

    申请号:US10454554

    申请日:2003-06-04

    摘要: The present invention provides methods of producing polyurethane and polyisocyanurate foams comprising reacting and foaming a mixture of ingredients that react to form a polyurethane or polyisocyanurate foam in the presence of a catalyst solution comprising a catalyst solvent and about 60 wt % or less, based on the total weight of the catalyst solution, of alkali metal salt. Also provided are foams produced via the methods of the present invention.

    摘要翻译: 本发明提供了生产聚氨酯和聚异氰尿酸酯泡沫的方法,包括在包含催化剂溶剂和约60重量%或更少的催化剂溶剂的存在下,反应并发泡反应形成聚氨酯或聚异氰脲酸酯泡沫的成分混合物,基于 催化剂溶液的总重量,碱金属盐。 还提供了通过本发明的方法生产的泡沫。

    Compositions of a hydrofluoroether and a hydrofluorocarbon
    9.
    发明申请
    Compositions of a hydrofluoroether and a hydrofluorocarbon 失效
    氢氟醚和氢氟碳化合物的组合物

    公开(公告)号:US20030224957A1

    公开(公告)日:2003-12-04

    申请号:US10455065

    申请日:2003-06-05

    IPC分类号: C11D017/00

    摘要: This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula CaFbH2anull2nullbOc wherein anull2 or 3 and 3nullbnull8 and cnull1 or 2 and a hydrofluorocarbon of the formula CnFmH2nnull2nullm wherein 1nullnnull4 and 1nullmnull8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.

    摘要翻译: 本发明涉及包含至少一种氟代醚和至少一种氢氟烃的组合物。 本发明包括式CaFbH2a + 2-bOc的环状或无环氢氟醚的组合物,其中a = 2或3和3≤b≤8且c = 1或2,式CnFmH2n + 2- 其中1≤n≤4和1≤m≤8。 这种组合物可用作制冷剂,清洁剂,聚烯烃和聚氨酯的膨胀剂,气溶胶推进剂,传热介质,气体电介质,灭火剂,动力循环工作流体,聚合介质,微粒去除流体,载体流体,抛光磨料 ,和置换干燥剂。