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    • 2. 发明授权
    • Blowing agent compositions and compositions curable to give elastomeric
silicone foams
    • 发泡剂组合物和可固化以得到弹性体硅酮泡沫的组合物
    • US5332762A
    • 1994-07-26
    • US44423
    • 1993-04-09
    • Adolf MaschbergerChristian Freyer
    • Adolf MaschbergerChristian Freyer
    • C08J9/02C08J9/12C08L83/04C08J9/00
    • C08J9/125C08L83/04C08G77/12C08G77/20C08J2383/04
    • Blowing agent compositions (a) comprising aqueous emulsions containing organopolysiloxanes (1), emulsifiers (2), water (3) and thickeners (4) which may be used in the preparation of elastomeric silicone foams.The blowing agent compositions are used in curable compositions to form elastomeric silicone foams which comprise the blowing agent compositions (a), diorganopolysiloxanes (b), crosslinking agents (c) and, if appropriate, crosslinking catalysts (d) and optionally fillers (e). Elastomeric silicone foams are prepared by mixing the blowing agent compositions (a), with curable organopolysiloxane compositions containing diorganopolysiloxanes (b), crosslinking agents (c) and, if appropriate, crosslinking catalysts (d) and optionally fillers (e) and also optionally additional substances and then the resultant mixture is cured at temperatures in the range of from 100.degree. to 250.degree. C. with simultaneous foaming to form the elastomeric silicone foams.
    • 包含可用于制备弹性硅酮泡沫的有机聚硅氧烷(1),乳化剂(2),水(3)和增稠剂(4))的水性乳液的发泡剂组合物(a)。 发泡剂组合物用于可固化组合物中以形成弹性体硅酮泡沫,其包含发泡剂组合物(a),二有机聚硅氧烷(b),交联剂(c),如果合适的话,交联催化剂(d)和任选的填料(e) 。 通过将发泡剂组合物(a)与包含二有机聚硅氧烷(b)的可固化的有机聚硅氧烷组合物,交联剂(c)和(如果合适的话)混合交联催化剂(d)和任选的填料(e)以及任选的附加 然后将所得混合物在100-250℃的温度下固化,同时发泡以形成弹性硅酮泡沫。