Preparation of foamed silicone elastomers

• Main Authors: CRAMTON, JOHN, Q, BECK, GERHARD, SHAVA DARA, WENDITT, CHRISTIAN, HUKKANEN ERIC J, FISHER MATTHEW, SHAH ANISH B, SONNENSCHEIN MARK F, BRUNE DOUGLAS A, PAULIK, NEVIN, A, SLADE DAVID RICHARD, HENNING JODY J
• Format: Patent
• Language: Chinese; English
• Published: 30.09.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present disclosure relates to a continuous process for making foamed silicone elastomers and compositions for forming the foamed silicone elastomers in the process. The composition used comprises: i) an organopolysiloxane having at least two silicon-bonded unsaturations per molecule; ii) an organohydrogen siloxane having at least two silicon-bonded hydrogen atoms per molecule; iii) a hydrosilylation catalyst; and iv) a physical liquid blowing agent. Foamed silicone elastomers are prepared from such compositions. 本公开涉及制造发泡有机硅弹性体的连续方法和用于在所述方法中形成该发泡有机硅弹性体的组合物。所使用的组合物包含：i)有机聚硅氧烷，该有机聚硅氧烷每分子具有至少两个硅键合的不饱和基团；ii)有机氢硅氧烷，该有机氢硅氧烷每分子具有至少两个硅键合的氢原子；iii)氢化硅烷化催化剂；以及iv)物理液体发泡剂。发泡有机硅弹性体由此类组合物制备。