Preparation and Catalytic Properties of Tetra-n-butylphosphonium Hydroxide(TBPH)

Abstract

Abstract: Quaternary phosphonium hydroxide(TBPH) is a very effective catalyst for rearrangement polymerization of organosloxanes. Such as octamethylcyclotetrasiloxane, may be polymerized to a linear dimethylsiloxane polymer by TBPH. In this paper it was found that this kind of catalysts exhibited a stronger basicity than quaternary ammonium hydroxides for a transient reaction. Methyltetramer polymerized at 90—100 ℃ with about 0.01% of the silanolate of TBPH. TBPH was synthesized and applied in the production of smell-less silicone oil.

Key words: Tetra-n-butylphosphonium hydroxide(TBPH), Catalyst, Silicone oil

CLC Number:

O643.3

TrendMD:

WU Tong-Hao, YANG Xu-Wei, YANG Hong-Mao, JIANG Yu-Zi. Preparation and Catalytic Properties of Tetra-n-butylphosphonium Hydroxide(TBPH)[J]. Chem. J. Chinese Universities, 2004, 25(4): 737.

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Preparation and Catalytic Properties of Tetra-n-butylphosphonium Hydroxide(TBPH)

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