Synthese von Tricyclohexylphosphoniumbromiden aus einem luftstabilen Phosphinderivat
作者:Hans Jürgen Bestmann、Reinhard Dötzer
DOI:10.1055/s-1989-27198
日期:——
Synthesis of Tricyclohexylphosphonium Bromides from an Air-Stable Phosphine Derivative Reaction of tricyclohexylphosphine-carbon disulfide complex 5 with primary alkyl bromides 4 produces tricyclohexylphosphonium bromides 1 in good yields, making isolation of the phosphine 3 unnecessary. In two cases for 4g, h, rearranged products were obtained.
ACRYLIC RUBBER COMPOSITION, ACRYLIC RUBBER MOLDED PRODUCT, AND METHOD FOR PRODUCING SAME
申请人:DAIKIN INDUSTRIES, LTD.
公开号:US20140346707A1
公开(公告)日:2014-11-27
The present invention aims to provide an acrylic rubber composition capable of giving an acrylic rubber molded product good in low-friction properties and non-sticking properties. The present invention relates to an acrylic rubber composition containing an acrylic rubber (A) and a fluororesin (B), the fluororesin (B) being a perfluororesin.
ACRYLIC RUBBER COMPOSITION, AND CROSSLINKED PRODUCT THEREOF
申请人:Zeon Corporation
公开号:EP2837657A1
公开(公告)日:2015-02-18
Provided is an acrylic rubber composition having further improved compression set resistance and comprising, based on 100 parts by mass of (a1) an acrylic rubber obtained by copolymerizing 0.1 to 10% by mass of a crosslinkable group-containing monomer, (a2) 0.4 to 50.0% by mass of a liquid fluororubber, and the crosslinked product thereof.
Disclosed is a rubber laminate containing an unvulcanized fluororubber composition comprising: (A) fluororubber comprising a terpolymer containing 50 to 60 mol % of a constitutional unit derived from vinylidene fluoride, 20 to 30 mol % of a constitutional unit derived from tetrafluoroethylene, and 10 to 30 mol % of a constitutional unit derived from hexafluoropropene; (B) an oxide and/or hydroxide of a divalent metal; (C) a polyhydroxy aromatic compound; (D) a 2-substituted-4,6-dithiol-s-triazine derivative; (E
1
) a quaternary phosphonium salt or a tetraalkyl ammonium salt; (E
2
) 1,8-diazabicyclo[5.4.0]undecene-7 (salt); and (E
3
) a 5-substituted-1,5-diazabicyclo[4.3.0]-5-nonene (salt). In this rubber laminate, the fluororubber layer and the NBR layer are firmly vulcanization-bonded to each other without impairing various excellent characteristics of the fluororubber constituting the rubber layer.