摘要:
A process for preparing alkenylbenzenes, which comprises reacting an alkylbenzene with 1,3-butadiene at elevated temperature in the presence of an alkali metal catalyst in the substantial absence of oxygen and moisture, characterized in that said catalyst is composed of1. 0.0005 to 0.03% by weight, based on the alkylbenzene, of metallic potassium, and2. metallic sodium in an amount expressed in percent by weight, based on the alkylbenzene, determined by the following relationship (i)-0.59x + 0.025 .gtoreq. Nawherein x is the amount expressed in percent by weight of the metallic potassium used.
摘要翻译:一种制备烯基苯的方法,其包括在碱金属催化剂存在下,在基本上没有氧和水分的情况下,在升高的温度下使烷基苯与1,3-丁二烯反应,其特征在于所述催化剂由1.0005-0.03 以金属重金属为基准的重量百分比,以及2.按照以下关系式(I)-0.59X + 0.025> / = Na WHEREIN确定的以亚苄基苯为代表的重量百分比的金属钠 X是使用金属钾的重量百分比表示的数量。
摘要:
An electrophotographic sensitive layer comprising a new soluble photoconductive resin containing an aromatic tertiary amino group of the following formula as a photoconductive functional group ##STR1## wherein .phi. represents a benzene nucleus containing at least one nitrogen-free electron donating substituent, C.sub.1 represents a carbon atom on the aromatic ring, and C.sub.2 represents a carbon atom which forms a hydrocarbon residue and takes a bond orbit of the SP.sup.2 or SP.sup.3 type; and the benzene nuclei represented by .phi. are bonded to each other through a methylene group to such an extent as to maintain the solubility of the resin.