Abstract: There is provided a method of producing an organopolysiloxane with a low polymerization degree in a high yield, comprising a step of allowing a monochlorosilane represented by the following general formula (I) and hexamethylcyclotrisiloxane to undergo ring-opening reaction in the presence of a quaternary ammonium salt represented by the following general formula (II) and a step of hydrolyzing the reaction product: ##STR1## wherein R groups are the same or different, and each group represents an alkyl group containing 1 to 18 carbon atoms, an aryl group or a hydrogen atom;R.sup.1.sub.4 N.sup.+ X.sup.31 (II)wherein R.sup.1 groups are the same or different, each group representing an alkyl group containing 1 to 18 carbon atone, and X- represents an anion.

Abstract: Disclosed are purified polyether silicone addition reaction products of a hydrogen siloxane and a polyoxyalkylene containing a terminal double bond, which in unpurified form contains one or both of unreacted polyoxyalkylene and internal rearrangement side reaction products thereof which generate unpleasant odors in the reaction product upon storage and upon contact with water, substantially free from said unreacted polyoxyalkylene and rearrangement products thereof so that the total quantity of ketones and aldehydes produced by a treatment of the purified polyether silicones in a closed system at 60.degree. C. for 24 hours with a quantity of 10 .sup.

Abstract: Disclosed are purified polyether silicone addition reaction products of a hydrogen siloxane and a polyoxyalkylene containing a terminal double bond, which in unpurified form contains one or both of unreacted polyoxyalkylene and internal rearrangement side reaction products thereof which generate unpleasant odors in the reaction product upon storage and upon contact with water, substantially free from said unreacted polyoxyalkylene and rearrangement products thereof so that the total quantity of ketones and aldehydes produced by a treatment of the purified polyether silicones in a closed system at 60.degree. C. for 24 hours with a quantity of 10.sup.

Abstract: Siloxane compounds having a hydroxyalkyl radical incorporated in their betaine moiety exhibit improved surface tension reduction and are thus useful hair cleaning agents. They can be efficiently synthesized at a low cost without autoclaving.

Abstract: A heat resistant martensitic stainless steel having an improved creep rupture strength is described. This steel consists of, in weight percent, 0.05% to 0.12% carbon, not more than 0.5% silicon, not more than 1.5% manganese, not more than 1.5% nickel, 9.0 to 13.0% chromium, 0.5 to 2.0% molybdenum, 0.05 to 0.50% vanadium, not more than 0.15% nitrogen, and, if desired, at least one of 0.02 to 0.50% columbium, 0.02 to 0.5% tantalum, 0.5 to 2.0% tungsten, and 0.0003 to 0.0100% boron, with the balance being iron and incidental or inevitable impurities, and wherein the weight ratio of carbon to nitrogen (C/N) is not more than 3:1.