Abstract: A polysiloxane containing terminal imide groups and process for the preparation thereof by a Michael addition reaction comprising reacting a bismaleimide with a polysiloxane diamine. The imide group-containing polysiloxane has good compatibility with organic resins.

Abstract: Disclosed are epoxy resin compositions comprising essentially (A) multi-functional epoxy resins, (B) imide-modified silicone compounds, (C) phenolic novolaks having more than 2 OH groups, and (D) inorganic fillers. When cured, these compositions have excellent processability and lower internal stress as compared to a similar composition without the imide-modified silicone compounds. These compositions are useful for sealing semiconductor devices or other molding applications.

Abstract: A method for the production of a highly water absorptive resin comprises the steps of neutralizing acrylic acid with alkali metal hydroxide to form an alkali metal acrylate; mixing the alkali metal acrylate, methacrylic acid, a polymerization initiator, and a first crosslinking agent; suspending and dispersing the mixture in an aqueous medium to for an initial mixture; polymerizing the initial mixture to produce a polymerized intermediate, and separating the moisture from the polymerized intermediate by azeotropic distillation to reduce the water content to 15-35% by weight; adding a second crosslinking agent, said second crosslinking agent having two epoxy radicals; and mixing "Syloid" of silicate, to form a highly water absorptive resin.

Abstract: The present invention provides a novel resin composition possessing excellent heat resistance and flame retardance without the flame dripping during combustion. The claimed resin composition comprises a matrix resin composed of two types of resin components with improved heat resistance; an organic flame retardant; antimony trioxide; and a thermoplastic phenoxy resin.

Abstract: A thermosetting polymide resin composition having an excellent molding processing property, heat resistance, low mold shrinkage, and good external appearance of its manufacture which comprises a modified bismaleimide resin prepared by reacting the Michael addition reaction of bismaleimides with aromatic primary diamines and aromatic secondary diamines, an inorganic filler, silicone oil, and a mixed catalyst composed of organic peroxides and imidazoles.

Abstract: The present invention relates to novel cephalosporin compounds having high antimicrobial activity, which are shown by the formula(I), and to a process for preparing them ##STR1## wherein R.sup.1 is a hydrogen atom or an amino protecting group;R.sup.2 is acetoxy; andR.sup.3 is a hydrogen atom or a carboxyl protecting group (wherein when R.sup.2 contains quaternary ammonium, r.sup.2 and R.sup.3 may form a zwitter ion).The present invention also relates to the non-toxic and pharmaceutically acceptable salts of the cephalosporin compounds of the formula (I). Also described are compositions containing the antibiotics according to the present invention.

Abstract: The present invention relates to an apparatus and to a method for the preparation of mosaic floor decorations. More particularly, the present invention relates to an apparatus and to a method for the preparation of mosaic floor decorations which conveniently and uniformly arrange the dispersed chips in order to achieve an aesthetically pleasing design. The method comprises harmonizing chip pieces having various colors and shapes by uniformly arranging the chips by dispersing them upon a substrate by using a sliding-table having many different incline angles.

Abstract: The present invention relates to a novel process for the preparation of insecticidally active esters of the general formula (I) ##STR1## wherein R.sub.1 and R.sub.2 are the same or diferent from each other and represent a hydrogen or a halogen atom; R.sub.3 represents ##STR2## (wherein R.sub.4 and R.sub.5 represent a chlorine or bromine atom or a methyl group when R.sub.4 is identical to R.sub.5, but R.sub.4 represents a chlorine or bromine atom or a methyl group and R.sub.5 represents a trifluoromethyl group when R.sub.4 is different from R.sub.5, and R.sub.6 represents a halogen atom or a difluoromethoxy group); and R.sub.8 represents a hydrogen or a cyano group.The characteristic of the present invention is a one-step procedure comprising directly condensing an organic acid, an aldehyde (and a water-soluble cyanide) in the presence of a phase transfer catalyst and a water-soluble inorganic base by the use of a sulphonyl compound as a condensing reagent.

Abstract: A given amount of crystalline polypropylene resin is blended with an olefin copolymer rubber to prepare a preblend comprising an olefin copolymer rubber/crystalline polypropylene and then the preblend is melt-blended with a crystalline polypropylene resin in the presence of peroxide. The present invention is based upon the fracture mechanism occurring between the crystalline polypropylene and rubber and is accomplished by the reciprocal combination of the reactions such as cross-linking reaction, random scission reaction of the polymer main chain, graft reaction and blocking reaction to form a cell structure. An object of the present invention is to provide a method which results in a product having better homogeneity, better heat-resistance, higher impact-resistance and greater flowabilty than heretofore known methods of preparation.