The invention relates to a cylindrical winding tube (1) made of cardboard, wound layers of paper or plastic, on which chemical yarns are wound to form cross-wound bobbins. Such a bobbin tube possesses in a normal plane, in the vicinity of one end face, a yarn-catching slit (2) which extends over some of the circumference and which consists of a drop-in piece (4) and of a clamping piece (5). To cat...

Disclosed is a method of reducing the friction coefficient between water and surfaces of polymeric articles and of increasing the water repellency of said surfaces, which method comprises treating said surfaces with a corrosive agent, and thereafter coating them with a thin layer of fluorinated polymer.

The heat insulating refractory is composed of (A) 40-90 wt% one at least one component selected from silicon or silicate(from silica), calcium or calcium salt(from calcium sulphate), or aluminum or aluminum salt(from alumina), (B) 1.5-30 wt% at least one component selected from vegetable fiber such as cellulose fiber, chemical fiber such as polyacrylonitrile or mineral fiber, (C) 0.1-0.5 wt% hydro...

A hydraulic composition comprising blast furnace slag powder, a water-soluble polymer and an alkaline substance, and a high-strength composite material produced by kneading and molding a composition which comprises blast furnace slag powder, a water-soluble polymer, an alkaline substrate and water, and wet curing the molded composition. The high-strength composite material has high bending strengt...

The invention relates to derivatives of 10,11,12,13-tetrahydro-desmycosin, wherein R stands for O or (OC2H5)2, R<1> stands for Si(CH3)3 or H, R<2> stands for H, OH, I or OSO2CH3, which are novel semisynthetic antibiotics of the tylosin series, possessing antibacterial activity, to their pharmaceutically acceptable salts with inorganic or organic acids, to processes for their preparation ...

A stretchable nonwoven polyolefin fabric is produced by heat fusing a web of a mixed fiber containing at least 30 wt.% of a highly crimpable and heat-fusible conjugate fiber of polyolefin in such a manner that the area of each heat fusion point ranges from 0.007 to 0.8 cm<2> and the sum of the areas accounts for 10 to 40 % of the surface of the web and heat treating the web thus fused to crimp and...

There is provided a tap water purifier to be directly coupled to a faucet pipe, which includes a water purifying barrel filled with a filter medium and a cylindrical valve body integral with the purifying barrel. The purifying barrel having opposite opening ends. The valve body is inserted in a cylindrical bore formed in a casing for rotation about the longitudinal axis of the valve body. The casi...