Novel self-reinforced polymer composites of polyetherimide and a melt processable wholly aromatic polyester are prepared according to this invention. The wholly aromatic polyester exhibits anisotropic properties in the melt phase. Mixing is carried out at a temperature at which both the polyetherimide and the wholly aromatic polyester are melt processable. The products of this invention comprise a...

A process for producing a porous resin film containing a polyolefin resin as a main component, comprising melting a mixture of (A) 100 parts by weight of a polyolefin resin, (B) 0 to 50 parts by weight of a polyester-polyether type thermoplastic elastomer, and (C) a thermoplastic polyester resin having an instrinsic viscosity of not more than 0.5, the amount of the component (C) being from 25 to 9...

The internally heated rollers, for example on a drawframe, are conventionally circular for the heat treatment of the synthetic fibres running round on the outside. In the device according to the invention, the roller casing has at least one depression which extends axially over the length of the roller. The contact of the synthetic fibre in the region of this depression with the surface actively h...

A collagen film can be used in the form of a flat or tubular film as a membrane for separation by pervaporation. Preferred fields of application are indicated.

The hydraulic operating piston (1,2) is manufactured by pressing, from a sheet steel blank. The finished piston is a cylinder with a dished end. The dished end being the head end of the piston. The skirt of the piston has an annular groove (3) in which is located the rim of a bellows garter (15). The groove is formed during the process of trimming the excess material from the skirt. The dished end...

When a perfluoro(alkyl vinyl ether) such as perfluoro(propyl vinyl ether) is copolymerized with tetrafluoroethylene in the presence of 3 to 200 ppm. of telogenically inactive fluorinated dispersing agent, the resultant copolymer molding powder containing 0.02 to 0.26% by wt. of the vinyl ether comonomer has a low amorphous content, i.e. no greater than 8%, relative to the proportion of vinyl ether...

Method for the production of concrete mass and the mass produced. The mass is used for production of air-entrained concrete with high climate resistance, especially high resistance against frost cracking. The method includes mixing of binder, ballast and an air pore forming substance and liquid for activation of the binder. Cereal storage protein as gluten or a dispersion of the same is used as th...

Ultra-high-molecular-weight polyolefin fine powder characterized in that said fine powder has an intrinsic viscosity measured in decalin at 135 DEG C. of at least 10 dl/g and an average particle diameter in the range of 1-80 mu m, at least 20 weight % of the powder passing through 350 Tyler mesh screen.

A water soluble or swellable polymer gel is dispersed into a liquid phase to form a fluid composition and is worked while in that composition. The liquid phase is an aqueous solution of an equilibrating agent that substantially prevents aggregation of the particles or dissolution of the polymer during the working. The working may be, for instance, milling, extraction of impurities, extraction of w...

Prefoamed crosslinked propylene-type resin particles prepared by using as a base resin a propylene random copolymer whose amount of heat of crystallization determined by a DSC method is 19 to 10 cal/g. The prefoamed particles have a gel fraction of 1 to 65%. Also provided is a molded article of a crosslinked propylene-type resin which is a fused aggregate of the aforesaid prefoamed particles in wh...

A vibration preventing apparatus using fluid includes a main and an auxiliary fluid chamber in which fluid is confined. The main and auxiliary fluid chambers are communicated to each other by three kinds of orifices which exert different degrees of resistance to the flow of fluid. Two of such orifices which are smaller in resistance than the other are opened and closed independently of each other....

Substrates are coated by heating the substrates to temperatures of 120 DEG -260 DEG C. and dipping them into a bath of polyvinyl fluoride dispersed in latent solvent at temperatures below 100 DEG C.

A process for the treatment of a soft contact lens, to increase its resistance to the deposition thereon and diffusion and accumulation therein of substances which will promote its clouding and discoloration in use, and to improve its mechanical strength, includes treating a hydroxyl group-containing acrylic ester soft contact lens or replica with an organic acid anhydride for a sufficient period ...

An oxygen absorbing sheet is obtained by molding a resin composition comprising from 15 to 70% by weight of a thermoplastic resin and from 30 to 85% by weight of an oxygen absorbent into a sheet having a thickness of from 10 mu m to 5 mu m and stretching the sheet at least uniaxially at a stretch ratio of from 1.5 to 8.0. The absorbent is an iron powder, preferably of particle size 0.1-100 mu m an...

Polymeric film of water-vapour-permeable thermoplastic elastomer type and the process for its manufacture. The film in accordance with the invention is based on polyetheresteramide and preferably on block polyetheramide. The invention also relates to articles comprising such a film and capable in particular of coming into contact with the human body.

A two-fluid nozzle (10) which is adjustable to provide a substantially constant mixing energy. Adjustment of the two-fluid nozzle (10) is made in accordance with the pressure and mass flow values of the liquid and gas fed to the nozzle. A microprocessor (44) calculates the mixing energy from these values and provides an output to the nozzle (10) to adjust it should its mixing energy be in variance...

A thermoformable polyaryletherketone sheet of a thickness of about 625-5000 micrometers, having repeating units derived from diphenyl ether and terephthalyl and isophthalyl groups, especially a polyetherketoneketone in which the terephthalyl to isophthalyl isomer ratio is about 70:30 to 0:100, especially 60:40 to 50:50, which thermoformable sheet has a crystallinity of 5% of less, can be fabricate...

An electric pyramid lamp is composed of two sections, a pyramid lamp cover (1) based upon the geometric angles of the Great Pyramid of Cheops at Giza, and a fabricated pressed steel base unit (2). The pyramid lamp cover rests on the base unit for easy removal and use for standard pyramid energy work or to change for another pyramid lamp colour for personal use. The light source is of a low wattage...

On a sectional base (11), possibly with low-voltage power supply (12, 14), at least a longitudinal ferromagnetic zone (11A) is provided for the cooperation with permanent magnets (26) borne by lamp holders (20, L) or other objects to ensure the retention thereof on the base and the current supply by means of resilient appendixes (22, 24).