A method for improving the aging resistance of the sidewalls of retreaded tires is provided. The method involves the steps of treating the surface of the sidewalls of the worn tire to be retreaded with an aqueous solution or dispersion containing a film-forming polymer and an antiozonant, retreading the treated tire and then curing the treated retreaded tire thereby causing the antioxidant to migr...

PCT No. PCT/GB93/01465 Sec. 371 Date Jan. 24, 1995 Sec. 102(e) Date Jan. 24, 1995 PCT Filed Jul. 13, 1993 PCT Pub. No. WO94/02622 PCT Pub. Date Feb. 3, 1994Polyester particles in suspension in a liquid can be agglomerated below their melting points and the agglomerated particles are more easily filtered.

True spherical fine particles of a water soluble polymer or a crosslinked product thereof, and a method for their production are disclosed. The method comprises spray drying an aqueous solution of a mixture of a water-soluble polymer and an additive such as a polyhydric alcohol or an oligosaccharide. The removal of the additive may be effected by crosslinking or washing the particles.

Polycarbonate granules are produced by adding a solution of polycarbonate in an organic solvent to a suspension composed of water, an anti-solvent for polycarbonate and polycarbonate powder with stirring while evaporating and removing the organic solvent for polycarbonate added to the suspension. The procedure may be effected in the presence of a stabilizing agent for polycarbonate. The resulting ...

The invention relates to a method of preparing a flame-retarding, expandable mixture of polyphenylene ether and a polyvinylaromatic compound, comprising suspending in an aqueous medium a quantity from 1 to 50 parts by weight of polyphenylene ether, 50 to 99 parts by weight of at least one vinylaromatic monomer and a quantity of at least one phosphate ester which is active as a flame-retardant, add...

A substrate (11) of light-transparent material with a mask pattern (12) of light-absorbing material on it is provided. The substrate (11) has first regions (13) and second regions (14) which are not covered by the absorbing material. The optical thickness of the substrate (11) in the first regions (13) differs from that in the second regions (14) in such a way that there is a phase difference of 1...

A polyorganosiloxane composition having a biocompatible surface thereon is disclosed. The biocompatible surface results from the derivatization, or amination, of the surface intended for cell contact. More specifically, the present invention is a polyorganosiloxane composition in which the surface is either treated with a primary amine and optional peptide or the surface is co-cured with a primary...

A tunnel driving machine (10) is provided with an inertial measuring system (12) for detecting attitude and position even on curved paths, and an additional height-measuring system (18) serves to detect settling movements of the tunnel driving machine (10) in order to derive appropriate correction signals.

Openings (7) in the conveyor table (6) are selectively closable by a control device (9) so that in at least one area of the table the suction action is controllable by closing, or partly closing, these holes. The control device is formed as a slide which is sealed and movable in relation to the conveyor table, and is provided with openings (10) corresponding to the openings in the conveyor table i...

A process is claimed for the prodn. of OH gp.-contg. cpds. (I) with a content of less than 0.2 wt% 4,4'-diaminodiphenyl- methane (MDA) and/or 2,4-toluylenediamine (TDA), for use in the polyisocyanate-polyaddition process, from waste polyurethane and/or polyurea (II) contg. more than 5 wt% 4,4'-MDI and/or 2,4-TDI. The process comprises (a) reacting (II) (chopped to an average particle dia. of 0.1-5...

The invention concerns a process for preparing expanded polyolefin particles by impregnation under pressure of polyolefin granulates with a volatile expanding agent in suspension and subsequent relaxation, ammonia being used as the expanding agent.

Crosslinked organopolysiloxane particles (I) consisting of a single molecule, with an average dia. of 5-200 nm, in which at least 80% of the particles have a dia. which varies from the average dia. by not more than 30%, and which are soluble in a solvent to the extent of at least 5 wt%. Also claimed is a process for the prodn. of (I). Pref. particles (I) have an average mol. wt. of 10<5>-10<10>. T...

The sensor (30,31) has an oscillatory mass (1) to which is attached a first mass (2) which is free to deflect and an exciter (21) for the oscillatory mass. A monitor (27) detects the deflection of the first mass and a second mass (8) which is free to deflect is also attached to the oscillatory mass. The directions of deflection of the first and second masses are not parallel to one another nor to ...

An ethylene polymer having a Polydispersity Index of at least about 3.0, a melt index, MI, and a Relaxation Spectrum Index, RSI, such that (RSI)(MI< alpha >) is greater than about 26 when alpha is about 0.7, and a Crystallizable Chain Length Distribution Index, Lw/Ln, less than about 3 is provided. Such ethylene polymer has processability equivalent or superior to even conventional high pressure...

The present invention relates to a needs analysis method an computer system to enable business to obtain personalised business assistance. The system comprises of a computer program providing for a plurality of main questions relating to the potential needs of a user. Each of the questions is answerable by an affirmation or denial by, for example, a selection of either a marker on the screen or th...

The invention relates to articles of manufacture comprising spongeous matrices which may have a controlled pore size and/or distribution, formed of: Component (a) glucomannan; and Component (b) at least one other aqueous gel-forming polysaccharide; and optionally Component (c) at least one water soluble hydrocolloid other than the foregoing. The invention also relates to processes for fabricating ...

The present invention provides a lubricating oil composition containing an extreme-pressure agent which is a dithiocarbamate-type organometallic compound containing wear resistance and friction characteristics superior to those conferred by conventional organometallic compound. The lubricating oil composition comprises a lube base oil and 0.01 to 10 % by weight, based on the whole composition, of ...

This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (A) an antiwear improving amount of at least one molybdenum containing composition, and (B) at least one member selected from the group consisting of (i) at least one borated overbased metal salt of an acidic organic compound, provided that (A) and (Bi) are not the same, (ii) a comb...

A method for making an activatable and/or deactivatable magnetic ink for printing, on all types of products, magnetic indicia in replacement of anti-theft tags or filaments, wherein said printed indicia can be detected by security magnetic or electromagnetic gates. The printed ink includes iron, iron oxide and a ferrosilicon cobalt or ferrosilicon nickel alloy in powder form, in an organic binder....