In a method for making a molded polyurethane article having a nonwoven material secured to the article's surface which comprises placing the nonwoven material on the internal surface of a mold, adding and foaming a polyurethane composition in the mold and recovering the molded polyurethane article with the nonwoven material attached to the surface of the article, the improvement which comprises co...

A polysiloxane-polyoxyalkylene composition of the nominal formula: wherein R is an alkyl group having 1 to 3 carbon atoms and R, R', R'' and R''' are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and the polyoxyalkylene of R' is a poly(oxypropylene-oxyethylene) ether which contains 20% to 60% oxyethylene by weight and has a...

A method for prepg. articles having superior tensile strength and modulus from polyvinyl alcohol (PVA) comprises (i) converting 5-50 wt.% PVA (wt. average m.w.=2.5X104-5X105) soln. to a material contg. water and capable of plasticizing at above m.p. in water, (ii) quick cooling at below f.p. to obtain gel material (GA) having homogeneous gel structure, (iii) eliminating most of water at below gel'...

Polyvinyl alcohol articles having high strength and modulus are prepared by the following processes; molding of polyvinyl alcohol in reasonable solvent at over melting point, transformation to gel by quick freezing to below gel-formation temp., extraction of solvent using mixture of water (20-95 volumn %) and alihatic alcohol or ketone and expansion at over glass-transition temp. and at below diss...

The viscosity of aromatic polyester polyols and polyether polyols is reduced by adding 5% to 15%, based on the weight of the polyol, of a cyclic organic viscosity reducing agent selected from propylene carbonate, ethylene carbonate, mixtures of ethylene carbonate and propylene carbonate, and caprolactone.

A method and apparatus is disclosed for electrically measuring the inside diameter of a metallic pipe such as oil or gas well casing. The transimpedance of two coaxial coils within the pipe is determined and then resolved into its inphase and quadrature components. The magnitudes of these two components are used to generate a corrected measurement output. A signal representative of the inside diam...

1. A process for the production of mouldings, especially cushions, from at least two foams, especially polyurethane foams forming fluid reaction mixtures of different elasticity or hardness, wherein a first and at least a second reaction mixture are introduced into a mould cavity and are left to react out to form a moulding having zones (4, 5, 8) of different elasticity or hardness before the moul...

PURPOSE:To enable a motor base to be set and to provide high strength of the base less expensively even if there is comparatively less space by a method wherein a motor base mounting fixture is divided into an upper one and a lower one. CONSTITUTION:A motor base mounting fixture is divided into an upper fixing fitting 4 and a lower fixing fitting 5. Due to this fact, a welding position with a moto...

PURPOSE:To detect a bolt fastening hole with high accuracy by fitting a stick to a potentiometer extending from a nearly spherical detection head so that it swings freely, and energizing forward a potentiometer mount body which is displaced forth and back freely. CONSTITUTION:Fastening holes detecting devices 1A and 1B for segments arranged opposite each other are moved forth while facing both cor...

ESTA INVENCION SE REFIERE A UN DISPOSITIVO BASCULANTE SOLTABLE UTIL PARA ACOPLAR RAMALES DE ANZUELO Y A UN APARATO PARA UNIR DE MANERA AUTOMATICA LOS DISPOSITIVOS BASCULANTES A LOS SEDALES Y EVITAR ASI EL PROBLEMA DEL ENREDO DE LOS PATINES AL ENROLLARSE EN CUBIERTA O EN UN TAMBOR.; The device includes a cylindrical stop sleeve (16) fixedly attached to the longline (14), and a detachable swivel bod...

SE HA PREVISTO UNA TAPA DE CHAPA PARA LATAS OVALADAS ALARGADAS EN FORMATO HANSA, QUE PRESENTA EN LA SUPERFICIE DE LA TAPA UNA ZONA ARRANCABLE, QUE ESTA LIMITADA POR UNA LINEA ENTALLADA EN SI CERRADA, QUE EN UN EXTREMO DE LA TAPA PUEDE SER ROTA POR MEDIO DE UNA BRIDA DE EMPUÑADURA FIJADA AQUI. EN EL OTRO EXTREMO LA LINEA ENTALLADA PRESENTA UNA SECCION DE LINEA ENTALLADA RECTILINEA QUE DISCURRE EN F...

LA PRESENTE INVENCION SE REFIERE A UN METODO PARA FABRICAR UNA ESTRUCTURA RIGIDA POROSA PARA USO COMO MOLDE, Y A LA ESTRUCTURA RIGIDA POROSA FORMADA CON AQUEL. PARTICULAS METALICAS DIVIDIDAS FINAMENTE SE RECUBREN CON UNA COMPOSICION QUE COMPRENDE UNA RESINA TERMOENDURECIBLE FLUIDA DISUELTA EN UN DISOLVENTE VOLATIL. DE MODO SIMILAR, PARTICULAR DE CARBURO SE RECUBREN CON LA MISMA COMPOSICION DE RESI...

This invention relates to new stable sulpho-adenosyl-L-methionine (SAMe) salts and the relative production process. Said salts have the following general formula: SAMe.nR(O)m(SO3H)p (I) where m can be zero or 1; n is 1.5 when p is 2, and is 3 when p is 1; R is chosen from the group consisting of alkyl, phenylalkyl and carboxyalkyl, in which the linear or branched alkyl chain contains from 8 to 18 ...

METODO PARA SINTETIZAR ACIDO DISOXIRRIBONUCLEICO DE CADENA LARGA, EN EL QUE SE UNEN DE MANERA PURAMENTE QUIMICA 2 A 5 EQUIVALENTES DE BLOQUES NUCLEOTIDOS QUE TIENEN 4 A 8 SECUENCIAS DE BASES, MEDIANTE UN DENOMINADO METODO EN FASE SOLIDA (METODO DEL TRIESTER), USANDO COMO SOPORTE UN VIDRIO DE POROS CONTROLADOS AMINADO Y LLEVANDOSE A CABO LA REACCION EN PRESENCIA DE UN AGENTE DE CONDENSACION Y UN DI...

Compounds are described of formula (II) (II) and salts thereof, wherein R1 reprsents a methyl, ethyl or isopropyl group; R2 represents a hydrogen atom or a group OR5 (where OR5 is a hydroxy group or a substituted hydroxyl group having up to 25 carbon atoms) and R3 represents a hydrogen atom, or R2 and R3 together with the carbon atom to which they are attached represent a >C=0 group; an...