摘要:
Polymer blends with improved impact strength consisting essentially of a polyamide and a copolymer of an .alpha.-olefine, an amide and an ester of an .alpha.,.beta.unsaturated carboxylic acid.
摘要:
Copolyamides with improved properties are obtained by polycondensing aliphatic and/or aromatic dicarboxylic acids with an amine mixture of diaminodicyclohexyl methanes and optionally homologous polycyclohexyl polyamines and one or more aliphatic diamines, said copolyamide being useful for the production of shaped articles such as films, sheets and injection moldings.
摘要:
A moulding composition consisting of:From 60 to 93 parts, by weight, of a polyamide;From 6 to 30 parts, by weight, of a polyethylene; andFrom 1 to 20 parts, by weight, of a copolymer of an aromatic vinyl compound, an .alpha., .beta.-unsaturated mono- and/or di-carboxylic acid or an anhydride thereof, free acid groups optionally being neutralized by a mono- and/or poly-amine or with ammonia, and an ester of the said mono- and or di-carboxylic acid.
摘要:
Polymer mixtures consisting essentially ofA. a polyethylene with a melt index of above 15 g/10 min,B. a graft polymer of an ethylene/(meth)acrylic acid copolymer as graft substrate and grafted polymerized units of .epsilon.-caprolactam, andC. a poly-.epsilon.-caprolactam.
摘要:
Liquid stoving-lacquer systems based on oil-free polyesters obtained by reacting polybasic carboxylic acids or their anhydrides and 2-ethylpropane diol-1.3 and optionally additional polyhydric alcohols, are highly compatible with melamine resins.
摘要:
An aqueous two-component coating agent whose binder consists essentially of a combination of a) a polyol component present dissolved and/or dispersed in water comprising a1) at least one water-dilutable polymerisation resin or polycondensation resin with a molecular weight Mn of over 500 possessing hydroxyl groups and a2) a reactive diluent consisting of at least one water-soluble compound with a molecular weight Mn of under 500 capable of reacting with isocyanate groups and b) a polyisocyanate component with a viscosity at 23.degree. C. of from 50 to 10 000 mPa present emulsified in the aqueous solution or dispersion, a method for producing such coating agents wherein the said polyisocyanate component is emulsified in the said aqueous solution or dispersion with the optional incorporation of auxiliary substances and additives in the system prior to adding the polyisocyanate, and the use of the coating agents for the production of air-drying and/or heat-drying coatings.
摘要:
Immunodiagnostic tests in which enzymes or antibodies are bound to porous carrier materials can be carried out by employing as porous carrier materials macroporous polymer membranes which are prepared by(a) dispersing an insoluble filler in a solution which contains at least two incompatible polymers in amounts which lead to phase separation in the solution, resulting in a homogeneous casting solution, and(b) applying this solution to a support and carrying out a precipitation coagulation.
摘要:
A thermoplastic molding composition suitable for the preparation of foam is disclosed. The composition comprises a thermoplastic resinous component and a foaming agent which includes A) (i) 0.01 to 4.8% alumina hydrate (aluminum hydroxide) in combination with (ii) 0.01 to 4.8% of an acidic additive or B) 0.01 to 4.8% of the reaction product of said (i) and said (ii), the percentages being relative to the weight of the composition to be foamed. The invention is based on the finding that the foaming of the composition does not lead to any significant reduction in molecular weight of the resinous component or to troublesome discoloration of the foam, even during its re-extrusion.
摘要:
The invention relates to a process for the production of polyamide imides from diimidodicarboxylic acids, trimellitic imidocarboxylic acids and diisocyanates and to their use as moldings, films and binders for paints.
摘要:
Composite membranes of a macroporous filler-containing membrane of at least two incompatible polymers and a pore-free polyurethane membrane applied there to exhibit an improved action in the removal of benzenes optionally suhstituted by lower alkyl radicals, hydroxyl, chlorine or bromine from their mixtures with aliphatic and/or cycloaliphatic hydrocarbons, alcohols, ethers, ketones and/or carboxylic acid esters or from effluent.