Abstract:
There are disclosed novel copolycondensed vinylphosphonates and a process for their preparation. These products may be used as flame retardant monomers and are especially suitable for flame retarding textiles and a variety of other flammable substrates.
Abstract:
Novel fluoroalkyl ethers, typically (CF3)2CF-O-CH2-CH2-Br, are prepared by reacting a ketone with an alkali metal fluoride, then reacting the resulting intermediate with a dihaloethane. These ethers may be dehydrohalogenated by reaction with alcoholic KOH to yield the corresponding fluoroalkyl vinyl ethers, e.g., (CF3)2CF-O-CH=CH2. The vinyl derivatives are useful for providing oil- and water-repellent coatings on fibrous materials, e.g., fabrics.
Abstract:
POLYMERS HAVING A FIBROUS STRUCTURE ARE OBTAINED BY THE POLYMERIZATION OF SOLUTIONS AND/OR EMULSIONS OR DISPERSIONS FULLY OR PARTIALLY SOLIDIFIED IN CRYSTALLINE FORM, OF ETHYLENICALLY UNSATURATED MONOMERS WITH AT LEAST TWO POLYMERIZABLE DOUBLE BONDS OR MIXTURES CONTAINING AT LEAST 0.01% WEIGHT OF THESE MONOMERS AND MONOETHYLENICALLY UNSATURATED MONOMERS BY IRRADIATION, WHICH POLYMERS CAN BE OBTAINED IN THE FORM OF NOVEL POROUS MATERIALS(=POROMERIC MATERIALS) HAVING PROPERTIES SIMILAR TO LEATHER.
Abstract:
Production of poromeric materials by impregnating flat fibrous structures with liquids containing monoolefinically unsaturated monomers and high polymeric plastics in dissolved, emulsified or dispersed form, but no polyolefinically unsaturated monomers, freezing the impregnated fibrous structures, irradiating the frozen structures to effect polymerization of the monomers, and freeing the poromeric materials from the remaining liquid. The poromeric materials may be used as floor coverings, insulating materials, leather substitutes and coating materials.