Abstract:
A method for preparing a fluorochemical composition comprising a polyurethane by reacting: (A) fluorochemical oligomer of formula (I): M.sup.f.sub.m M.sub.n --Q.sup.1 --T.sup.1, wherein: M.sup.f.sub.m M.sub.n represents fluorochemical oligomer comprising m units derived from fluorinated monomer and n units derived from fluorine-free monomer and wherein the fluorinated monomers and fluorine-free monomers may be the same or different; m represents a value of 2 to 40; n represents a value of 0 to 20; T.sup.1 is --OH or --NH.sub.2 ; Q.sup.1 and T.sup.1 together represent the organic residue obtained by removing a hydrogen atom from a chain transfer agent that is functionalized with T.sup.1 ; (B) difunctional compound capable of reacting with an isocyanate; (C) monofunctional compound capable of reacting with an isocyanate and comprising a poly(oxyalkylene) group with (D) triisocyanate. Substrates treated with fluorochemical compositions prepared according to the method, have good stain release properties, particularly for oily stains and water based stains such as wine, tea and coffee.
Abstract:
The present invention relates to products with enhanced hydrophilicity produced by treating polyester materials such as fibers, yarns and fabrics with aqueous solutions or dispersions of metal hydrides or complex metal hydrides.
Abstract:
The invention is a process whereby a fibrous cellulosic textile material is rendered wrinkle resistant by impregnating the material with an aqueous mixture of urea and at least one phosphoric acid, wherein the mole ratio of urea to phosphoric acid is about 4:1 to 8:1, to deposit thereon about 7.0-35% by weight of urea, and about 3.0-9.0% by weight of the phosphoric acid, based on the weight of the untreated material; heating the treated material to obtain a phosphorylated material; contacting the phosphorylated material with an aqueous solution of cyanamide to deposit thereon about 0.75-13.5% by weight of cyanamide, based on the weight of the phosphorylated material; and, heating the treated material to impart wrinkle resistance thereto.
Abstract:
A process for the non-permanent flameproofing of organic fibrous materials with monoammonium or monoalkali metal salts of an alkylphosphonic acid is claimed. Monoammonium methyl- and ethylphosphonate are also claimed. The claimed process is suitable for a very wide variety of fibrous materials. The flame-retardants used according to the invention have no corrosive action and have excellent compatability with most other textile finishing agents.
Abstract:
A method for modifying fibers of a fabric which comprises the steps of applying an effective amount of a heat activated fiber modifying agent to a fabric, heating a portion of the fabric for a period of time effective to initiate a chemical reaction between the fibers of the fabric being heated and the fiber modifying agent while maintaining a temperature differential between the heated portion of the fabric and the remainder of the fabric to thus control the area of penetration of the chemical reaction into the fabric, quenching the chemical reaction, and thereafter recovering the product.
Abstract:
A continuous in-line flock cutting process is disclosed, for making flock from tow which contains a lubricant which is detrimental to the flock and must be removed.The tow is continuously fed, heat treated and immersed in an aqueous scouring liquid, and is continuously wet-processed. The excess scouring liquid is squeezed out, the tow is rinsed with water, rinse water is squeezed out, and a finish is applied to the tow and partially squeezed out in an in-line continuous process to remove a portion of the applied finish. Thus processed, the still-wet tow is continuously cut into wet flock, the wet flock is then dried and beaten to open up and separate the individual flock particles, and screened.
Abstract:
Permanent crease properties are given to wool-synthetic fiber blends, such as wool-orlon blends, and to wool alone. The process is slightly different in the two cases, wool-synthetic blends being treated by chlorinating and oxidizing agents under acid pH''s. After washing and drying, creases in garments are restored. In the case of wool only, the same chlorination and/or oxidation treatment is used and then in a separate step, after removing the chlorination-oxidation residue, treated with synthetic resin finish, which is then cured. In both cases the treatment with the chlorination-oxidation agent is under acid conditions.
Abstract:
TEXTILE ARTICLES OF CELLULOSIC FIBERS, NON-CELLULOSIC FIBERS AND ARTICLES COMPRISING BLENDS OF CELLULOSIC AND NON-CELLULOSIC FIBERS, WITH IMPROVED SOIL AND STAIN RESISTANCE QUALITIES AND SOIL AND STAIN RELEASE QUALITIES, ARE PRODUCED BY CONTACTING THE ARTICLES WITH A FINISHING MIXTURE COMPRISING AN ALDEHYDE-RELEASING COMPOUND, ANIMAL GLUE AND A PLASTICIZER FOR THE ANIMAL GLUE; AND BY CURING THE FINISH.
Abstract:
A method of forming a solution of a solid includes the steps of: (1) forming a dispersion which comprises (a) a liquid, (b) the solid dispersed in powder form and (c) a polymeric binder dissolved in the liquid, and (2) mixing the dispersion with the solvent under conditions such that the powder dissolves in the solvent. If a solution prepared by this method is allowed to dry out, the polymeric binder binds the powder and thus suppresses dust formation. The method has particular application to solids which are reactive textile auxiliaries. A dispersion of a solid in powder form in an aqueous liquid contains a major proportion of a low viscosity, water-soluble cellulose ether and a minor proportion of a natural polysaccharide gum.