Abstract:
Shrink-resistance is provided in a wool textile by applying ionizing radiation and a polymer resin (or mixture of resins) selected such that the resin will be bonded onto the wool fibres and form a relatively thin application, the process being carried out substantially at ambient temperature. The radiation step may be a preliminary step followed by the fixing of polymer resin or polymer resin mixture onto the wool in the absence of catalysts or alternatively the polymer resin may be applied before the radiation process. The polymer resin may be just one resin selected from a group of known resins having a shrink-resistant effect on wool textiles when fixed thereto by prior art techniques, or a mixture of such known resins may be used.
Abstract:
A method for the preparation of a composition containing PCS from polyisocyanates which comprises the following steps in the stated order:Step 1: Mixing a polyisocyanate with(a) an aqueous solution of an alkali metal or ammonium bisulphite or metabisulphite, or an aqueous solution of a mixture of any two or more of these salts, and(b) a compound or mixture of compounds containing on average one or more tertiary amino group per molecule, and(c) at least one water miscible solvent containing a hydroxy and/or ether group.Step 2: Mixing the reaction mixture from Step 1 with either or both of(d) at least one mineral acid or a solution thereof(e) an aqueous dispersion, emulsion, or latex of at least one water-insoluble organic polymer prepared from the polymerization of at least one ethylenically unsaturated monomer or an organic polymer containing a plurality of urethane linkages.
Abstract:
Hydrophilic additives are provided which may be introduced into fibrous articles to provide improved water absorbency and charge dissipation properties which resist abrasion and laundering. The fibrous articles are treated by contacting the articles with at least one hydrophilic additive and nitrogen catalyst under conditions sufficient to incorporate additive and catalyst in the article, followed by heating the treated article to obtain the desired fiber characteristics.
Abstract:
The present invention relates to new compounds which are graft copolymers of cellulose and polyacrylthiomide with the general formula
WHEREIN A is cellulose m is the degree of polymerization of cellulose ranging from 150 to 2,000 N IS THE DEGREE OF POLYMERIZATION OF POLYACRYLTHIOAMIDE RANGING FROM 400 TO 4,000; METHOD OF PRODUCING THESE NEW COMPOUNDS AND TO APPLICATION THEREOF. The method of producing said compounds resides in treating graft polymers of cellulose and polyacrylonitrile with hydrogen sulphide or with salts of hydrosulphuric acid in an aqueous or an organic medium at a temperature of 60*-100* C and subsequently isolating the target product. The herein-proposed compounds can find application as electronexchange complex-forming materials in chemical industry, metallurgy and in other industries.
Abstract:
A method of finishing cellulose-containing textile materials by applying a bath containing at least one finishing agent to the textile material. Application of the amount of bath which is applied being controlled such that the total percentual amount of applied bath in addition to the moisture content of the textile material, based upon the dry weight of such material, at most amounts to (W2/150) + 40), wherein W represents in percent the water retention capacity of the textile material determined in accordance with test method ASTM-D2402-65T. The equipment for practising the invention to produce these finished textile products or materials embodies at least one applicator device which preferably is constituted by at least one applicator or kiss roll for applying the finishing bath, there being further provided control means for regulating the rotational speed of such kiss roll to precisely regulate the amount of applied bath.
Abstract:
A process for teating wool and other proteinaceous material to render it shrinkproof which comprises treating the proteinaceous material with a polymerizable treating solution which comprises a urethane-polyisocyanate composition containing (OH)n, (NCO)p and
GROUPS, WHEREIN N IS A NUMBER FROM 0 TO 4.5, P IS A NUMBER FROM 1.5 TO 6 AND N + P IS 3 TO 6, AND Q IS FROM 1 TO 20, WHEREIN THE SAID COMPOSITION CONTAINS TERTIARY NITROGEN, TO THE EXTENT OF AT LEAST 0.05 PERCENT BY WEIGHT AND, THEREAFTER, CURING THE THUSTREATED PROTEINACEOUS MATERIAL WITH WATER.
Abstract:
Highly purified anhydrous monomeric formaldehyde vapor was prepared for immediate deposition on the surface of fibers of cotton. The process produced fabrics with enhanced physical properties with the deposition of oxymethylene polymer with molecular weights up to 18,000 and without significant crosslinking of the cellulosic chains. Supplementary treatments were applied to the oxymethylene polymer treated fabrics to further enhance the textiles with various desirable ''''washwear'''' characteristics.