摘要:
This disclosure is concerned with an improved process of treating keratin-containing fiber materials with aqueous solutions of polyisocyanate bisulphite adducts to improve their resistance to felting and shrinkage. The material is pretreated with an aqueous bath containing both a compound carrying a cationic group and the salt of a polyvalent metal or the material is pretreated with just the cationic compound but the polyvalent metal salt is present in the aqueous bath used to apply the bisulphite adduct.
摘要:
Textile materials consisting of or containing wool or other keratinous fibres are maintained, without external restraint, in a cohesively set configuration by depositing on the materials a substance that renders the materials resistant to loss of cohesive set during subsequent treatments to establish permanent set in the material.
WHEREIN R REPRESENTS A HYDROCARBON RADICAL, CONTAINING A CHAIN OR AT LEAST 3 AND AT MOST 60 CARBON ATOMS, R1 REPRESENTS AN ALKYLENE GROUP CONTAINING AT LEAST 2 AND AT MOST 6 CARBON ATOMS, R2 REPRESENTS A HYDROCARBON RADICAL, A, X, AND Y IN EACH OF THE P CHAINS ARE INDIVIDUALLY CHOSEN FROM THE GROUP COMPRISING ZERO AND 1, WITH THE PROVISO THAT X AND Y ARE UNEQUAL, P IS AN INTEGER OF AT LEAST 3 AND AT MOST 6, Q IS CHOSEN FROM THE GROUP COMPRISING ZERO AND POSITIVE INTEGERS OF AT LEAST 1 AND AT MOST 3, (P+Q) IS AT MOST 6, OPTIONALLY IN COMBINATION WITH OTHER POLYMERIC POLYMEROPTIONALLY IN COMBINATION WITH OTHER POLYMERIC POLYMERCAPTANES, AMINOPLASTS, EPOXY RESINS, ACRYLIC RESINS, ACRYLAMIDE OR POLYISOCYANATES. THE POLYMERS CURE ON THE FIBRE. THE KERATINOUS MATERIALS ARE RENDERED RESISTANT TO SHRINKAGE AND DURABLE PRESS CHARACTERISTICS ARE IMPARTED TO THEM. THE TREATED MATERIAL RETAIN THEIR DIMENSION AND SHAPE WHEN WASHED IN MACHINES AND HAVE GOOD RECOVERY FROM WRINKLING.
摘要:
A method of treating wool or cotton fibers to improve their resistance to, and recovery from, deformations encountered, for example, in the wrinkling of garments during wearing and in the deterioration of dimensions and shape of such articles during use or washing, which method comprises subjecting the fibers to a heat treatment while maintaining the regain within the range corresponding to the range of relative humidities encountered under normal use and for a period sufficient to allow the rearrangement of at least a proportion of the hydrogen bonds in the fibers in their minimum energy configuration. The method may form part of a process for rendering the articles dimensionally stable to machine washing and drying, in accordance with which the fibers treated as above are reacted with a reagent capable of forming permanent cross-links between reactive groups in the fibers.
摘要:
Proteinous animal fibers are rendered shrinkproof by passing said directly through a high-voltage electrical discharge ozonegenerating zone which is at atmospheric pressure and open to the atmosphere. The dyeing properties of the fiber are unaffected by the treatment. Apparatus embodying both planar and curved discharge zones are described.
摘要:
AROMATIC POLYAMIDE FIBER, FABRICS, AND OTHER SHAPED ARTICLES ARE CONVERTED INTO DIMENSIONALLY STABLE FIREPROOF PRODUCTS BY CONSTURCTIVE HEAT TREATMENT AT ELEVATED TEMPERATURES WITH ELEMENTAL SULFUR UNDER CONTROLLED CONDITIONS.