摘要:
A polymeric film for the rinse release of wash additives comprises an outer film layer of a hydroxybutylmethylcellulose (HBMC)/hydroxypropylmethylcellulose (HPMC) blend. An inner film layer is a PVA film having a metalloid oxide cross-linking agent present in an amount sufficient to cause the PVA film to gel in a pH of below about 9.0. Both film layers include a plasticizer and may include a surfactant. The film can be used as a seal for an insoluble container, or made into a water-soluble pouch. Optionally, either a third film layer of the HBMC/HPMC blend, or a nonwoven fabric layer may be included for greater durability. The films remain intact during normal wash cycles and over a range of typical water temperatures, then rapidly dissolve in the rinse.
摘要:
A process for making carrier sheets of paper, treated with aqueous solutions of heat-hardenable, aminoplast condensation resins, such as, the reaction products of melamine, urea, thiourea, and like aminoplast constituents with formaldheyde, in which the treated sheet is stretched, as by passing it over broad-drawing rollers while it is in a warm-deformable condition (at a temperature between about 80.degree. to 130.degree.C), transversely with respect to the grain of the paper and, if desired, longitudinally with respect to the grain of the paper, and the treated stretched sheet is then cooled to a temperature of about 30.degree.C by blowing with air or passing the same over cooling rollers. The treated sheet may be stretched after it has passed through a heated drying channel, to dry and procondense the heat-hardenable aminoplast condensation resin, and before the temperature has dropped below that at which the sheet is no longer in a warm-deformable condition or the sheet may be cooled after passage through the heated drying channel and then reheated to a warm-deformable condition. The treated, stretched sheets of the present invention are pressed on wood panels in a heated hydraulic press and preferably in a heated short-cycle press.
摘要:
A selectively permeable composite membrane is produced by providing a solution of a film-forming polymer, impregnating a liquid in which the film-forming polymer is insoluble to a porous backing material to the extent that at least one of surfaces of the backing material remains substantially free from the liquid while other portions thereof become wet, applying the solution of film-forming polymer to the surface of backing material to form a layer thereof, and gelling said layer of solution to form a membrane thereof.
摘要:
THE PREPARATION OF CELLULOSIC YARNS AND FABRICS HAVING 0.6-11% OF THE CELLULOSIC HYDROXYL GROUPS REPLACED BY CHLORINE ATOMS, AND A FURTHER 0.3-9% OF THE HYDROXYL GROUPS REPLACED BY CARBOXYALKYLTHIO OR CARBOXYARYLTHIO GROUPS, IN ADDITION TO APPRECIABLE CELLULOSE CROSSLINKING, LEADS TO TEXTILES OF INCREASED WRINKLE RECOVERY IN THE WET STATE, INCREASED AFFINITY FOR MOISTURE AND METAL IONS, ENHANCED AFFINITY FOR BASIC DYES, AND INCREASED RESISTANCE TO CELLULOSE SOLVENTS. THE CELLULOSIC TEXTILE IS FIRST CONVERTED TO CHLORODEXYCELLOSE IN TEXTILE FROM BY REACTION WITH THIONYL CHLORIDE IN DIMETHYLFORMAMIDE AT 20-30* C., AND IS SUPSEQUENTLY REACTED WITH MERCAPTO-SUBSTITUTED CARBOXYLIC ACIDS AT TEMPERATURES OF 50-110*C., IN THE PRESENCE OF SUFFICENT ALKALI METAL HYDROXIDE TO CONVERT BOTH THE MERCAPTO- AND CARBOXYLIC ACID GROUPS TO THEIR ANIOMIC FORMS, IN A SOLVENT CONSISTING OF MIXTURES OF STRAIGHT CHAIN ALIPHATIC ALCOHOLS WITH WATER, TO REPLACE SOME OF THE CHLORINE ATOMS BY CARBOXYALKYLTHIO- OR CARBOXYARYLTHIO-GROUPS.
摘要:
THE PREPARATION OF CELLULOSIC YARNS AND FABRICS HAVING 0.67%-11% OF THE CELLULOSIC HYDROXYL GROUPS REPLACED BY CHLORINE ATOMS, AND A FURTHER 0.33%-7% OF THE HYDROXYL GROUPS REPLACED BY (AMINOALKYL) AMINO GROUPS, IN ADDITION TO APPRECIABLE CELLULOSE CROSSLINKING, LEADS TO TEXTILES OF INCREASED WRINKLE RESISTANCE IN THE WET STATE, ENHANCED AFFINITY FOR ACID DYES, AND INCREASED RESISTANCE TO CELLULOSE SOLVENTS. THE CELLULOSIC TEXTILE IS FIRST CONVERTED TO CHLORODEOXYCELLULOSE IN TEXTILE FORM, BY REACTION WITH THIONYL CHLORIDE IN DIMETHYLFORMAMIDE AT 20*-30* C., AND IS SUBSEQUENTLY TREATED WITH AN ALIPHATIC POLYAMINE DISSOLVED IN A STRAIGHT-CHAIN ALCOHOL OF 3-6 CARBON ATOMS AT 90*-130*C., TO REPLACE SOME OF THE CHLORINE ATOMS BY (AMINOALKYL)AMINO GROUPS.
摘要:
An amino compound containing at least one primary amino group, a carbonyl compound containing at least one aldehyde or keto group and an isonitrile compound are applied to a cellulosic material and reacted thereon. The cellulosic material so modified has increased resistance to degradation from heat and acids and is suitable as an insulator in electrical devices.
摘要:
Electrically conducting fibers are prepared by introducing cyanic groups into a synthetic or natural starting fiber and then subjecting the fiber to a heat treatment with a copper compound, a reducing agent capable of reducing bivalent copper ions to monovalent copper ions, and a sulfur-containing compound capable of discharging a sulfur atom or sulfur ion for reaction with monovalent copper ions adsorbed by the fiber so that copper sulfide is impregnated into the fibers. Heat treatment with the sulfur-containing compound can be simultaneous with or separate from heat treatment with the copper compound and reducing agent. The electrically conducting fibers of the present invention have excellent conductivity, improved washability and are not plagued by the problem of static charging associated with the starting synthetic or natural fiber.
摘要:
Disclosed herein is a process for producing a durable press cellulosic textile fabric comprising to the fabric applying an aqueous mixture of a thermosetting durable press textile reactant, and a crosslinking acrylic polymer, a crosslinking catalyst, making the fabric into a garment or article and subsequently pressing and curing said mixture on the article.
摘要:
DIETHYLAMINOETHYLATED CELLULOSIC FIBERS, THE DIETHYLAMINOETHYL GROUPS OF WHICH ARE IN AN ACID SALT FORM, PROVIDE A BUILT-IN CATALYST FOR THE REACTION OF SAID FIBERS WITH METHYLOLATED NITROGEN CONTAINING CROSS-LINKING AGENTS WITH WHICH SAID FIBERS ARE CONTACTED.