Abstract:
Compositions and textile sizes based on those compositions, which are particular poly(vinyl alcohol) copolymer ionomers, as well as blends of those ionomers with other sizing polymers are described. A process to prepare the ionomers is described. The compositions are poly(vinyl alcohol) copolymers which have carboxylic acid ionomer comonomer units. Sizes based on these ionomers are aqueous solutions of the ionomers or solutions of blends of them with other poly(vinyl alcohol) polymers which are not ionomeric, or solution/suspensions of the ionomers with various starches, or both. Desizing in either water or caustic solutions is generally far superior to comparable polymer blends which contain no poly(vinyl alcohol) copolymer ionomer.
Abstract:
A hot-melt warp yarn size composition (13) and a method for applying, desizing, and disposing of it which essentially eliminates atmospheric and water pollution at all stages of the process. The size (13) is a melt blend of ethylene/vinyl acetate copolymer with microcrystalline, paraffin, or hydrogenated tallow wax. It is applied (12) as a melt to warp yarn (10), desized (15) with hot petroleum solvent, and the extracted size and unrecovered solvent burned (17) to non-polluting carbon dioxide and water.
Abstract:
A fungal alpha-amylase is provided from Aspergillus terreus (AtAmy1). AtAmy1 has an optimal pH of 4.5 and is operable at 30 75 degrees C, allowing the enzyme to be used in combination with a glucoamylase and a pullulanase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AtAmy1 also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DP1 + DP2) compared to the products of saccharification catalyzed by an alpha-amylase from Aspergillus kawachii. This facilitates the utilization of the oligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.
Abstract:
A process for producing woven or knitted fabrics having an improved fastness, high qualities, and the width as large as 150 cm from yarn-dyed raw silk while evading possible occurrence of defects caused by piece dyeing, such as shading, friction marks, creases or bending. The process comprises the step (3) of union dyeing of sericin which surrounds the silk and fibroin which is contained within the silk, the steps (4 and 5) of preparing yarn-dyed raw silk by doubling the dyed silk fibers followed by twisting, the step (6) of producing fabric by weaving or knitting the yarn-dyed raw silk, the step (7) of swelling the raw silk constituting the fabric in a hot-water bath, and the step (8) of enzymatic degumming by treating the fabric with an enzyme capable of hydrolyzing the sericin of the swollen yarn-dyed raw silk.
Abstract:
Method of anti-stain redeposition of stains on textiles in natural, synthetic, or artificial fibres or their mixtures, during operations of dry cleaning or de-oiling by means of stabilised perchloroethylene. It is characterised by the fact that to this perchloroethylene is incorporated a sufficient quantity of one or more than one nitrile chosen in the groups of those whose boiling point is less than or equal to 130 C and of those forming with perchloroethylene an azeotrope whose boiling point is lower than 130 C, in order to obtain an anti-greying effect. Application of this method to textile materials, for example in cotton, wool, polyester, polyacrylonitrile or polyamide.
Abstract:
A fungal alpha-amylase is provided from Aspergillus fumigatus (AfAmyl). AfAmyl has an optimal pH of 3.5 and is operable at 30 - 75 degrees C, allowing the enzyme to be used in combination with a glucoamylase and an isoamylase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AfAmyl also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DPI + DP2) compared to the products of saccharification catalyzed by an alpha-amylase from Aspergillus kawachii. This facilitates the utilization of the oligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.
Abstract:
A composition is provided for improving decolorizing and desizing garments and fabrics with a reducing agent in a washer. A surfactant is added so as to improve wet out and to reduce the surface tension of the water.
Abstract:
A fungal alpha-amylase is provided from Aspergillus fumigatus (AfAmy1). AfAmy1 has an optimal pH of 3.5 and is operable at 30 - 75 degrees C, allowing the enzyme to be used in combination with a glucoamylase and a pullulanase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AfAmy1 also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DP1 + DP2) compared to the products of saccharification catalyzed by an alpha-amylase from Aspergillus kawachii . This facilitates the utilization of the oligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.