Patent GB-889041-A (GB)
Title: Process and compositions for laundering textiles
Inventor: KATZBECK WALTER J
IPC: C11D3/382
Filed: 1959-02-24
Abstract: A process for inhibiting soil redeposition during the laundering of textiles comprises incorporating with the water and detergent or wetting agent a soil-suspending aid comprising grain by-product solubles.  Such by-products may be sorghum steepwater, potato wash liquor, top water from wheat starch and gluten refining, refinery waste from corn syrup manufacture, lactic acid process residue or corn fibre residue from the corn wet milling process, solubles from distillery residue after the fermentation of whole corn grain, corn germ residue from the spent germ from corn extractors, and the zein aqueous effluent from the waste product in the zein separation of gluten, but the preferred by-product, which is used in amounts of 0,25-50% by weight of solids based on the detergent or wetting agent, or in a concentration of 0,001-0,1% by weight of solids based on the washing liquid, is the soluble solids obtained from corn steepwater; such by-products are stated to contain phytic acid, phytates, lactates, amino acids, and sugars.  The detergent or wetting agent may be a sodium or potassium soap, or an anionic or non-ionic synthetic detergent or wetting agent, such as an alkyl sulphate of sulphonate, or alkylaryl sulphonate in the form of the sodium, potassium, ammonium or amine salts, or a polyalkylene glycol ether, thioether, or ester, e.g. a long chain fatty acid ester of polyethylene glycol, and is generally used in concentrations from 0,05-0,5% by weight based on the wash water.  Sodium carbonate, tripolyphosphate, biborate, metasilicate and sulphate may also be incorporated.  The soil suspending aid may either be used in the normal liquid form in which uncooked, gelatinized or modified starch or starch derivatives may be blended, or may be flash-, freeze-, spray-, or roll-dried in the presence of the builders, if required, before addition to the detergent or wetting agent.ALSO:A process for inhibiting soil redeposition during the laundering of textiles comprises incorporating with the water and detergent or wetting agent a soil-suspending aid comprising grain by-product solubles.  Such by-products may be sorghum steepwater, potato wash liquor, top water from wheat starch and gluten refining, refinery waste from corn syrup manufacture, lactic acid process residue or corn fibre residue from the corn wet milling process, solubles from distillery residue after the fermentation of whole corn grain, corn germ residue from the spent germ from corn extractors, and the zein aqueous effluent from the waste product in the zein separation of gluten, but the preferred by-product, which is used in amounts of 0.25%-50% by weight of solids based on the detergent or wetting agent, or in a concentration of 0.001%-0.1% by weight of solids based on the washing liquid, is the soluble solids obtained from corn steep-water; such by-products are stated to contain phytic acid, phytates, lactates, amino acids, and sugars.  The detergent or wetting agent may be a sodium or potassium soap, or an anionic or non-ionic synthetic detergent or wetting agent, such as an alkyl sulphate or sulphonate, or alkylaryl sulphonate in the form of the sodium, potassium, ammonium or amine salts, or a polyalkylene glycol ether, thioether, or ester, e.g. a long chain fatty acid ester of polyethylene glycol, and is generally used in concentrations from 0.05%-0.5% by weight based on the wash water. Sodium carbonate, tripolyphosphate, biborate, metasilicate and sulphate may also be incorporated.  The soil suspending aid may either be used in the normal liquid form in which uncooked, gelatinized or modified starch or starch derivatives may be blended, or may be flashfreeze-, spray-, or roll-dried in the presence of the builders, if required, before addition to the detergent or wetting agent.