GB354200A - Improvements in or relating to the treatment of materials containing organic derivatives of cellulose - Google Patents

Abstract

The scroop of materials, such as woven, knitted, or net fabrics and especially taffeta, containing organic derivatives of cellulose, such as cellulose acetate, formate, propionate, butyrate or other esters of cellulose, methyl, ethyl or benzyl cellulose or other cellulose ethers with or without yarns of other fibres such as cotton, reconstituted cellulose, natural silk or wool, is increased by treatment with salts of polybasic organic aliphatic acids with or without oily bodies. Salts mentioned, which may be used in solution or suspension are the sodium, potassium, ammonium, barium, or calcium salts of tartaric, oxalic, or citric acid and the oily bodies mentioned, which may be vegetable, animal, or mineral, are cotton-seed, olive or neatsfoot oil and they may be used as an emulsion in a suitable emulsifying agent. The material, preferably after other required finishing treatment such as dyeing, printing, or scouring, is treated with the reagent, excess being removed by wringing or centrifuging, and then dried without washing. In examples taffeta fabric is treated with (1) sodium tartrate or oxalate with or without an olive oil emulsion, (2) calcium or (3) potassium oxalate with an olive oil emulsion or (4) barium oxalate alone. The Specification as open to inspection under Sect. 91 (3) (a) includes also the use of polybasic acids such as tartaric, citric and oxalic acids themselves and an example describes the use of a solution of tartaric acid together with an olive oil emulsion; this subject-matter does not appear in the Specification as accepted.