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31. 发明专利

GB495025A Improvements in the treatment of cellulosic materials 未知
公开(公告)号：GB495025A
公开(公告)日：1938-11-02
申请号：GB945337
申请日：1937-04-02
申请人： JOHN GWYNANT EVANS , HENRY ALFRED PIGGOTT , CHARLES EDWARD SALKELD , REGINALD JOHN WILLIAM REYNOLDS , ERIC EVERARD WALKER , CLARENCE SYDNEY WOOLVIN , ICI LTD
IPC分类号： D06M13/322 , D06M13/46 , D06M13/463 , D06P1/66
摘要： Water-repellent properties are imparted to cellulosic material by impregnating it with an aqueous solution of a quaternary salt of the formula R.O.CH2.N.R.1.R11.R111.X. (where R is an aliphatic hydrocarbon radicle of at least 12 carbon atoms, N.R1.R11.R111 is a heterocyclic or aliphatic tertiary amine, and X is a salt-forming acid radicle other than halogen), and heating the impregnated material to a temperature such that the quaternary ammonium salt undergoes decomposition. The impregnated material is preferably dried at a relatively low temperature, e.g. 40 DEG C. and then heated to a higher temperature, e.g. 90-150 DEG C. to decompose the quaternary salt. Octadecyloxy-or cetyloxy-methylpyridinium sulphite or pyrosulphites obtainable by interacting the appropriate fatty alcohol with formaldehyde and sulphur dioxide in presence of pyridine, may be used. Other suitable salts are octadecyloxy- or cetyloxy-methyl pyridinium hydrogen oxalates obtainable by treating a methyl alcohol solution of the corresponding chlorides, sulphites, or pyrosulphites with oxalic acid. Other salts specified are octadecyloxymethyl pyridinium perchlorate, dodecyloxymethyl pyridinium nitrate, cetyloxymethyl pyridinium sulphate, myristyloxymethyl pyridinium acetate, octadecyloxy methyl pyridinium benzene sulphonate, and octadecenyloxymethyl pyridinium nitrobenzoate, all of which may be obtained from the corresponding chlorides, sulphites, or pyrosulphites by treatment with the appropriate acid or a salt thereof. In examples, plain woven cotton, cotton sheeting dyed with a Chlorazol dye, linen woven fabric, viscose artificial silk woven fabric, and undyed cotton sheeting, are impregnated or padded with an aqueous solution of one of the compounds specified above. The materials are squeezed, dried in a current of warm air, and then heated at temperatures of 105-140 DEG C. for periods of 2 hours to 5 minutes. The materials are water-repellent and have a soft handle. Dyed materials have an increased fastness to washing. Cotton, flax, jute, sisal, hemp, wood pulp, and other vegetable fibrous matter, in yarns or as woven or knitted fabrics, or matted materials such as paper, or cardboard, or regenerated cellulosic material in the forms of filaments, fibres, or films, may be subjected to the treat ment. Specifications 475,119 and 488,869 are referred to.

32. 发明专利

GB466817A Improvements in the treatment of cellulosic material 未知
公开(公告)号：GB466817A
公开(公告)日：1937-06-07
申请号：GB3389735
申请日：1935-12-06
申请人： REGINALD JOHN WILLIAM REYNOLDS , ERIC EVERARD WALKER , CLARENCE SYDNEY WOOLVIN , ICI LTD
IPC分类号： D06M13/322 , D06M13/46 , D06M13/463 , D06P1/66
摘要： Cellulosic material is treated with an aqueous solution of a quaternary ammonium salt of the general formula R--O--CH2--NR R R Hal, in which R is an aliphatic hydrocarbon radical of 12 or more carbon atoms, NR R R is a heterocyclic or aliphatic tertiary amine and Hal is a halogen atom, and the impregnated material preferably after previous drying is heated to a temperature such that the quaternary ammonium salt undergoes decomposition. The materials treated may be cotton, flax, jute, hemp, sisal, wood pulp, and other seed coat, bast, or other vegetable structural fibrous matter. They may be in the form of fibres, yarns, knitted or woven fabrics, paper, or cardboard. Mixed fabrics or yarns may be treated. Regenerated cellulose substance including fibres and films may also be treated. The treated materials have improved water-repellent or shower-proof properties stable to weather, laundering, dry-cleaning and other treatments. Treated yarns and fabrics have a soft feel. The process is applicable to dyed or undyed materials. When the process is carried out on materials dyed with direct-cotton dyes the latter become more permanently fixed. The quaternary ammonium salt may be a derivative of pyridine, picoline, quinoline, piperidine, tri-methyl, ethyl, or butyl-amine, triethanolamine or dialkylcyclohexylamine. It may contain a normal or branched paraffinoid, or ethylenoid aliphatic hydrocarbon radical. Wetting or buffering agents may be added to the dilute aqueous solution of the reagent. After the cellulosic material has been impregnated it may be dried at relatively low temperature and then heated or baked at a higher temperature preferably 90--120 DEG C. In an example, cotton fabric is padded with an aqueous solution of the ether of octadecyl alcohol and N-hydroxymethyl pyridinium chloride. It is squeezed and dried in warm air, baked at 90 DEG C., cooled and washed in benzene. Cotton-wool union fabric may similarly be treated. In other examples dyed calico is treated with an aqueous solution of octadecyl oxymethyl pyridinium chloride. Regenerated cellulose film made from viscose, and unsized paper are similarly treated. Sisal rope is immersed in a warm aqueous solution of the reagent, dried, and baked. Cotton sheeting is passed in a continuous padding operation through an aqueous solution of cetoxymethyl pyridinium chloride, squeezed, dried in warm air, baked at 160 DEG C., then washed with benzene. Dyed viscose taffeta is given two ends on a jig in a solution of oleyl oxymethyl pyridinium chloride, dried, then baked on drying cylinders at 120 DEG C., and washed with benzene. Other reagents specified are: the ether of sperm oil alcohols and hydroxy methyl pyridinium chloride; cetyl, do-decyl, or tetra-decyl oxymethyl pyridinium chloride or bromide; octadecyl, cetyl, and dodecyl-oxymethyl triethyl ammonium chlorides; octadecyl oxymethyl-quinolinium chloride and the corresponding salt made from the chloro-methyl ether and triethanolamine. These substances may be made, e.g. by the action of hydrogen chloride gas on a mixture of formaldehyde of 40 per cent strength and the corresponding long-chain alcohols followed by addition of pyridine, or by methods similar to those described in Specification 394,196. Specifications 390,553, 396,992, 426,482, and 434,911 also are referred to.

33. 发明专利

GB462254A Improvements in the manufacture of paper 未知
公开(公告)号：GB462254A
公开(公告)日：1937-03-04
申请号：GB2469935
申请日：1935-09-04
申请人： PERCY THOMAS GALE , FREDERICK HAMILTON , REGINALD JOHN WILLIAM REYNOLDS , ICI LTD
IPC分类号： D21H17/27
摘要： 462,254. Paper containing cellulose derivatives. GALE, P. T., HAMILTON, F., REYNOLDS, R. J. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 4, 1935, No. 24699. [Class 96] Paper, which may simulate parchment, is made from pulp to which has been added inorganic cellulose esters, e.g. the sulphate, phosphate, or nitrate insoluble in organic solvents and incompletely soluble in 5 per cent caustic soda under ordinary conditions, but dissolving therein by cooling, by colloid mill treatment, or by the action of dispersing agents &c. In an example, 400 lbs. of bleached sulphite pulp are beaten 1¢ hrs., 200 lbs. of cellulose sulphate, in solution, slowly added, and the pulp neutralized with sulphuric acid. Specifications 410,152, 410,153, and 420,529, [all in Group IV], are referred to.

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