Patent GB-343949-A (GB)
Title: Improvements in the production or treatment of cellulosic or cellulose derivative materials or natural textile materials
IPC: D06M11/46
Filed: 1929-10-23
Abstract: For the incorporation of metallic radicles into natural textile materials or into artificial textile or other materials made of cellulose or its derivatives, substantially colourless or white metallic organic compounds are employed, a metallic organic compound being defined as (1) an organic compound in which a metal, other than an alkali metal, is linked directly to carbon or replaces hydrogen in an hydroxyl group, or (2) an ester of a metallic acid, i.e. an acid containing a metal in the acid radicle; the term does not include metal carboxylates or sulphonates.  The textile and other materials mentioned may be treated as such with the metallic organic compounds, the latter being dissolved in alcohols or hydrocarbons, for example, and applied to the materials at ordinary or raised temperature; materials made of cellulose esters or ethers are preferably treated under such conditions that the materials swell. Alternatively, the metallic organic compounds may be incorporated into the solutions used for making artificial filaments, films and other products from cellulose or its derivatives; to this end, the compounds may be dissolved or dispersed in the solutions, with the use of an additional solvent if desired, or they may be incorporated into the cellulose derivatives before making up the solutions.  The metallic organic compounds may be left in the materials or they may be decomposed therein to metals or metal hydroxides or other metal compounds.  The decomposition may be effected by treating the materials with a moist atmosphere or with steam, preferably moist, or by means of water or aqueous media, such as dilute acids or alkalies. For example, materials into which an organic compound of barium has been introduced may be treated with sulphuric acid.  When the metallic organic compounds are added to solutions of cellulose or its derivatives, as described above, decomposition of the compounds may be effected before, during, or after the working up of the solutions. For example, a benzene solution of tetraethyl titanate may be mixed with an aqueous acetone solution of cellulose acetate, or a solution of a metallic organic compound may be added to an acetylation mixture, the metallic compound being decomposed when the acetate is precipitated, or a solution of cellulose acetate in acetone containing tetraethyl titanate may be spun into an evaporative atmosphere containing water vapour or into an aqueous coagulating bath.  The processes described may be used to modify the lustre of the textile and other materials mentioned, or to mordant or weight them, or to increase their resistance, e.g. to ironing.  Reference is made to the treatment of materials made of or containing cellulose formate, acetate, propionate, or butyrate, or methyl, ethyl, or benzyl cellulose, or viscose, cuprammonium, or nitrocellulose artificial silk, or natural silk.  Specified metallic organic compounds are zinc diethyl, lead tetraethyl, zinc and aluminium ethylates, aluminium isopropylate, butylate, phenolate, and o-cresolate, and substantially colourless or white titanic acid esters; the titanic esters may be prepared by treating the corresponding sodium or potassium alcoholate or phenolate with titanium tetrachloride in the presence of alcohol while cooling. Reference is made also to the use of compounds of barium, calcium, strontium, magnesium, tin and lead.  According to the examples: (1) ethyl titanate pasted with acetone is added to an acetone solution of cellulose acetate; the solution may be dry-spun in the usual manner, and the titanic ester may be decomposed by heating the filaments in dilute hydrochloric acid, before or after collection; the titanic ester may also be decomposed during the spinning, as described above; the yarn may then be dyed directly with mordant dyes; (2) water is included in the spinning solution of example 1, so as to decompose the titanic ester prior to spinning; (3) cellulose acetate or natural silk yarn or fabric is heated with a benzene solution of ethyl titanate and then centrifuged and dried; the titanic ester may then be decomposed as described above.  The Provisional Specification describes the use of metallic organic compounds in general, and refers to the introduction of the metallic compounds for the purpose of colouring the materials.  It describes also the use of tetraphenyl and tetra-p-tolyl titanates.ALSO:For the incorporation of metals into natural textile materials or into artificial textile materials made of cellulose or its derivatives, substantially colourless or white metallic organic compounds are employed, a metallic organic compound being defined as (1) an organic compound in which a metal, other than an alkali metal, is linked directly to carbon or replaces hydrogen in an hydroxyl group, or (2) an ester of a metallic acid, i.e. an acid containing a metal in the acid radicle; the term does not include metal carboxylates or sulphonates.  The metallic organic compounds may be dissolved in alcohols or hydrocarbons and applied to the materials at ordinary or raised temperature; materials made of cellulose esters or ethers are preferably treated under such conditions that the materials swell.  The compounds may then be decomposed to metals.  Reference is made to the treatment of materials made of or containing cellulose formate, acetate, propionate, or butyrate, or methyl, ethyl, or benzyl cellulose, or viscose, cuprammonium, or nitrocellulose artificial silk or natural silk.  Specified metallic organic compounds are zinc diethyl, lead tetraethyl, zinc and aluminium ethylates, aluminium isopropylate, butylate, phenolate, and o-cresolate, and substantially colourless or white titanic acid esters.  The Provisional Specification describes the use of metallic organic compounds in general, and refers to the use of tetraphenyl and tetra-p-tolyl titanates.ALSO:For the manufacture of artificial textile or other materials made of cellulose derivatives and containing metallic radicles, substantially colourless or white metallic organic compounds are preliminarily incorporated into the cellulose derivatives.  A metallic organic compound is defined as (1) an organic compound in which a metal, other than an alkali metal, is linked directly to carbon or replaces hydrogen in an hydroxyl group, or (2) an ester of a metallic acid, i.e. an acid containing a metal in the acid radicle; the term does not include metal carboxylates or sulphonates.  The metallic organic compounds may be subsequently decomposed to metals or metal hydroxides or other metal compounds. The decomposition may be effected by treating the materials with a moist atmosphere or with steam, preferably moist, or by means of water or aqueous media, such as dilute acids or alkalies.  For example, materials into which an organic compound of barium has been introduced may be treated with sulphuric acid.  Reference is made to the manufacture of materials made of or containing cellulose formate, acetate, propionate, or butyrate, or methyl, ethyl, or benzyl cellulose.  Specified metallic organic compounds are zinc diethyl, lead tetraethyl, zinc and aluminium ethylates, aluminium isopropylate, butylate, phenolate, and o-cresolate, and substantially colourless or white titanic acid esters.  The Provisional Specification describes the use of metallic organic compounds in general, and refers to the use of tetraphenyl and tetra-p-tolyl titanates.