Patent GB-464283-A (GB)
Title: Improvements in the manufacture and production of dyestuff printing pastes
IPC: D06P1/52
Filed: 1935-10-11
Abstract: Printing.--Dyestuff printing pastes are thickened with water-soluble interpolymerization products of water-soluble vinyl ethers and water-insoluble vinyl ethers or other water-insoluble vinyl compounds.  Such interpolymerization products may be obtained by the process described in Specification 378,544.  The pastes yield uniform level prints, fast to washing and rubbing. Specified water-soluble vinyl ethers are vinyl methyl ether and the monovinyl ethers of mono-, di- or poly-ethylene or poly-propylene glycols or their derivatives, e.g. their esters or ethers.  Specified water-insoluble vinyl ethers are vinyl ethyl, vinyl propyl, vinyl isopropyl, vinyl butyl, vinyl isobutyl, vinyl octyl, vinyl decyl, vinyl dodecyl, vinyl tetradecyl, vinyl octodecyl, vinyl docosyl, vinyl oleyl, vinyl phenyl, vinyl cyclohexyl and vinyl hydroabietinyl ethers and the vinyl ethers of formaldehyde-glycerol and acetone-glycerol acetals. Other specified water-insoluble vinyl compounds are styrene, vinyl octodecyl sulphide, substituted aromatic vinylamines and vinylcarbazoles.  The following examples are specified: (1) a cotton fabric is printed with an aqueous paste containing Indanthrene blue RS and a product obtained by polymerizing vinyl methyl ether containing 2 per cent of vinyl octodecyl ether in presence of boron fluoride dihydrate in dioxane at -40 DEG  C. and the printed material is slop-padded with an aqueous solution containing sodium formaldehydesulphoxylate, potassium carbonate, sodium benzylaminobenzene-p-sulphonate and glycerol, steamed, rinsed and soaped at the boil; the polymerization product may be replaced by that from vinyl methylglycol ether containing 3 per cent of vinyl hydroabietinyl ether or from vinyl methyl ether containing 3 per cent of the vinyl ether of formaldehydeglycerol acetal; (2) a viscose artificial silk fabric is similarly printed with the use, as dyestuff, of Indanthrene orange RRT; (3) a viscose artificial silk fabric is printed with an aqueous paste containing Indanthrene brilliant green B, wheat starch and a product obtained by polymerizing vinyl methyl ether containing 5 per cent of vinyl octodecyl ether in presence of boron fluoride dihydrate in dioxane at -30 DEG  C., and is further treated as in (1); (4) a viscose artificial silk fabric is printed with an aqueous paste containing Indanthrene brilliant violet 4R, wheat starch and a polymerization product as in (1) and is further treated as in (1); (5) a viscose artificial silk fabric is similarly printed with the use, as polymerization product, of that obtained from vinyl methyl ether containing 10 per cent of vinyl octodecyl ether in presence of boron fluoride dihydrate in dioxane at -10 to -20 DEG  C. and is further treated as in (1); (6) a viscose artificial silk fabric is similarly printed with the use, as dyestuff, of Indanthrene blue RS and, as polymerization product, of that obtained from vinyl methyl ether containing 9,2 per cent of vinyl octodecyl ether in presence of boron fluoride dihydrate in dioxane at -10 DEG  C. and is further treated as in (1).