Patent GB-728701-A (GB)
Title: Stain filler combination for wood
Inventor: MAYERS JOHN W
IPC: C09D5/34
Filed: 1952-12-29
Abstract: A wood staining and filling composition comprises a compatible solution in an organic solvent or mixture of solvents of a resinous binder and an acid organic dyestuff, a pore filler containing a quantity of activated charcoal not exceeding 18 per cent by weight of the suspended solids, being suspended in the solution.  Pigments such as black, red and orange iron oxides, black toner and organic lakes may be included.  The resinous binder may be a synthetic resin such as phenol formaldehyde resin or glycol phthalate or other alkyd type resin.  The filler may be of the type commonly used in the paint and varnish industry, e.g. silex, barytes, expanded silica, asbestine, calcium carbonates, p  wood flour, starch or corn meal; these may be suspended with the aid of surface active agents such as alkyl or aryl sulphonic acid salts, morpholine, and salts of alkyl sulphates. Suitable acid organic dyestuffs are:-Buffalo Black NBR, Nigrosine, Fast Wool Yellow 3GL, Fast light Yellow, Fast Light Yellow D3GA, Metanil Yellow 1955, Calcocid Yellow MXXX Conc., Fast Light Orange 2G, Fast Light Orange GA Conc., Azo Rubine Ex. Conc. 133 per cent, Calcocid Milling Red 7B Conc., Chromolan Bordeaux R, and Croceine Scarlet MOO.  A preferred solvent is tetrahydro furfuryl alcohol; additional solvents include volatile alcohols, e.g. ether alcohols such as diethylene glycol monoethyl ether and ethylene glycol monoethyl ether, amino alkyl alcohols, e.g. methylamino propanol, alicyclic hydroxyl compounds such as cyclohexanol, and heterocyclic ring alcohols, such as furfuryl alcohol.  Compatible low-boiling diluents, such as methyl and ethyl alcohol, esters of aliphatic alcohols, ketones, and hydrocarbon distillates such as toluol, xylols, ethyl benzene and solvent naphtha, may be added; also plasticizers, e.g. tricresyl phosphate.  Exemplary compositions are given.  These are applied by spraying, brushing, dipping or other known means, partially dried, wiped, and then dried completely at a temperature within the range 100 DEG  F. to 200 DEG  F., preferably at about 120 DEG  F.ALSO:A wood staining and filling composition comprises a compatible solution in an organic solvent or mixture of solvents of a natural or synthetic resinous binder and an acid organic dyestuff, a pore filler containing a quantity of activated charcoal not exceeding 18 per cent. by weight of the suspended solids, being suspended in the solution.  Pigments such as black, red and orange iron oxides, black toner and organic lakes may be included.  The resinous binder may be a natural gum such as manila, or a synthetic resin such as phenol formaldehyde resin, or glycol phthalate or other alkyd type resin.  The filler may be of the type commonly used in the paint and varnish industry, e.g. silex, barytes, expanded silica, asbestine, calcium carbonate, wood flour, starch, or corn meal.  These may be suspended with the aid of surface-active agents such as alkyl or aryl sulphonic acid salts, morpholine and salts of alkyl sulphates.  Suitable acid organic dyestuffs are: Buffalo Black NBR, Nigrosine, Fast Wool Yellow 3GL, Fast Light Yellow, Fast Light Yellow D3GA, Metanil Yellow 1955, Calcocid Yellow MXXX Conc., Fast Light Orange 2G, Fast Light Orange GA Conc., Azo Rubine Ex. Conc. 133 per cent., Calcocid Milling Red 7B Conc., Chromolan Bordeaux R, and Croceine Scarlet MOO.  A preferred solvent is tetrahydro furfuryl alcohol; additional solvents include volatile alcohols, e.g. ether alcohols such as diethylene glycol monoethyl ether and ethylene glycol monoethyl ether, amino alkyl alcohols, e.g. methylamino propanol, alicyclic hydroxyl compounds such as cyclohexanol, and heterocyclic ring alcohols such as furfuryl alcohol.  Compatible low-boiling diluents, such as methyl and ethyl alcohol, esters of aliphatic alcohols, ketones, and hydrocarbon distillates such as toluol, xylols, ethyl benzene and solvent naphtha, may be added; also plasticizers, e.g. tricresyl phosphate. Exemplary compositions are given.  These are applied by spraying, brushing, dipping or other known means, partially dried, wiped and then dried completely at a temperature within the range of 100 DEG F. to 200 DEG  F., preferably at about 120 DEG  F.