PROCESS FOR TREATMENT OF PROTEINACEOUS MATERIALS

• Main Author: GIULIANA C. TESORO
• Format: Patent
• Language: English
• Published: 11.08.1970
• Subjects: CHEMISTRY; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; HETEROCYCLIC COMPOUNDS; LAUNDERING; METALLURGY; ORGANIC CHEMISTRY; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

A composition suitable for use in the treatment of wool comprises a polyfunctional aziridine compound having the formula <FORM:1109946/C3/1> in which R1, R2 and R3 are hydrogen or alkyl groups containing 1-4 carbon atoms, Q is an aromatic or alkyl substituted aromatic hydrocarbon group containing 6-18 carbon atoms, m is 2 or 3 and Z is the residue having a valency m remaining upon removing m hydrogen atoms from the hydroxyl radicals of an aliphatic or alicyclic polyol, and a coreactant which is a polybasic acid, e.g. succinic, adipic, sebacic, citric, tartaric or polyacrylic acid, or a polyamine, e.g. diethylene triamine, tetraethylene pentamine, hydroxyethyl ethylene diamine, a polyethylene imine, 1,3-diaminopropane or 1,6-diamino-hexane. The polyfunctional aziridine compound may be prepared by reacting an organic polyisocyanate with an organic compound containing at least two hydroxyl groups to produce an intermediate having at least two isocyanate groups which is then reacted with a 1,2-alkylene imine, the group Q derived from the polyisocyanate preferably being phenylene, tolylene, xylylene or biphenylene. Z may be the divalent radical-O(-CH2CH=CHCH2-)uO-in which u=6-100, <FORM:1109946/C3/2> in which n=2-6 and v=3-80, <FORM:1109946/C3/3> in which p=2-6, q=4 and r=2-35 or -(-OCaH2a-) x-O-L-O-(-CaH2aO-)y-in which a dihydric starting compound HO-L-OH, L being a divalent organic radical, e.g. derived from a glycol, 2,21-thiodiethanol or diethanolamine, has been condensed with x + y mole parts of one or more kinds of alkylene oxide CaH2aO, a being 1-4, the average molecular weight of Z being 500-5500. Alternatively, Z may be a trivalent radical derived from a compound having the formula <FORM:1109946/C3/4> after removal of 3 terminal hydrogen atoms a being 1-4 and x, y and z each being equal to 1-100 denoting mole parts of one or more kinds of alkylene oxide CaH2aO condensed with a trihydric starting compound (HO)3M, e.g. glycerol, 2-methyl-1,2,3-propane triol, butane triols, hexane triols, 2-alkyl-2-(hydroxymethyl)-1,3-propane diols, triethanolamine and 2-(dimethylamino) - 2 - (hydroxymethyl) - 1,3 -propane diol. ALSO: Wool is shrinkproofed and feltproofed and may be creaseproofed and be given a reduced tendency to pill by reacting it with a polyfunctional aziridine compound having the formula <FORM:1109946/D1-D2/1> in which R1, R2 and R3 are hydrogen or alkyl groups containing 1-4 carbon atoms, Q is an aromatic or alkyl substituted aromatic hydrocarbon group containing 6-18 carbon atoms, m is 2 or 3 and Z is the residue having a valence m remaining upon removal of m hydrogen atoms from the hydroxyl radicals of an aliphatic or alicyclic polyol. The compounds may be prepared by reacting an organic polyisocyanate with an organic compound containing at least two hydroxyl groups to produce an intermediate having at least two isocyanate groups which is then reacted with a 1, 2 alkylene imine, the group Q derived from the polyisocyanate preferably being phenylene, tolylene, xylylene or biphenylene. Z may be the divalent radical -O(-CH2 CH=CH CH2-)uO- in which u=6-100, -0 [(CH2)n <FORM:1109946/D1-D2/2> in which n=2-6 and <FORM:1109946/D1-D2/3> (CH2)n-O- in which p=2-6, q=4 and r=2-35 or -(-OCaH2a-)x-O-L-O-(-CaH2aO-)y-in which a dihydric starting compound HO-L-OH, L being a divalent organic radical, e.g. derived from a glycol, 2, 2\sv-thiodiethanol or a diethanol amine, has been condensed with x+y mole parts or one or more kinds or alkylene oxide CaH2aO, a being 1-4, the average molecular weight of Z being 500-5500. Alternatively Z may be a trivalent radical derived from a compound having the formula <FORM:1109946/D1-D2/4> after removal of the 3 terminal hydrogen atoms a being 1-4, and x, y and z each being equal to 1-100 denoting mole parts of one or more kinds of alkylene oxide CaH2aO condensed with a trihydric starting compound (HO)2M, e.g. glycerol, 2-methyl-1, 2, 3 propane triol, butanetriols, hexane triols, 2-alkyl-2-(hydroxy-methyl)-1, 3-propanediols, triethanolamine and 2 (dimethylamino)-2-(hydroxymethyl)-1, 3-propanediol. The compound may be applied to the wool dissolved or dispersed in water or an organic solvent, e.g. benzene, toluene, xylene, dimethyl formamide, petroleum fractions, carbon tetrachloride or perchloroethylene at a pH of 3-9 by spraying, padding, immersing, dipping or brushing, the wool squeezed or centrifuged to remove excess composition, dried at from ambient temperature to 325 DEG F and cured by leaving to stand at ambient temperature for several hours or by heating for a few minutes at 200 DEG -300 DEG F. The wool may be treated with a coreactant which is a polybasic acid, e.g. succinic, adipic, sebacic, citric, tartaric or polyacrylic acid, or a polyamine, e.g. diethylene triamine, tetraethylene pentamine, hydroxyethyl ethylene diamine, a polyethylene imine, 1, 3-diaminopropane or 1, 6-diamino-hexane, prior to, simultaneously with or after treatment with the polyaziridinyl compound. The treatment may be effected prior to or after dyeing. The treating composition may also contain a water and oil repellent which is a polyperfluoro-alkylacrylate. Fibres, threads, yarns, woven or knitted fabrics or garments comprising wool alone or inadmixture with cotton, viscose rayon, synthetic polyamide, polyester, polyolefin or acrylic fibres may be treated. The treated materials may be subjected to mechanical finishing operations, e.g. shearing, or semidecatised.