Abstract: Process for removing color-formers from polymeric sulfonated phenol-formaldehyde condensation products so as provide condensation products having reduced tendencies to turn yellow and which provide stain-resistance to polyamide textile substrates which comprises dissolving a polymeric sulfonated phenolformaldehyde condensation product in a aqueous base, acidifying the resulting aqueous solution so as to form a slurry, heating the slurry so as to form a two-phase system comprising an aqueous solution and a water-soluble taffy-like material, separating the aqueous solution and the water-insoluble material from one another, and dissolving the wate-insoluble material in an aqueous base.

Abstract: Textile treatment compositions are disclosed, comprising polymers of perfluoroalkyl (meth)acrylate and other monomers such as 2-chlorohydroxypropyl methacrylate or other alkyl (meth)acrylates; propylene glycol monomethyl ether; and trichlorotrifluoroethane.

Abstract: Water-soluble N,N-bis-(2-hydroxyethyl)glycine/metal chelates represented by the formula: ##STR1## wherein R is H or alkyl (1-12C); M is Ti or Zr; k is a number in the range between 0 and 1, p is a number in the range between 1 and 2, and k+p=2 (in particular embodiments: k=1 and p=1; k=0 and p=2; and k=0.5 and p=1.5). The chelates can be used as crosslinking agents in hydraulic fracturing fluids and in gels that are used for selectively plugging permeable zones in subterranean formations or for plugging subterranean leaks.

Abstract: A water-soluble zirconium chelate formed from a tetraalkyl zirconate and hydroxyethyl-tris-(hydroxypropyl) ethylene diamine, and use of the chelate as cross-linking agents in hydraulic fracturing fluids and in gels that are used for selectively plugging permeable zones in subterranean formations or for plugging subterranean leaks.

Abstract: Oil- and water-repellent solid fluoropolymers are disclosed, comprising by weight:(a) 40-75% polymer chain units derived from a mixture of perfluoroalkylethylacrylate monomers of formulaCF.sub.3 CF.sub.2 (CF.sub.2).sub.k C.sub.2 H.sub.4 OC(O)CH.dbd.CH.sub.2,the monomer mixture consisting essentially of:(1) 0-10% monomer wherein k is 4 or less;(2) 45-75% monomer wherein k is 6;(3) 20-40% monomer wherein k is 8;(4) 1-20% monomer wherein k is 10; and(5) 0-5% monomer wherein k is 12;(b) 10-35% polymer chain units derived from vinylidene chloride; and(c) 10-25% polymer chain units derived from an alkyl acrylate or alkyl methacrylate having an alkyl chain length of 2-18 carbons.

Abstract: Novel t-aliphatic .alpha.-(sulfo) azo compounds: ##EQU1## and the use of compounds I as polymerization initiators for vinyl monomers and as curing agents for resins. For example, 2-t-butylazo-2-thiophenoxy-4-methylpentane, prepared by reacting a solution of thiophenol and sodium hydroxide in methanol with 2-t-butylazo-2-chloro-4-methylpentane at 10.degree. - 15.degree.C., is used to cure an unsaturated polyester-styrene resin at 115.degree.C. and to polymerize styrene at 115.degree.C.

Abstract: Novel symmetrical bis(unsymmetrical t-alkyl and t-aralkyl azo) compounds of the general formula I:r -- n = n -- r.sub.12 -- n = n -- r' (i)where R = R' = (R").sub.3 C--, e.g., 1,2-ethylene bis(4-t-butylazo-4-cyanovalerate); and the use of I for sequential generation of free radicals, e.g. styrene monomer and 1,2-ethylene bis(4-t-butylazo-4-cyanovalerate) are reacted to obtain polystyrene containing attached azo groups which in turn is reacted with methyl methacrylate monomer to obtain a block copolymer of polystyrene and poly(methyl methacrylate).

Abstract: A process for making N-monochloro or bromo monosubstituted urea where a urea RNH--CO--NH.sub.2 is suspended in liquid water at 0.degree.C-60.degree.C and reacted with free chlorine or free bromine, at least 2 g. atoms per mole of urea, preferably in the presence of an acid acceptor such as zinc oxide; R may be alkyl having 3 carbon atoms, cycloalkyl, aralkyl, alkoxycarbonyl, aryloxycarbonyl or acyl.New compounds of the formula R.sub.d --NX--CO--NX'H where X and X' are different and are (1) chloro or bromo and (2) hydrogen and R.sub.d is alkyl or cycloalkyl, 3-15 carbon atoms, or R.sub.1 C(O)--, where R.sub.1 is aliphatic, cycloaliphatic, aryl, alkoxy or aryloxy, each of not more than 10 carbon atoms and when X is H, X' is Cl or Br and R.sub.d is alkyl or cycloalkyl and when X is Cl or Br, X' is H and R.sub.d is R.sub.1 C(O)--.

Abstract: Novel symmetrical bis(unsymmetrical t-alkyl and t-aralykl azo) compounds of the general formula I:R -- N = N -- R.sub.12 -- N = N -- R' (I)wherein R = R' = (R").sub.3 C--, e.g., 1,2-ethylene bis(4-t-butylazo-4-cyanovalerate); and the use of I for sequential generation of free radicals, e.g. styrene monomer and 1,2-ethylene bis(4-t-butylazo-4-cyanovalerate) are reacted to obtain polystyrene containing attached azo groups which in turn is reacted with methyl methacrylate monomer to obtain a block copolymer of polystyrene and poly(methyl methacrylate).