Abstract: Compounds suitable for being used as lubricants, having general formula:(I) RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L,or(II) R"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --CFX--L,whereR=--CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7X=F, --CF.sub.3R"=F, --CF.sub.3, --C.sub.2 F.sub.5m=an integer from 3 to 100n=a finite integer, or=zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 to 20 and R is preferably=CF.sub.3, if n=zero, R is preferably --C.sub.2 F.sub.5 or --C.sub.3 F.sub.7x=a finite integer, or=zeroy, z=finite integers, such that x+y+z ranges from 5 to 200, while (x+z)/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200 n while X is is preferably F, and R"=LL=group Y-Z,where:Y=--CH.sub.2 O--, --CH.sub.2 --OCH.sub.2, --CF.sub.2, --CF.sub.

Abstract: Process for protecting magnetic tapes, during their operation, from the friction and wear caused by the contact with accessories, either or not metallic, forming the cassette which contains said tapes, characterized in that said accessories are lubricated with a neutral perfluoropolyethereal fluid or with a perfluoropolyethereal fluid having functional groups at one or both ends of the polymeric chain.

Abstract: 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyfor, lHOCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 OCF(CF.sub.3)CH.sub.2 O[CH.sub.2 OCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 OCF(CF.sub.3)CH.sub.2 O].sub.n H,which is prepared by reacting the diol with formaldehyde in 80-90 percent sulfuric acid.

Abstract: Perfluorinated polyethers comprising copolymers of hexafluoroacetone and epoxide and/or oxetanes are described. The perfluorinated polyethers are useful as lubricants.

Abstract: Fatty alcohol oxyalkylates possessing blocked terminal groups are used as low-foam, antifoaming and biodegradable surfactants for industrial cleaning processes, in particular for bottle-washing and metal-cleaning.

Abstract: A process for the production of a mixed formal of polyglycol ethers having formulae selected from the group consisting of ##STR1## wherein R.sup.1 is a straight or branched chain alkyl having from 1 to 18 carbon atoms, and R.sup.2 is selected from the group consisting of hydrogen and straight or branched chain alkyl having from 1 to 17 carbon atoms, where the sum of the carbon atoms in R.sup.1 plus R.sup.2 is from 6 to 18, R.sup.3 is a member selected from the group consisting of monoalkylphenyl having from 14 to 26 carbon atoms, dialkylphenyl having from 14 to 26 carbon atoms, trialkylphenyl having from 14 to 26 carbon atoms, a straight or branched chain alkyl having from 8 to 22 carbon atoms, a straight or branched chain alkenyl having from 8 to 22 carbon atoms, and a radical having the formula ##STR2## wherein R.sup.1 and R.sup.2 have the above assigned values, and R.sup.

Abstract: Disclosed in this invention are copolymers containing about 0.5% to about 20%, by weight, of a C.sub.10 -C.sub.36 monoepoxide and about 99.5% to about 80%, by weight, of a 1,3 dioxolane. These copolymers are useful in increasing the viscosity of aqueous systems employed in various end uses, such as coatings and hydraulic fluids.

Abstract: Acetal-coupled non-ionic surfactants are easily degraded into relatively environmentally inoccuous fragments having little or no surface activity. The fragments are sufficiently low in molecular weight to be oxidized when exposed to water and atmospheric oxygen. The surface activity can also be destroyed by lowering the alkalinity of the medium in which the non-ionic surfactant is utilized to below pH 7. The non-ionic surfactants of the invention unexpectedly have very low viscosities as compared to surfactants containing a comparable molecular weight and oxyalkylene residue content.

Abstract: Oxyalkylene group of an alkylene oxide is inserted into a chain-type ether compound having at least one lower alkyl group by reacting the latter with the alkylene oxide in the presence of a catalyst prepared by mixing boron trifluoride and/or stannic chloride with an active-hydrogen compound exemplified by water or a lower aliphatic alcohol. The reaction results reduced formation of by-product dimer of the alkylene oxide even under an increased charging ratio of the alkylene oxide to the chain-type ether.

Abstract: Oligomeric formal diols are prepared by coupling segments of copolyether glycols with formaldehyde. The formal diols are useful in preparing polyurethanes.

Abstract: An alkaline washing composition comprised of strongly alkaline reacting inorganic salts, optionally wetting agents and a defoaming effective amount of at least one mixed formal of an alkylpolyglycol ether having the formula:R.sub.1 --O--(CH.sub.2 CH.sub.2 O).sub.m --CH.sub.2 --(OCH.sub.2 CH.sub.2).sub.n --O--R.sub.2wherein R.sub.1 is a straight or branched chain alkyl or alkenyl with from 8 to 22 carbon atoms, R.sub.2 is a straight or branched chain alkyl with from 1 to 5 carbon atoms, m is a number from 2 to 30 and n is a number from 1 to 3; as well as the improvement in the process of washing rigid solid articles comprising contacting the soiled rigid solid articles with a strongly alkaline washing solution containing a defoaming effective amount of a defoaming agent, rinsing said rigid solid articles and recovering cleaned rigid solid articles, the improvement consisting of using said mixed formal as said defoaming agent.

Abstract: Oligomeric formal diols are prepared by coupling segments of PTMEG, each having a molecular weight of 1000-3000, with formaldehyde. The formal diols are useful in preparing polyurethanes.

Abstract: A linked compound is a useful lubricant for fibers such as nylon and polyester, providing low volatility at a temperature below about 230.degree. C. and by oxidizing, leaving a low level of residue, at temperatures above about 230.degree. C.

Abstract: A fiber preparation containing or consisting of a polyglycol ether mixed formal of the formulaR.sub.1 --(OC.sub.2 H.sub.4).sub.n --OCH.sub.2 OCH.sub.2 CH.sub.2 OR.sub.2in which R.sub.1 is a linear or branched alkyl or alkenyl radical of from 8 to 22 carbon atoms, R.sub.2 is a linear alkyl radical of from 1 to 4 carbon atoms and n is an integer of from 3 to 30.

Abstract: Multi-block coupled polyoxyalkylene copolymer surfactants are prepared from individual blocks of polymers and copolymers of alkylene oxides by reacting these with bifunctional compounds to form polycarbonate esters and polyformals.

Abstract: Perfluoropolyether oils containing traces of H.sub.2 O molecularly dissolved therein are rendered anhydrous and hyperpure by treatment with chlorine trifluoride or monofluoride at a pressure of 1-5 atm. and a temperature of 0.degree.-50.degree. C. after which the treated oil is selectively fractionated.

Abstract: Copolyether glycols are prepared by copolymerizing alkylene oxides or cyclic acetals and tetrahydrofuran, using(1) a polymeric catalyst which contains sulfonic acid groups; and(2) a chain terminator which is water or an alkanediol.

Abstract: A surface active compound comprises a lipophilic alkyl group linked to a hydrophilic oxyethylated group through an acetal linkage so that, on acidification of an aqueous medium containing such a surface active compound, rupture of such acetal linkage permits separation of said lipophilic alkyl group, possibly with lipid material associated therewith, from the aqueous medium in which the oxyethylated groups remain so in turn permitting recovery of such lipophilic groups and any such lipid material, and effective elimination of active surface active compound from the aqueous phase.

Abstract: A process for preparing 1,4,4,5,5,6,6-heptafluoro-2-trifluoro-3-oxaheptan,7-diol polyformal by the following steps in order:(1) reacting 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol with formaldehyde in 80-90% (w/w) sulfuric acid in the presence of methylene chloride to produce 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyformal;(2) treating the reaction mixture with aqueous H.sub.2 O.sub.2 to destroy free formaldehyde;(3) removing methylene chloride from the reaction mixture;(4) extracting the product 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyformal from the reaction mixture with ether;(5) agitating the ether extract with an aqueous solution of (a) H.sub.2 O.sub.2, (b) KOH or NaOH, and (c) NaCl or KCl to convert hemiformal end groups into hydroxy end groups; and(6) isolating the product 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyformal.