Abstract:
Anionic oligomers of the general formula: ##STR1## in which T denotes the radical ##STR2## optionally in a mixture with the OH radical; u=0 or 1; p=1 or 2; M=H, Na, K, ammonium or a mono-, di- or tri-(alkyl or hydroxyalkyl)ammonium group, the alkyl part containing 1 to 4 carbon atoms; n=5-30; z=1-6; and R denotes an aliphatic, alicyclic, aryl, alkylaryl or aralkyl radical of valency z, which can contain 1 or more oxygen atoms, it being possible for the formula (I) to contain minor proportions of intermolecular or intra-molecular branches originating from a bis-epoxide.These oligomers are prepared by the addition of n mols of epihalogenohydrin, and optionally of a minor proportions of bis-epoxide, to 1 mol of compoundsR(OH).sub.z (II),in the presence of a Lewis acid, the polyhalogen compounds obtained then being converted into polythiocarboxylic compounds by reaction with a salt or an ester of thiloactic acid, thioglycolic acid or .alpha.-mercaptopropionic or .beta.-mercaptopropionic acid, and the resulting compounds, after saponification, if appropriate, being acidified and neutralized with NaOH, KOH, NH.sub.4 OH or an amine, and optionally oxidized or sulphoxidized.The compositions containing oligomers (I) are suitable for the treatment of keratin fibres, textiles and water.
Abstract translation:阴离子低聚物,其通式为:其中T表示基团,任选地与OH基团的混合物中; u = 0或1; p = 1或2; M = H,Na,K,铵或单 - ,二 - 或三 - (烷基或羟烷基)铵基团,烷基部分含有1至4个碳原子; n = 5-30; z = 1-6; 并且R表示价数z的脂族,脂环族,芳基,烷基芳基或芳烷基,其可以含有1个或更多个氧原子,式(I)可能含有少量的分子间或分子内分子, 双环氧化物。 通过在路易斯酸存在下,将1摩尔的表卤代醇和任选的少量双环氧化物加入1摩尔的化合物R(OH)z(II)中,得到的多卤素化合物制备这些低聚物 然后通过与硫代酸,巯基乙酸或α-巯基丙酸或β-巯基丙酸的盐或酯反应转化成多硫代羧酸化合物,并且所得化合物在皂化后,如果合适,被酸化并用NaOH,KOH, NH 4 OH或胺,并且任选被氧化或亚砜化。 含有低聚物(I)的组合物适用于治疗角蛋白纤维,纺织品和水。
Abstract:
Pentaerythritol co-esters derived from pentaerythritol, (3-alkyl-4-hydroxyphenyl)-alkanoic acids and alkylthioalkanoic acids or lower alkyl esters of such acids are useful as stabilizers of organic material normally susceptible to oxidative and/or thermal deterioration. The co-esters are advantageously prepared by transesterification of such esters with pentaerythritol. Preferred co-esters are (I) pentaerythritol tris[3,5-di-tert-butyl-4-hydroxyphenyl)propionate]-mono[3-n-dodecylthiopropionate] and (II) pentaerythritol bis[-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]-bis[3-n-dodecylthiopropionate]. The co-esters are especially useful in stabilizing applications for which physical mixtures of (i) (3-alkyl-4-hydroxyphenylalkanoic acid esters of polyols with (ii) polyalkanol esters of alkylthioalkanoic acids have heretofore been proposed.
Abstract:
Pentaerythritol co-esters derived from pentaerythritol, (3-alkyl-4-hydroxyphenyl)-alkanoic acids and alkylthioalkanoic acids or lower alkyl esters of such acids are useful as stabilizers of organic material normally susceptible to oxidative and/or thermal deterioration. The co-esters are advantageously prepared by transesterification of such esters with pentaerythritol. Preferred co-esters are (I) pentaerythritol tris[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]-mono[3-n-do-decylthiopropionate] and (II) pentaerythritol bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]-bis[3-n-dodecylthiopropionate]. The co-esters are especially useful in stabilizing applications for which physical mixtures of (i) (3-alkyl-4-hydroxyphenyl)alkanoic acid esters of polyols with (ii) polyalkanol esters of alkylthioalkanoic acids have heretofore been proposed.
Abstract:
Described are the esters of alkylthioalkanoic acids defined according to the structure: ##STR1## wherein R.sub.1 represents C.sub.3 -C.sub.6 alkenyl or C.sub.1 -C.sub.4 alkyl; R.sub.2 represents C.sub.3 alkyl; C.sub.3 hydroxyalkyl or C.sub.3 alkenyl; N represents 0, 1 or 2 amd M represents 0 or 1 and uses thereof in augmenting or enhancing the aroma or taste of foodstuffs.
Abstract:
Pentaerythritol co-esters derived from pentaerythritol, (3-alkyl-4-hydroxyphenyl)-alkanoic acids and alkylthioalkanoic acids or lower alkyl esters of such acids are useful as stabilizers of organic material normally susceptible to oxidative and/or thermal deterioration. The co-esters are advantageously prepared by transesterification of such esters with pentaerythritol. Preferred co-esters are (I) pentaerythritol tris[3-(3,5-di-tert-butyl-4-hydroxylphenyl)propionate]-mono[3-n-dodecylthiopropionate] and (II) pentaerythritol bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]-bis[3-n-dodecylthiopropionate]. The co-esters are especially useful in stabilizing applications for which physical mixtures of (i) (3-alkyl-4-hydroxyphenyl)alkanoic acid esters of polyols with (ii) polyalkanol esters of alkylthioalkanoic acids have heretofore been proposed.
Abstract:
Novel asymmetric thioethers of the formula ##STR1## in which R.sup.1 represents a C.sub.1-3 -alkyl radical or a C.sub.1-3 -hydroxyalkyl radical of which the hydroxy group may be in esterified form,R.sup.2 represents an optionally unsaturated aliphatic radical having from 5 to 15 carbon atoms,R.sup.3 represents hydroxy, alkoxy or an optionally substituted amino group, and-X- represents a single bond, a methylene group or an optionally N-acylated primary aminomethylene groupwherein the O-atom of the hydroxy group is in the transconfiguration relative to the S-atom, are effective as leucotriene-antagonists since they eliminate the contractions of smooth muscles caused by leucotrienes and are therefore suitable for the treatment of allergic, especially asthmatic, conditions.
Abstract:
The present invention provides carboxylic acid derivatives of the general formula: ##STR1## wherein R is a hydrogen atom, alkyl, a metal cation or an ammonium or alkylammonium ion, R.sub.1 is a hydrogen atom, a hydroxyl group or an alkyl, O-alkyl,O-benzyl or O-acyl radical, R.sub.2 is a hydrogen atom or an alkyl, aryl or aralkyl radical, n is 0, 1 or 2 and R.sub.3 is an acyl radical, this radical being(a) a straight-chained or branched, saturated or unsaturated alkanoyl radical containing 2 to 11 carbon atoms; or(b) the radical ##STR2## in which A is a straight-chained or branched, saturated or unsaturated aliphatic hydrocarbon radical containing up to 4 carbon atoms, which is optionally substituted by hydroxyl, and B is a straight-chained or branched, saturated or unsaturated aliphatic hydrocarbon radical containing up to 8 carbon atoms, which is optionally substituted one or more times by hydroxyl, carboxyl or phenyl, or B is a phenyl or cycloalkyl radical; or(c) the radical ##STR3## in which A and B have the same meanings as in (b) and R.sub.4 is a hydrogen atom or an alkyl or aralkyl radical; as well as the pharmacologically acceptable salts thereof.The present invention also provides processes for the preparation of these compounds, as well as pharmaceutical compositions containing them.
Abstract:
Perfluorinated surface-active block or random oligomers of the formula ##STR1## where R denotes a C.sub.2 -C.sub.18 -hydrocarbon or -hydrofluorocarbon radical,Y denotes a C.sub.6 -C.sub.13 -fluorocarbon or -hydrofluorocarbon radical which can contain a chain oxygen atom,Z denotes a group which confers solubility in water andp and q denote integers or decimal numbers from 0.5 to 30are provided. They are suitable for use in cosmetic compositions for the treatment of hair. They slow down the flow of sebum and the rate at which hair becomes greasy again.
Abstract:
A method for sulfating a hydroxy amino acid or a residue of such an amino acid in a peptide by reaction with a reagent which is a tertiaryammonium salt of acetylsulfuric acid having the formula:[CH.sub.3 COOSO.sub.3 ].sup.- [R].sup.+wherein R is triethylamine, ethyldiisopropylamine, pyridine, 4-methylmorpholine or 4-N,N-dimethylaminopyridine. The .alpha.-amino group and any other labile side chains present may be protected or may be left unprotected at the time the sulfation takes place.
Abstract:
Various mercaptoalkanoic acids are recovered from an aqueous medium or water in which they are contained by a liquid-liquid solvent extraction operation employing at least one of an alkanoic acid ester and an alkylene glycol ether. In one embodiment, thioglycolic acid has been extracted with ethyl acetate. In another embodiment, it has been recovered with ethylene glycol monoethyl ether acetate. In a further embodiment, it has been recovered with diethylene glycol diethyl ether.