Abstract:
The invention relates to compounds of formula: ##STR1## The invention also relates to a process for the preparation of the said compounds, which consists in: a) reacting dianhydro-1,4:3,6-D-glucitol with a compound of formula RCOOR' or RCH.sub.2 Y in the presence of a catalyst to form compounds of formula: ##STR2## in which: Y represents a halogen or an alkyl or arylsulfonic radical, R' represents a hydrogen atom or an alkyl radical having from 1 to 6 carbon atoms, R represents a saturated or unsaturated linear or branched alkyl radical containing from 5 to 21 carbon atoms, x represents CO or CH.sub.2 ; b) reacting the product of step a) with phosphorus oxychloride, a base and an anhydrous solvent, to form the compounds of formula (I) and/or (II), and optionally in separating them. The compounds which form the subject of the invention can be used in the field of surfactants, in particular for the preparation of cosmetic or hair compositions.
Abstract:
The invention relates to cleavable surfactants of formula: in which R′ and R, which may be identical or different, represent a hydrogen atom or a linear or branched, saturated or unsaturated alkyl radical, the sum of the carbon atoms of R′ and R being between 5 and 42. The invention also relates to the corresponding derivatives obtained by alkaline hydrolysis or amidation. The invention furthermore relates to the preparation of these surfactants from glucono-1(5)-lactone and a compound of formula R—CO—R′ in the presence of an acid catalyst, R and R′ having the meaning given above. The surfactants are used in particular in emulsion polymerization and in the field of cosmetics.
Abstract:
The invention relates to fluoroalkyl derivatives of uronic acids of the formula: ##STR1## and the corresponding lactones, as well as a process for the preparation of the said compounds, which comprises reacting a glycosiduronic acid or a glycosiduronolactone with an alcohol of formula R.sub.1 OH, which process may also include steps of basiciation and acidification. The compounds according to the invention may be used in particular as surfactants.
Abstract:
Preparing a polyurethane with polyurethane-polyether and polyurethane-polyester blocks with at least 2 polyurethane-polyester end blocks joined to an alkoxysilane end group, by reaction of a polyether polyol (A) with a stoichiometric excess of an aliphatic diisocyanate (B), then reaction of the polyurethane formed with a stoichiometric excess of a polyester polyol, then reaction of the polyurethane formed with a stoichiometric amount of an isocyanatosilane (D); polyurethane formed by said method; corresponding adhesive composition, further comprising a crosslinking catalyst method of assembly of 2 substrates employing the composition.
Abstract:
Compounds of the formula �P!(ACH.sub.2 NH.sub.2).sub.x in which P denotes a partially hydrogenated 1,3-diene oligomer residue, x is practically equal to 2 and A denotes a divalent residue such as ##STR1## are obtained by selective hydrogenation of compounds of formula �P.sub.1 !(ACN)x in which P.sub.1 denotes a 1,3-diene oligomer residue.
Abstract translation:其中P表示部分氢化的1,3-二烯烃低聚物残基的式[P](ACH 2 NH 2)x的化合物实际上等于2,A表示二价残基,例如 Z + Z,通过 选择性氢化式[P1](ACN)x化合物,其中P1表示1,3-二烯低聚物残基。
Abstract:
Aqueous-alcoholic solutions of coconut or palm oil alkylamidopropylbetaines with a betaine content of greater than 50%, which are fluid, stable and pumpable are described as occupying a well-defined zone of their betaine/water/ethanol ternary diagram. They are prepared by synthesis and quaternization of the amidoamine directly in the solvent medium in which they are defined.
Abstract:
The subject of the invention is dewetting or degreasing compositions based on halogenated aliphatic solvents containing in solution at least one mono- or dialkyl phosphate of a fluorinated amine, at least one quaternary ammonium mono- or dialkylphosphate and optionally a quaternary ammonium chloride.
Abstract:
The methylated tertiary amines are selectively prepared by reacting a primary or secondary amine, or a nitrile or aminonitrile, including an aminoalcohol, etheramine, a polyamine or fatty polyamine or amidoamine, or amidopolyamine or dinitrile, with hexamethylenetetramine ("HMTA"), under hydrogen pressure at a temperature no greater than about 160.degree. C. and in the presence of a catalytically effective amount of a hydrogenation catalyst, e.g., nickel deposited onto appropriate support substrate therefor.
Abstract:
The present invention relates to a liquid composition for the cold preparation of laminate composite materials so as to confer to them, without preliminary sanding or abrasion, a surface state favorable to adhesive bonding with polyurethane type adhesives comprising (a) at least one polar aprotic solvent (TPA); (b) at least one ether (TE) selected from ethers, ether-esters, and ether-ketones having: a molar volume less than 200 cm3/mole and preferably less than 160 cm3/mole, a molecule devoid of a hydroxyl function, and (c) at least one activator (TA) comprising at least one reactive nitrogenous function of the —NH2 and/or —NH— type of molar volume less than 100 cm3/mole.