Ceca S.a.

Elf Atochem S.a.

Nippon Shokubai Co., Ltd.

Bayeraktiengesellschaft

Daniel Bernard

Serge Petit

Stephane Fouquay

Henri-Jean Caupin

Martin Kugler

Franz Kunisch

Marcel Vos

Takashi Tomita

Tsunemasa Ueno

Mark Plehiers

Jean-Claude Braekman

Gabriele Ferrari

The invention relates to methods for preventing the attachment of aquatic organisms to surfaces that are submerged for extension periods of time in water. More particularly, this invention relates to the protection of submerged surfaces with alkylamine derivatives as antifouling agents. The invention is beneficiary for the environment in that it will permit the use of copper- and tin-free paints.

Alkylamine derivatives as antifouling agents

These amino group-containing mono- or dithiols are represented by formula (I). In order to prepare them, ethylene sulfide is reacted with at least one compound of formula (II), the average number of moles of ethylene sulfide added corresponding to the total m&plus;n, and possibly the compound of formula (I) as obtained is further reacted with ethylene sulfide in order to increase the value of m&plus;n.

Amino group-containing thiols and method for production thereof

A regimen for inducing/stimulating hair growth and/or retarding hair loss on an individual in need of such treatment comprises topically applying to the affected hair and/or scalp of such individual, a hair growth stimulating and/or hair loss retarding effective amount of at least one 2,3-dihydroxypropyl-2-(1-oxohydrocarbyl) amino-2-deoxyglucopyranoside having the structural formula: ##STR1## in which R is a linear or branched, saturated or unsaturated hydrocarbon radical having from 5 to 21 carbon atoms.

Deoxyglucopyranoside compounds for inducing/stimulating hair growth

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.

Fluoroalkviglycosiduronic acids and corresponding 6(3)-lactones,

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:

Phosphoric esters of alkyl or acyl dianhydro-1,4:3,6-D-glucitol,

The subject of the invention is the compounds of formula: ##STR1## in which R denotes a saturated or unsaturated, linear or branched alkyl group containing from 5 to 21 carbon atoms. The invention also relates to a process for the preparation of the abovementioned compounds, characterized in that it consists in

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Courbevoie, France

Daniel Bernard