Shell Oil Comapny

Wilhelmus J Krijnen

Jan J Bleeker

Paulus Alexander Grotenhuis

Jacob B Roest

Gerhard D Van Wijngaarden

Madeline G Van Grieken

Martin Booth

Jacob Bloemheuvel

The invention provides a process for the preparation of a polysaccharide in oil dispersion which comprises the steps of

Process for the preparation of a polysaccharide in oil dispersion and

Oil-soluble reaction product of an oil-soluble basic alkaline earth metal salt of an organic acid, in particular of an aromatic carboxylic acid and a boron compound, in particular a boric acid. This product has superior detergent, anti-wear and anti-corrosion properties in engine oils.

Borated basic metal salt and lubricating oil composition

This invention deals with a process for the preparation of macrocyclic polyethers of the general formula: ##STR1## wherein x is 1-9; k is 0 or 1 and each R, which may be the same or different, represents a hydrogen atom or a lower alkyl or aryl group, or two R bonded to two adjacent carbon atoms form together with these carbon atoms a cyclic hydrocarbyl configuration, by reacting a compound of the general formula: ##STR2## with a sulphonyl halide in the presence of a base and a halogen-containing solvent, preferably chlorobenzene. The process is of special interest for the manufacture of 18-crown-6.

Manufacture of macrocyclic polyethers

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Amsterdam, Netherlands

Wilhelmus J Krijnen