Abstract: The invention relates to a process for quantitatively purifying glycolipids, wherein the purification of the glycolipids is effected by acidifying the glycolipid-containing solution to pH .ltoreq.5.0, then heating the batch to 60.degree. C.-130.degree. C., and then cooling the batch down to .ltoreq.50.degree. C. and centrifuging it at .gtoreq.500 g in order to sediment the glycolipid-containing phase.

Abstract: The invention relates to a method for the preparation of rhamnose from rhamnolipids, for which an acidic emulsion of the rhamnolipid is hydrolyzed at 100.degree. to 200.degree. and subsequently cooled, the aqueous phase of the resulting hydrolysate is separated from the lipid phase, its pH is raised by the addition of a basic compound, any precipitate formed is removed, the remaining solution is concentrated and either processed further directly or chromatographed on ion exchange resin, rhamnose-containing fractions being obtained as eluate, which are processed further as such or worked up into crystalline rhamnose monohydrate.

Abstract: Process for preparing purified glycolipids by membrane separation processes. Glycolipids may be purified and concentrated using a membrane separation process at acid pH and employing a membrane with a cut-off size of 30,000.

Abstract: The invention provides finely grained, expandable particles of a styrene homopolymer or copolymer which contain an expanding agent and a flameproofing organic halogen compound as well as, in addition a 2,4-diamino-1,3,5-triazine derivative.