Abstract: A homogenizer, with which the homogenization power is minimized while maintaining good homogenization, and with which at the same time the conveying power of the homogenizer is increased. This is achieved via a constant free cross-sectional area within the individual homogenizing stages, and by a hydrodynamically favorable design of the free space which surrounds the tools of the homogenizer. Baffle elements or a subsequently connected second pump stage can be provided.

Abstract: Compounds are described of the formula ##STR1## in which R.sup.1 is unsubstituted or substituted phenylalkyl, thienylalkyl or naphthylalkyl, or cinnamyl;R.sup.2 is a hydrogen atom, methyl or alkyl substituted by alkoxy or --COOH;W is alkylene;X is cis or trans --CH.dbd.CH-- or --CH.sub.2 CH.sub.2 --; andY is a saturated heterocyclic amino group having 5-8 ring members;and their salts and solvates.These compounds inhibit blood platelet aggregation and bronchoconstriction and may be formulated for use as antithrombotic and anti-asthmatic agents.