Rohm and Haas Company

Robert E Rosen

Lori Ann Spangler

Damian Gerard Weaver

Jane W Cornille

John Joseph Maikner

Marlin Kenneth Kinzey

Karl Chaplin Deissler

Macroporous polymers having selected porosity and permeability characteristics that provide rigid polymer matrices suitable for use in medium and high pressure reversed phase liquid chromatography (RPC) are disclosed. A method for preparing the polymers using selected mixed porogens in selected proportions relative to the monomer phase is also disclosed. The polymers are especially useful as stationary phases in large scale chromatography columns without developing increased pressures during prolonged use, while maintaining good chromatographic performance for targeted biomolecules, such as insulin.

Polymeric adsorbents and method of preparation

This invention pertains to phosphosulfonates, having the general formula ##STR1## wherein Y is phenyl, naphthyl, benzyl, a (C.sub.5 -C.sub.8)cycloalkyl, a 5-membered heteroaromatic ring, a 6-membered heteraromatic ring, a fused 5,6-membered heteroaromatic ring, or a fused 6,6-membered heteroaromatic ring; and X is oxygen or sulfur; and R.sup.1 and R.sup.2 are each independently selected from substituted or unsubstituted alkyl, alkoxy, alkylthio, alkenyloxy, alkynyloxy, haloalkoxy, cyanoalkoxy, alkoxyalkoxy, cycloalkyloxy, cycloalkylalkoxy, alkylideneiminooxy, chloro, amino, phenyl or phenoxy; or R.sup.1 and R.sup.2 are both alkoxy, taken together with the phosphorus atom to form a 6-membered oxygen-containing ring; compositions containing these compounds and their use as herbicides.

Phosphosulfonate herbicides

This invention pertains to phosphosulfonates, having the general formula ##STR1## wherein Y is phenyl, naphthyl, benzyl, a (C.sub.5 -C.sub.8)cycloalkyl, a 5-membered heteroaromatic ring, a 6-membered heteraromatic ring, a fused 5,6-membered heteroaromatic ring, or a fused 6,6-membered heteroaromatic ring; and

Growing community of inventors

Melrose Park, PA, United States of America

Robert E Rosen