Abstract: The present invention relates to new delivery systems for cyclopropene compounds of a cyclopropene compound generator comprising at least one substrate, a material containing at least one cyclopropene compound and a release agent whereby at least one side of one substrate is coated with the material containing at least one cyclopropene compound and wherein when the material containing at least one cyclopropene compound is exposed to the release agent, a gaseous cyclopropene compound is released. The present invention also provides methods to release a cyclopropene compound from such a generator to deliver a cyclopropene compound to plants, fruits, flowers or vegetables to inhibit an ethylene response in the plants, fruits, flowers or vegetable.

Abstract: A process to efficiently utilize the chain transfer agent hypophosphorous acid or salts in the preparation of low molecular weight polycarboxylate polymers comprising employing in process neutralization of the carboxylic acid monomers.A low molecular weight polycarboxylate polymer containing phosphinate and phosphonate functional groups where less than 20% of the phosphorus is present in inorganic non polymeric compounds.