Cpc International, Inc.

Morris J Danzig

Alan M Kinnersley

Mutong T Chiang

Ralph Milkovich

This invention relates to monoxanthates and dixanthates of dipropylene glycol and triethylene glycol. These xanthates increase both the rate of plant growth and the concentration of chlorophyll in the plants.

Method for regulating plant growth using xanthates

This invention relates to condensation polymers of thiolactic and thioglycolic acids. These polymers, as well as thiolactic acid, 2,2'-dithobisacetic acid, and 2,2'-dithiobispropanoic acid, increase both the rate of plant growth and the concentration of chlorophyll in the plant.

Method for regulating plant growth using sulfur-containing organic acids

The present invention relates to copolymerizable macromolecular monomers comprised of linear polymers or copolymers having one terminal moiety which contains two functional groups of substantially equivalent reactivity in participating in a condensation copolymerization reaction with difunctional condensible comonomers or prepolymers wherein the macromolecular monomers have substantially the same molecular weight. The present invention also relates to chemically joined, phase separated graft copolymers of the copolymerizable macromolecular monomers with at least two different condensible difunctional comonomers capable of reacting with each other and at least one of which is capable of reacting with the terminal moiety on the macromolecular monomers. Alternatively, the copolymerizable macromolecular monomers may be copolymerized with preformed polymeric segments which are the reaction products of at least two different condensible difunctional comonomers and which have a functional group on each end of the segments capable of reacting with the terminal moiety on the macromolecular monomers.

Difunctional terminated macromolecular monomers and condensation

The present invention relates to a novel composition of matter comprising: polymerizable 'tapered' (or 'graded') block macromolecular monomers, each of said polymerizable monomers comprising at least one polymeric segment having at least about 20 uninterrutped recurring monomeric units of at least one anionically polymerized mono-alkenyl-substituted aromatic hydrocarbon and a copolymerized segment of a mono-alkenyl-substituted aromatic hydrocarbon and a conjugated diene; each of said polymerizable monomers terminating with no more than one polymerizable end group containing a moiety selected from the group consisting of vinyl, vinylene, glycol, epoxy, or thioepoxy groups per mole of said polymerizable monomers, said polymerizable monomers denoted as preferably having a substantially uniform molecular weight distribution such that their ratio of Mw/Mn is less than about 1.1, where Mw is the weight average molecular weight of the polymerizable monomers and Mn is the number average molecular weight of the polymerizable monomers, said polymerizable monomers being further characterized as capable of copolymerizing with a second polymerizable compound having a relatively low molecular weight to yield a chemically joined, phase separated thermoplastic graft copolymer, said copolymerization occurring through said polymerizable end group, said polymerizable end group thereby occurring as an integral part of the backbone of said chemically joined, phase separated thermoplastic graft copolymer. Also disclosed are chemically joined, phase separated thermoplastic graft copolymers prepared from the polymerizable monomers.

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Skokie, IL, United States of America

Morris J Danzig