摘要:
Hydrolytic enzymes capable of catalyzing amidation reactions can be used to produce cyclic amide oligomers from diesters and diamines. The cyclic amide oligomers are useful for the production of higher molecular weight polyamides.
摘要:
Hydrolytic enzymes capable of catalyzing amidation reactions can be used to produce cyclic amide oligomers from diesters and diamines. The cyclic amide oligomers are useful for the production of higher molecular weight polyamides.
摘要:
Disclosed is an insecticidal composition comprising by weight based on the total weight of the composition: a) from about 9 to about 91% of one or more anthranilic diamide insecticides; and (b) from about 9 to about 91% of a cyclodextrin; wherein the ratio of component (b) to component (a) is about 1:10 to about 10:1 by weight. Also disclosed are inclusion complexes of the anthranilic diamide insecticides with the cyclodextrin.Also disclosed is a geotropic propagule coated with an insecticidally effective amount of the aforedescribed composition. Further disclosed is a liquid composition comprising the insecticidal composition, and a method for protecting a geotropic propagule and plant derived therefrom from a phytophagous insect pest.
摘要:
This invention relates to the preparation of polyamide block copolymers by sequential monomer addition. More particularly, it relates to catalysts capable of copolymerizing not only cyclic amides, but other monomers such as cyclic esters and epoxides as well, using sequential addition so as to produce useful and novel block copolymers.
摘要:
N-heterocyclic carbenes are effective catalysts for the ring opening polymerization of cyclic amides. The catalysts provide rapid polymerization, high monomer conversion, high molecular weight, and a mechanically sound material.
摘要:
A polymeric, phosphorus-containing composition made by heating, in the presence of an initiator, preferably a free radical initiator, and optionally in the presence of one or more comonomers, at least one substituted phosphonylated 2,2′-dihydroxyl-1,1′-binaphthalene or at least one substituted 2,2′-dihydroxyl-1,1′-biphenylene.
摘要:
Multidentate phosphite ligands are disclosed for use in reactions such as hydrocyanation and isomerization. The catalyst compositions made therefrom and the various catalytic processes which employ such multidentate phosphite ligands are also disclosed. In particular, the ligands have heteroatom-containing substituents on the carbon attached to the ortho position of the terminal phenol group.
摘要:
The invention relates to a process for the making organic aldehyde compounds from an unsaturated compound by hydroformylation and in the presence of a catalyst system comprising a Group VIII metal and a bidentate phosphorus ligand having two trivalent phosphorus atoms bound to salicylanilide groups.
摘要:
A polymeric, phosphorus-containing composition made by heating, in the presence of an initiator, preferably a free radical initiator, and optionally in the presence of one or more comonomers, at least one substituted phosphonylated 2,2′-dihydroxyl-1,1′-binaphthalene or at least one substituted 2,2′-dihydroxyl-1,1′-biphenylene.
摘要:
A process for hydroformylatiog acyclic monoethylenically unsaturated compounds to corresponding terminal aldehydes using a Group VIII transition metal and selected multidentate phosphite ligands.