摘要:
The present invention provides protected functionalized polymerization initiators having less than one molar equivalent chain extension agent introduced therein to provide hydrocarbon solubility.
摘要:
Hetero-telechelic polymers having the formula: FG—(Q)d—Z—J—[A(R1R2R3)]x (I) wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hydrocarbons, alkenylsubstituted aromatic hydrocarbons, and mixtures thereof; d is an integer from 10 to 200; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; J is oxygen, sulfur, or nitrogen; [A(R1R2R3)]x is a protecting group, wherein A is an element selected from Group IVa of the Periodic Table of Elements; R1, R2, and R3 are each independently selected from the group consisting of hydrogen, alkyl, substituted alkyl groups containing lower alkyl, lower alkylthio, and lower dialkylamino groups, aryl or substituted aryl groups containing lower alkyl, lower alkylthio, and lower dialkylamino groups, and cycloalkyl and substituted cycloalkyl containing 5 to 12 carbon atoms; and x is dependent on the valence of J and varies from one when J is oxygen or sulfur to two when J is nitrogen, with the proviso J and FG are not the same, and processes for making the same.
摘要翻译:具有下式的异烟酰基聚合物:其中FG是被保护或未被保护的官能团; Q是通过引入选自共轭二烯烃,烯基取代的芳族烃及其混合物的化合物衍生的饱和或不饱和烃基; d为10〜200的整数; Z是含有3-25个碳原子的支链或直链烃基,任选含有芳基或取代的芳基; J是氧,硫或氮; [A(R 1 R 2 R 3)] x是保护基,其中A是选自元素周期表Ⅳa族的元素; R 1,R 2和R 3各自独立地选自氢,烷基,含有低级烷基,低级烷硫基和低级二烷基氨基的取代烷基,含低级烷基的低级烷基 烷基,低级烷硫基和低级二烷基氨基,环烷基和取代环烷基,含有5至12个碳原子; 并且x取决于J的化合价,并且当J是氮时,当J是氧或硫时,J的值是不同的,条件是J和FG不相同,并且其制备方法。
摘要:
This invention relates to aryloxy dihydrobenzofuran, oxoindole or benzofuranone derivatives having herbicidal activity and to the use of such compounds to control the growth of noxious plants, i.e., weeds.
摘要:
Imidazolidinone imines are provided as well as a process for preparing same including corresponding imidazolidinone amines which compounds are useful as herbicides.
摘要:
A process for quickly preparing easily separable solutions of lithium tertiary-alkoxides. Comprising the steps of reacting lithium metal in bulk solid form, containing less than 0.1% by weight of sodium, with a tertiary alcohol in mole ratios of metal to alcohol ranging from 2 to 1 to 10 to 1 in a solvent selected from ethereal or hydrocarbon solvents under an inert atmosphere at elevated temperature for 1 to 10 hours, cooling the product and separating the product solution from the unreacted lithium metal in the reactor, and optionally adding solvent and sufficient lithium metal and alcohol to said unreacted metal in said reactor to maintain said mole ratio of lithium metal to alcohol, and continuing the reaction, thereby to form further lithium tert-alkoxide, and repeating said steps a number of times.
摘要:
A process for producing nornally liquid hydrocarbon solutions of lithium dialkylamides and lithium alkylenecycloimides, essentially free of ethers and by-product gaseous alkanes derived from C1-C4 alkyllithium compounds, comprising reacting lithium metal with a C.sub.5 to C.sub.12 secondary amine and an electron carrier compound containing at least five carbon atoms in a normally liquid hydrocarbon solvent.
摘要:
A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M--Z--O--C(R.sup.1 R.sup.2 R.sup.3) wherein M is an alkali metal; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; and R.sup.1, R.sup.2, and R.sup.3 are independently selected from hydrogen, alkyl, substituted alkyl, aryl or substituted aryl groups, and their employment as initiators in the anionic polymerization of olefin containing monomers in an inert, hydrocarbon solvent comprising reacting an omega-protected-1-haloalkyl with lithium metal dispersion having a particle size between 10 and 300 millimicrons in size, at a temperature between 35.degree. and 130.degree. C. in an alkane solvent containing 5 to 10 carbon atoms.
摘要翻译:一种制备以下一般结构的单官能醚引发剂的烃溶液的方法:M-Z-O-C(R 1 R 2 R 3)其中M为碱金属; Z是含有3-25个碳原子的支链或直链烃基,任选含有芳基或取代的芳基; 并且R 1,R 2和R 3独立地选自氢,烷基,取代的烷基,芳基或取代的芳基,并且它们用作惰性烃溶剂中含烯烃单体的阴离子聚合中的引发剂,包括使ω-保护的 - 在具有5至10个碳原子的烷烃溶剂中,在35至130℃之间的温度下,具有尺寸在10-300毫微米之间的锂金属分散体的1-卤代烷基。
摘要:
A process for preparing high purity solutions of highly substituted lithium amide bases by direct reaction of lithium metal with highly substituted amine bases alone or in an ether solvent, a hydrocarbon solvent or in a mixed ether/hydrocarbon solvent mixture, optionally in the presence of a catalyst selected from tin salts and transition metal salts of Groups 4B, 5B, 6B, 7B, and 8 of the Periodic Table.
摘要:
A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure:M--Z--O--C(R.sup.1 R.sup.2 R.sup.3)wherein M is an alkali metal; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; and R.sup.1, R.sup.2, and R.sup.3 are independently selected from hydrogen, alkyl, substituted alkyl, aryl or substituted aryl groups, and their employment as initiators in the anionic polymerization of olefin containing monomers in an inert, hydrocarbon solvent comprising reacting an omega-protected-1-haloalkyl with lithium metal dispersion having a particle size between 10 and 300 millimicrons in size, at a temperature between 35.degree. and 130.degree. C. in an alkane solvent containing 5 to 10 carbon atoms.
摘要翻译:一种制备以下一般结构的单官能醚引发剂的烃溶液的方法:M-Z-O-C(R 1 R 2 R 3)其中M为碱金属; Z是含有3-25个碳原子的支链或直链烃基,任选含有芳基或取代的芳基; 并且R 1,R 2和R 3独立地选自氢,烷基,取代的烷基,芳基或取代的芳基,并且它们用作惰性烃溶剂中含烯烃单体的阴离子聚合中的引发剂,包括使ω-保护的 - 在具有5至10个碳原子的烷烃溶剂中,在35至130℃之间的温度下,具有粒径在10-300毫微米之间的锂金属分散体。
摘要:
A process for producing clear, colorless solutions of branched lithium alkoxides containing 3 to 12 carbon atoms, in a polar reaction solvent, comprising reacting a dispersion of lithium metal having a particle size less than 300 microns with a minimum of 5 mole percent excess over stoichiometric of a branched alkyl alcohol containing 4 to 12 carbon atoms, in a polar reaction solvent as the reaction medium, at a temperature between 50.degree. C. and the boiling point of the solvent in an inert atmosphere.