摘要:
Hetero-telechelic polymers having the formula:FG--(Q).sub.d --Z--J--[A(R.sup.1 R.sup.2 R.sup.3)].sub.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(R.sup.1 R.sup.2 R.sup.3)].sub.x is a protecting group, wherein A is an element selected from Group IVa of the Periodic Table of Elements; R.sup.1, R.sup.2, and R.sup.3 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:具有式FG-(Q)d-Z-J- [A(R 1 R 2 R 3)] x(I)的异烟酰基聚合物,其中FG是受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(R1R2R3)] x为保护基,其中A为选自元素周期表第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,含有低级烷基,低级烷硫基和低级二烷基氨基的芳基或取代芳基 和含有5至12个碳原子的环烷基和取代的环烷基; 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:
A process for removing a protecting group from a polymer. Protected functional groups of a polymer may be deprotected by treating the polymer in the presence of an acid catalyst, including organic acids, mineral acids, heterogeneous acid systems, Lewis acids, and fluoride ion sources.
摘要:
Protected functional initiators have been demonstrated to polymerize dienes and alkenyl substituted aromatics. The resultant living anions were linked with a coupling agent, such as divinylbenzene or tin tetrachloride, to afford a protected functionalized star polymer. Subsequent deprotection afforded a star polymer, with functional groups on the end of each arm of the star. The star polymer could be hydrogenated before or after removal of the protecting groups. The newly liberated functional groups can participate in further polymerization chemistry.
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 groups containing lower alkoxy, lower alkylthio, and lower dialkylamino groups, aryl or substituted aryl groups containing lower alkoxy, lower alkylthio, and lower dialkylamino 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,含有低级烷氧基,低级烷硫基和低级二烷基氨基的取代烷基,含有低级烷氧基,低级烷硫基和低级二烷基氨基的芳基或取代芳基, 作为在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1-卤代烷基与尺寸为10-300毫微米的锂金属分散体在35℃和130℃之间的温度下反应 在含有5至10个碳原子的烷烃溶剂中。
摘要:
This invention concerns novel, unsymmetrically protected, telechelically functionalized linear and star or multi-arm polymers, their optionally hydrogenated analogues, the polymers produced by selective removal of the protecting groups, the segmented block polymers produced by further reaction of these selectively deprotected polymers with selected comonomers, and the processes to prepare these polymers.
摘要:
A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M--Q.sub.n --Z--OA(R.sup.1 R.sup.2 R.sup.3) wherein M is defined as an alkali metal, selected from the group consisting of lithium, sodium and potassium, Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hydrocarbons and alkenylsubstituted aromatic hydrocarbons; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; A is an element selected from carbon and silicon; R.sup.1, R.sup.2, and R.sup.3 are independently selected from 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 n is an integer from 1 to 5, monofunctional ethers produced by the process, use of the initiators in a polymerization process and polymers produced by the polymerization process.
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-Qn-Z-OA(R1R2R3)其中M定义为碱金属,选自锂,钠和钾,Q 是通过引入选自共轭二烯烃和烯基取代的芳族烃的化合物衍生的饱和或不饱和烃基; 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; A是选自碳和硅的元素; R 1,R 2和R 3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,含有低级烷基,低级烷硫基和低级二烷基氨基的芳基或取代芳基,n是 1至5的整数,通过该方法产生的单官能醚,在聚合方法中使用引发剂和通过聚合方法制备的聚合物。
摘要:
A process for preparing easily separable solutions of organolithium compounds comprising the steps of reacting lithium metal, in the form of cast or extruded ingots or pieces cut therefrom, with an organo halide in mole ratios ranging from 3:1 to 20:1 in a solvent selected form a group of liquid hydrocarbons, alkyl ethers, and mixtures thereof under an inert atmosphere for one to ten hours with moderate stirring, cooling the resulting product, and separating the solution of the organolithium compound from the reacted lithium metal and by-product lithium chloride in the reactor.
摘要:
A process for the preparation of lithium amide comprising essentially forming lithium bronze by introducing at least 1 equivalent of anhydrous ammonia over a 1 to 5 hour period into a dispersion containing one equivalent of lithium in a liquid hydrocarbon solvent at a temperature of up to 40.degree. C., then after the lithium bronze is formed, heating the reaction mixture to 50.degree. to 80.degree. C. for 2 to four hours to decompose the lithium bronze and form a suspension of lithium amide in the solvent from which suspension the lithium amide is recovered.
摘要:
The invention relates to certain 3-isoxazolyl-2-imidazolidinone derivatives, namely 3-[5- or 3-substituted-3- or -5-isoxazolyl]-1-substituted-4- or 5-substituted amino-2-imidazolidinones and the use thereof for preemergence or postemergence control of noxious plants, i.e., weeds.
摘要:
This invention relates to aryloxy optionally oxo-substituted indane or tetralin derivatives having herbicidal activity and to the use of such compounds to control the growth of noxious plants, i.e., weeds.