SU1628841A3 - Гербицидна композици - Google Patents

Гербицидна композици Download PDF

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SU1628841A3
SU1628841A3 SU843785909A SU3785909A SU1628841A3 SU 1628841 A3 SU1628841 A3 SU 1628841A3 SU 843785909 A SU843785909 A SU 843785909A SU 3785909 A SU3785909 A SU 3785909A SU 1628841 A3 SU1628841 A3 SU 1628841A3
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butyl
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Б.Роджерс Ричард
Джервик Ш Б.Клиффорд
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Дзе Дау Кемикал Компани (Фирма)
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Abstract

Изобретение относитс  к химическим средствам борьбы с сорной растительностью в посевах культурных растений. Цель изобретени  - уничтожение сорных растений в посевах злаковых культур с помощью гербицидной композиции, содержащей, мас.%: в качестве активного вещества производное арилоксиалканкарбоновой кислоты общей формулы р 9нз :о осн-соп & где R - метил или втор.бутил, 3.38-26,00, носитель 59,2-84.5 и поверхностно-активное вещество 6-30,25. Данна  композици  эффективно поражает сорные растени  в посевах пшеницы и  чмены, не поврежда  последние. 7 табл. &

Description

Изобретение относитс  к химическим средствам борьбы с сорной и нежелательной растительностью.
Цель изобретени  - повышение избирательности действи  гербицидной композиции , содержащей в качестве активного компонента производные арилоксиалкан- карбоновых кислот.
Ниже представлены активные вещества гербицидной композиции, способ их получени  и примеры, иллюстрирующие эффективность данной композиции.
П р и м е р 1. Получение метилового эфира (4-бром)-2-фторфенокси фенок- сипропионовой кислоты (соединение I).
Смесь, состо щую из 4-{4-бром-2-фтор- &фенокси)фенола (0,02 моль), метилового эфира 2-бромпропионовой кислоты (0,02 моль) и карбоната кали  (0,022 моль) в 30 мл диме- тилсульфоксида, перемешивают в атмосфере азота при комнатной температуре в течение 18 ч. После этого реакционную массу выливают в 300 мл воды, экстрагируют эфиром (2x100 мл), эфирный экстракт промывают водой, сушат над сульфатом магни , упаривают растворитель и получают конеч- ный продукт в виде желтого масла с
.5628(выход81%).
Найдено, %: углерод 52,12; водород 3,64.
Вычислено, %: углерод 52,05;
водород 3,82.
В услови х примера 1 получают втор, бутиловый эфир 2-{4-{4-бром 12-фторфенок- си феноксипропионовой кислоты (соединение II), пю25, 1,5385.
Формы гербицидной композиции. Состар А, мас.%:
Соединение I 24,8
О КЗ 00 00
4
СО
I
Блоксополимер ди-{втор, бутил) фенилполиоксипропилена с оксиэтиленом4,0
Додецилбензолсульфонат кальци 4,0
Смесь ксилолов67,2
Состав Д, мас.%:
Соединение I7,0
Парафиновое масло58,0
Нонилфенолэтилен-
оксид4,8
Полиоксиэтиленолеиловый эфир7,2
Смесь ксилолов23,0
Состав Е, мзс.%:
Соединение 3,5
Парафиновое масло58,0
Нонилфенолэтилен- оксид4,8
Полиоксиэтиленолеиловый
эфир7,2
Смесь ксилолов26,5
Состав F, мас.%:
Соединение I13,2
Парафиновое масло40,0
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с оксиэтиленом19,0
Олеинова  кислота1,0
Смесь ксилолов26,8
Составе, мас.%:
Соединение I6,8
Парафиновое масло40,0
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с
оксиэтиленом19,0
Олеинова  кислота1,0
Смесь ксилолов33,2
Состав Н, мас.%:
Соединение I12,8
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с оксиэтиленом23,8
Олеинова  кислота1 0
Додецилбензолсульфонат
кальци 3,2
Смесь ксилолов59,2
Состав I, мас.%:
Соединение I3,5
Парафиновое масло40,0
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с оксиэтиленом19,0
Олеинова  кислота1,0
Смесь ксилолов36,5
Состав L, мас.%:
Соединение I13,4
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с оксиэтиленом4,0
Додецилбензолсульфонат кальци 4,0
Смесь ксилолов78,6
Состав М, мас.%:
Соединение I25,99
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с оксиэтиленом2,0
Лигносульфонат натри 4,0
Кремнезем17,0
Глина51,01
Состав N, мас.%:
Соединение I3,38
Парафиновое масло39,0
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с оксиэтиленом19,5
Полиоксиэтилированный тридециловый
спирт2,15
Неионогенный алифатический полиоксиэтилен4,3
Смесь сульфоната кальци , полиоксиэтиленовых эфиров жирных кислот и простого полиоксиэтиленового алкилового эфира4,3
Смесь ксилолов27,37
Состав, Р, мас.%:
Соединение II14,9
Додецилбензолсульфонат кальци 4,0
Блоксополимер ди-(втор.бутил) фенилполиоксипропилена с оксиэтиленом4,0
Смесь ксилолов77,1
Состав 0, мас.%:
Соединение
Лигносульфонат Na6,5
Диалкилнафталин
сульфонат3,5
Гидратированный
кремнезем16,0о
Барденска  жидкость48
П р и м е р 2. Определение гербицидной активности при послевсходовой обработки. Опытные растени  (сорные и культурные ) выращивают на опытных дел нках до высоты 10 см и обрабатывают соответствующими составами гербицидной композиции . Оценку гербицидной активности провод т через определенное врем  после обработки и выражают ее по шкале от 0 до 100 (0 - отсутствие повреждений; 100 - полна  гибель растений).
Результаты опытов представлены в табл. 1-6.
В табл.1 приведена гербицидна  активность составов.
П р и м е р 3. Сравнительный опы Провод т в услови х примера 2. Дл  сравнени  используют известный гербицид - метиловый эфир (4-трифторметил)-2- фторфенокси феноксипропионовой кислоты (соединение III). Результаты опыта представлены в табл.7.

Claims (1)

  1. Формула изобретени  Гербицидна  композици , содержаща  активное вещество - производное арилок- сиалканкарбоновой кислоты, носитель и поверхностно-активное вещество, отличающа с  тем, что, с целью повышени  избирательности действи  композиции при использовании ее дл  борьбы с сорн ками в посевах злаковых культур методом по- слевсходовой обработки, в качестве активного вещества композици  содержит производное арилоксиалканкарбоновой кислоты общей формулы
    Тсн3
    )-OCH-COR
    и
    где R - метил или втор, бутил, О
    0
    5
    0
    5
    в качестве носител  - вещество или сочетание веществ, выбранное из группы, включающей парафиновое масло, смесь ксилолов, кремнезем, глину, в качестве поверхностно- активного вещества - вещество или сочетание веществ, выбранное из группы, включающей блоксополимер ди-{втор.бу- тил)фенилполиоксипропилена с оксиэтиле- ном, додецилбензолсульфонат кальци , олеиновую кислоту, лигносульфонат натри , нонилфенолэтиленоксид, диалкилнафта- линсульфонат натри , простой полиоксиэ- тиленовый эфир олеилового спирта, неионогенный алифатический полиоксиэти- лен, полиоксиэтилированный тридецило- вый спирт, смесь сульфоната кальци , полиоксиэтиленовыхэфиров жирных кислот и простого полиоксиэтиленового алкилово- го эфира при следующем соотношении ингредиентов композиции, мас.%:
    Активное вещество3,38-26,00
    Носитель59,2-84,5
    Поверхностно-активное
    вещество6.00-30,25
    Таблица 1
    Таблица 2
    Таблица 3
    Таблица 4
    Таблица 5
    Таблица 6
    Таблица 7
SU843785909A 1983-09-01 1984-08-31 Гербицидна композици SU1628841A3 (ru)

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