9 Oil-Based Materials and Products
279
that mineral oil did not increase toxic after mixing with chlorpyrifos and avermectin. The toxic compounding agent could be used as an active agent for
agrochemical development. The synergistic effect of mineral oil on the control of certain insecticides against thrips and cotton leaf moths was explored.
The results showed that the mineral oil with suitable physical and chemical
properties could double the effect of certain agrochemical sprays on the control
of thrips and cotton moths while prolonged its residual effect. Liu et al. [37]
studied the plant-derived agrochemical matrine, azadirachtin and mineral oil to
prevent small green leaf empoasca vitis and tarsonemidmites. When diluted 500
times in water, both 0.3% matrine and mineral oil complex solution and 0.3%
azadirachtin and mineral oil complex solution have good effects on the pests
and diseases in the autumn.
9.2.4 Applications of Oils in Emulsifiers
Emulsifiers are important surface-active agents that are essential in liquid agrochemical formulations, such as emulsifiable concentrates, microemulsions, and water
emulsions. Some oils can also be used as agrochemical emulsifiers after modification. Castor oil polyoxyethylene ethers are a kind of commonly used emulsifiers,
which are ethylene oxide modified castor oil. EL and BY series are a general term
for castor oil polyoxyethylene ether in the agrochemical industry. The products have
different specifications depending on the EO addition, such as the commonly used
products of EL-20 and EL-40. Hydrogenated castor oil polyoxyethylene ether (HEL)
is produced from hydrogenated castor oil and has a lower iodine value. It is also can
be used as an agrochemical emulsifier. Researchers are constantly exploring the use
of other oils and ethylene oxide in addition to preparing new emulsifiers, such as
soybean oil polyoxyethylene ether, vegetable oil polyoxyethylene ether, rice bran oil
polyoxyethylene ether, bitter buckwheat Ren oil polyoxyethylene ether, rosin acid
polyoxyethylene ether, etc.
9.2.5 Applications of Oils and Fats in Stabilizers
and Synergists
The active ingredients of an agrochemical preparation may be decomposed or deteriorated in physical properties during storage and transportation. Moreover, the degradation and decomposition processes of various agrochemicals and preparations are
quite complicated as the stability mechanisms are not the same and many are not
completely clear. The addition of an appropriate stabilizer during the preparation of
the agrochemical can prevent the decomposition of the active ingredient. Some fats
and oil derivatives can be added to agrochemical preparations as stabilizers. Related
279
that mineral oil did not increase toxic after mixing with chlorpyrifos and avermectin. The toxic compounding agent could be used as an active agent for
agrochemical development. The synergistic effect of mineral oil on the control of certain insecticides against thrips and cotton leaf moths was explored.
The results showed that the mineral oil with suitable physical and chemical
properties could double the effect of certain agrochemical sprays on the control
of thrips and cotton moths while prolonged its residual effect. Liu et al. [37]
studied the plant-derived agrochemical matrine, azadirachtin and mineral oil to
prevent small green leaf empoasca vitis and tarsonemidmites. When diluted 500
times in water, both 0.3% matrine and mineral oil complex solution and 0.3%
azadirachtin and mineral oil complex solution have good effects on the pests
and diseases in the autumn.
9.2.4 Applications of Oils in Emulsifiers
Emulsifiers are important surface-active agents that are essential in liquid agrochemical formulations, such as emulsifiable concentrates, microemulsions, and water
emulsions. Some oils can also be used as agrochemical emulsifiers after modification. Castor oil polyoxyethylene ethers are a kind of commonly used emulsifiers,
which are ethylene oxide modified castor oil. EL and BY series are a general term
for castor oil polyoxyethylene ether in the agrochemical industry. The products have
different specifications depending on the EO addition, such as the commonly used
products of EL-20 and EL-40. Hydrogenated castor oil polyoxyethylene ether (HEL)
is produced from hydrogenated castor oil and has a lower iodine value. It is also can
be used as an agrochemical emulsifier. Researchers are constantly exploring the use
of other oils and ethylene oxide in addition to preparing new emulsifiers, such as
soybean oil polyoxyethylene ether, vegetable oil polyoxyethylene ether, rice bran oil
polyoxyethylene ether, bitter buckwheat Ren oil polyoxyethylene ether, rosin acid
polyoxyethylene ether, etc.
9.2.5 Applications of Oils and Fats in Stabilizers
and Synergists
The active ingredients of an agrochemical preparation may be decomposed or deteriorated in physical properties during storage and transportation. Moreover, the degradation and decomposition processes of various agrochemicals and preparations are
quite complicated as the stability mechanisms are not the same and many are not
completely clear. The addition of an appropriate stabilizer during the preparation of
the agrochemical can prevent the decomposition of the active ingredient. Some fats
and oil derivatives can be added to agrochemical preparations as stabilizers. Related