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Low temperature water-soluble pesticide packaging film and preparation method thereof

A water-soluble, packaging film technology, applied in the field of water-soluble packaging films, can solve the problems of long dissolution time, affecting work efficiency, toxic gas volatilization, etc., and achieve the effect of good water solubility and environmental protection

Inactive Publication Date: 2017-03-15
安徽鼎正高分子材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the dissolution temperature is high, the active ingredient of the drug may be inactivated, or the toxic gas may be volatilized, or a chemical reaction may occur
When the dissolution temperature is 25-40°C, the dissolution efficiency is significantly reduced, and a longer dissolution time is required, which affects work efficiency
In addition, the water-soluble speed of some water-soluble packaging films is too fast, so the packaged pesticides cannot achieve the slow-release effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 4-2 parts of polyethylene glycol 6000 and 1-2 parts of cetyl alcohol to 6-8 parts of polyethylene oxide, heat to 70-80°C and mix for 5 minutes, then add 1 part of N-methylpyrrolidone and 0.5 parts of benzyltriethylammonium chloride, continue to heat to 110-120 ° C and mix for 10 minutes to obtain material I;

[0025] (2) Add 2-1 parts of polyhydroxyalkanoate and 0.5 parts of tea seed powder to 4-6 parts of activated clay, mix well and let stand for 30 minutes, then heat to 100-110°C and mix for 10 minutes, then add while hot 6-4 parts of maltodextrin and 0.5-1 part of sodium hexametaphosphate are mixed thoroughly to obtain material II;

[0026] (3) Add 30 parts of modified polyvinyl alcohol resin and 4-6 parts of chitosan oligosaccharide to 100-150 parts of water, heat to reflux state and mix for 10 minutes, then add 5-3 parts of pregelatinized potato starch and 2-4 parts Part glutinous rice flour, continue to reflux heat preservation and mix for 10min, obtain ...

Embodiment 2

[0031] (1) Add 4-2 parts of polyethylene glycol 6000 and 1-2 parts of cetyl alcohol to 6-8 parts of polyethylene oxide, heat to 70-80°C and mix for 5 minutes, then add 1 part of N-methylpyrrolidone and 0.5 parts of benzyltriethylammonium chloride, continue to heat to 110-120 ° C and mix for 10 minutes to obtain material I;

[0032] (2) Add 2-1 parts of polyhydroxyalkanoate and 0.5 parts of tea seed powder to 4-6 parts of activated clay, mix well and let stand for 30 minutes, then heat to 100-110°C and mix for 10 minutes, then add while hot 6-4 parts of maltodextrin and 0.5-1 part of sodium hexametaphosphate are mixed thoroughly to obtain material II;

[0033] (3) Add 30 parts of modified polyvinyl alcohol resin and 4-6 parts of chitosan oligosaccharide to 100-150 parts of water, heat to reflux state and mix for 10 minutes, then add 5-3 parts of pregelatinized potato starch and 2-4 parts Part glutinous rice flour, continue to reflux heat preservation and mix for 10min, obtain ...

Embodiment 3

[0038] The performance tests of the pesticide packaging films prepared in Examples 1 and 2 are shown in Table 1.

[0039] The performance test result of the prepared pesticide packaging film in table 1

[0040] Test items Example 1 Example 2 0-5℃ water solubility Completely dissolve within 5s Completely dissolve within 5s 6 months biodegradability 75％ 78％ 12 months biodegradability 100％ 100％ 24-month pesticide storage failure rate 0 0

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PUM

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Abstract

The invention discloses a low temperature water-soluble pesticide packaging film and a preparation method thereof, and relates to the technical field of water-soluble packaging films. The low temperature water-soluble pesticide packaging film is prepared from, by weight, 25-30 parts of modified polyvinylalcohol resin, 4-8 parts of chitosan oligosaccharide, 4-8 parts of polyoxyethylene, 3-6 parts of pregelatinized potato starch, 3-6 parts of maltodextrin, 3-6 parts of activated clay, 2-4 parts of glutinous rice flour, 2-4 parts of poloxamer, 2-4 parts of polyethylene glycol 6000, 1-2 parts of N-methyl-2-pyrrolidinone, 1-2 parts of polyhydroxyalkanoate, 1-2 parts of cetanol, 0.5-1 part of triethylbenzylammonium chloride, 0.5-1 part of tea seed powder, 0.5-1 part of sodium hexametaphosphate, 0.2-0.5 part of polyaspartic acid and 100-150 parts of water. The packaging film is good in water solubility and can be dissolved into cold water under the temperature of 0-5 DEG C; the dissolved substances and pesticide are applied together, enter soil after rain washing, and can be biologically degraded completely within 12 months.

Description

[0001] Technical field: [0002] The invention relates to the technical field of water-soluble packaging films, in particular to a low-temperature water-soluble pesticide packaging film and a preparation method thereof. [0003] Background technique: [0004] Water soluble films are often used in dosing packaging materials to simplify dispensing, pouring, dosing and dissolution. Quantitative packaging bags made of water-soluble films can be used for packaging pesticides or chemical products. When in use, the packaging materials are directly added to a sprayer or a reaction kettle, and can be dissolved after adding water. It is easy to use, does not need additional metering, and avoids direct contact of the human body with pesticides or chemical products, improving operational safety. [0005] At present, this type of water-soluble packaging film has been widely used in the market, but there are still deficiencies. The main reason is the requirement for the dissolution tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L33/26C08L5/08C08L71/02C08L3/02C08L67/04C08K13/02C08K3/34C08K5/19C08K3/32C08K3/36
CPCC08L29/04C08J5/18C08J2329/04C08J2405/08C08J2471/02C08L2201/06C08L2201/14C08L2203/16C08L2205/025C08L2205/035C08L33/26C08L5/08C08L71/02C08L3/02C08L67/04C08K13/02C08K3/34C08K5/19C08K3/32C08K3/36
Inventor 张悦
Owner 安徽鼎正高分子材料科技有限责任公司
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