CN106748241A - Using epoxidized fatty acid triglyceride oil as coating additive Controlled Release Fertilizer - Google Patents
Using epoxidized fatty acid triglyceride oil as coating additive Controlled Release Fertilizer Download PDFInfo
- Publication number
- CN106748241A CN106748241A CN201611268476.9A CN201611268476A CN106748241A CN 106748241 A CN106748241 A CN 106748241A CN 201611268476 A CN201611268476 A CN 201611268476A CN 106748241 A CN106748241 A CN 106748241A
- Authority
- CN
- China
- Prior art keywords
- coating
- oil
- fatty acid
- acid triglyceride
- epoxidized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
Abstract
A kind of controlled release fertilizer material, it contains the particulate plant nutrient that outer wrap has at least one of which coating, and the coating includes the product of a mixture, and the mixture contains polyalcohol, isocyanates, wax and epoxidized fatty acid triglyceride oil.
Description
Technical field
The present invention relates to a kind of Controlled Release Fertilizer for using epoxidized fatty acid triglyceride oil as coating additive, belong to fertilizer
Material preparation field.
Background technology
Release and release control fertilizer, is the advanced form of slow release fertilizer, and the release of nutrient is mainly controlled by coating, reach safety,
The purpose such as long-acting, efficient, is the Main way of modern Fertilizer development, and suitable mechanization production particularly meets seed manure with the need broadcast
Wait.By modes such as coating, parcel, addition inhibitor, extend the decomposition of fertilizer, release time, be conducive to improving fertilizer
The utilization rate of nutrient, so as to the purpose for reaching the extension fertilizer term of validity, promoting agricultural volume increase.Be Ministry of Agriculture emphasis promote fertilizer it
One.Common Controlled Release Fertilizer is roughly divided into：Sulphur is coated（Fertilizer bag fertilizer）, resin coating, urease inhibitorses etc., by production technology not
Together, can be divided into again：Chemical combination type, mixed type and mix type etc..
In general, people can control the speed of nutrients release by adding wax in the polymer coating of CRF.This
Sample does the thickness that can reduce coating, so that reduces cost.Therefore, coating on CRF is generally very thin, for example, for 3-50 is micro-
The rank of rice.Particularly, it is subject to strong treatment to CRF during as Fertilizer application from production.For example, people are in production
Go out after CRF, also transmitted, packed and transported.CRF can be transported repeatedly, such as in one or more manufacturers, sold
CRF is transmitted between business, whole seller, retailer, consumer.Once in reaching consumer's hand, CRF generally " opened bag ", be put into point
In with device, eventually as Fertilizer application.Therefore, during from production to use, the accumulation shadow that these CRF processing procedures are formed
Ringing will cause those to be typically used in the easier by physical damnification than relatively thin coating of CRF.If in processing procedure, coating
Destroyed, the sustained release rate overview of fertilizer will be changed significantly, cause the nutrient that can not be estimated and/or not be expected to of CRF to be released
Put speed.In many commercial agriculture applications, this is catastrophic.
Additionally, the inventors discovered that, in some instances, strength of coating reduction may be related to the increase of wax content.More
Specifically, in some specific environments, when certain contents level is reached containing wax content, the mechanical treatment tolerance of fertilizer coating
Can decline.Although being not intended to be fettered by a kind of particular theory or binding mode, the reduction of this tolerance is considered as wax
With the result of polymer coating not increase-volume.
Additionally, the inventors discovered that, in some instances, the rigid increase of coating may be with the increase phase of strength of coating
Close.More specifically, the intensity of coating determines the mechanical treatment tolerance of coated fertilizer.In general, strength of coating rises
The rigid increase of coating can be caused.High rigidity can cause coating to become fragile.In some cases, coating rigidly reaches certain content water
Flat, even if now the intensity of coating is very high, but mechanical treatment tolerance will decline.Although being not intended to be subject to a kind of specific
The constraint of theoretical or binding mode, the reduction of this tolerance is considered as the result that polymer coating becomes fragile.
The content of the invention
Regarding to the issue above, it is an object of the invention to provide a kind of novel Controlled Release Fertilizer, this Controlled Release Fertilizer can mitigate or
Person reduces one or more shortcoming of prior art.
Meanwhile, it is a further object of the present invention to provide a kind of novel method for producing Controlled Release Fertilizer.
Correspondingly, on the one hand, the present invention relates to a kind of CRF materials, it includes the graininess wrapped up by least one of which coating
Plant nutrient.
On the other hand, the present invention relates to a kind of CRF materials, it contains the particulate plant wrapped up by least one of which coating supports
Point, the coating is the product of a mixture, and the mixture is sweet comprising polyalcohol, isocyanates, wax and epoxidized fatty acid
Oily three ester oils.
For CRF materials of the present invention particulate plant nutrient material selection without specific limitation, all in art technology
In scope known to personnel.
Preferred coatings material component is amounted in plant nutrient material and accounts for about 0.1-10wt%, even more preferably about 0.5-
5.0wt%, most preferably 0.7-4.0wt%.
Particularly preferred polyalcohol includes 2-12 hydroxylic moiety.It is preferred that having polynary compared with low equivalent and higher functionality
Alcohol.Preferred equivalent is 29-400.More preferably equivalent is 29-200.Most preferably equivalent is 29-150.Referred to herein as polyalcohol
Degree of functionality refers to the preferred degree of functionality of base unit (or monomer).The degree of functionality of preferred polyol be 2-12 between, more preferably 3-
8, most preferably 3-6.More preferably polyether alcohol is made initiator and is obtained by using amine.Most preferably polyalcohol include by
HuntsmanJeffolA480TM and another polyalcohol, the mixture that preferably castor oil is constituted.
Preferred isocyanate per molecule contains about 1.5-16 NCO group.More preferably isocyanates per molecule contains about 2-
16 NCO groups.Most preferably isocyanates per molecule contains about 3-16 NCO group.
It is suitable for producing the epoxidized fatty acid triglyceride oil limitation of You nothing special of coating, and all in this area
In range of choice known to person skilled in the art.The epoxidized fatty acid triglyceride oil can be a ring for single type
The mixture of oxidation of fat acid triglyceride oil or different type epoxidized fatty acid triglyceride oil.The epoxidized fatty acid is sweet
Oily three ester oils can come from it is any can epoxidised natural triglycerides ester oil.Preferred fat acid triglyceride oil (before epoxidation)
From the following group：Vegetable oil, fatty acid oil, seeds and its mixture of oil-containing.More preferably fatty acid triglyceride oil (epoxidation
Before) be selected from the group：Corn oil, Canola oil, sunflower oil, soya-bean oil, linseed oil, and its mixture.Most preferably fatty acid glycerine
Three ester oils (before epoxidation) include soya-bean oil.Limitation that the epoxidation mode of fatty acid triglyceride oil You nothing special, and all exist
In scope known to those skilled in the art.Epoxidized fatty acid triglyceride oil is to enter one by fatty acid triglyceride oil
A kind of product that step working process is obtained.Epoxide group is included in triglyceride oil.The epoxide group can be by sweet in three acid
Grease oil in aoxidize unsaturated bond or in triglyceride oil diol dehydratase and be introduced into.For example, can be by with oxygen
Double bond that gas or other oxidants such as peroxide come in oxidation of fat acid triglyceride oil and obtain epoxidized fat acid glycerol
Three ester oils.Epoxy group content in epoxidized fatty acid triglyceride oil, will depending in fatty acid triglyceride oil not
The content and degree of oxidation of saturated bond.Its excursion is wider.Epoxide group in epoxidized fatty acid triglyceride oil contains
Amount may change in a wide range.Suitable epoxidized fatty acid triglyceride oil can be with commercially available, such as
ElfAtochemVikoflex7170TM。
When the content of epoxidized fatty acid triglyceride oil in coating is in certain content level with respect to the content of wax, ring
Oxidation of fat acid triglyceride oil may overflow, or by fresh surface or material such as paper or plastic sheeting from coating
Extract.Reason is that epoxidized fatty acid triglyceride oil fat is main to be existed with liquid condition.Spilling is due in coating
Epoxidized fatty acid triglyceride oil saturation.When epoxidized fatty acid triglyceride oil overflows or is extracted coating,
The loose structure that coating surface leaves just creates channel for the infiltration of water, is remarkably improved rate of release.It is thus determined that epoxy
It is important for the proper proportion of wax and polymeric coating composition to change fatty acid triglyceride oil.Should be according to selected epoxidation fat
Fat acid triglyceride oil, wax, the property of polymeric coating composition determine proper proportion.The determination of the proper proportion of selected component
Method should be in scope known to those skilled in the art.Allyl acrylate makes in component as fertilizer synergistic agent
With.
Specific embodiment
Come to make the present invention with reference to embodiments and further describe in detail.
Embodiment 1
In the present embodiment, the effect that epoxidized fatty acid triglyceride oil is epoxidised soybean oil (ESO) is added to be confirmed,
Now it accounts for the 2.7% of coating weight.
According to a kind of above-mentioned production for using epoxidized fatty acid triglyceride oil as the Controlled Release Fertilizer of coating additive
After method makes, coating ingredients are applied over urea fertilizer.
According to implementation result, when coating weight 2.7% is accounted for, there is no the fertilizer of epoxidized fatty acid triglyceride oil with coating
Material is compared, and the mechanical handling durability with the fertilizer comprising epoxidized fatty acid triglyceride oil coating is improved.Coating
After vibratory sieve experiment, compared with the fertilizer that coating does not have epoxidized fatty acid triglyceride oil, with comprising epoxidized fatty acid
Nitrogen releasing ratio of the fertilizer of triglycerides oil coating at 1 day, 7 days and 28 days is relatively low.
Embodiment 2
In the present embodiment, the epoxidized fat in epoxidized fatty acid triglyceride oil (ESO) and the mixture of wax is demonstrated
The influence of acid triglyceride oil contents level.
Therefore, according to the universal method in embodiment 1, the formula that will change ESO contents in ESO/ wax mixtures is used for
Coated urea material.For each product in the present embodiment, coating accounts for the 2.7% of whole product weight.ESO/ wax mixtures account for painting
The ratio of layer gross weight is fixed as 55%.
Before and after the experiment of coating vibratory sieve, the water release overview of each sample is determined.
Containing in the mixture of fatty acid triglyceride oil and wax the former account for the fertilizer of the coating of 5-50%, compared to containing
The fertilizer of the coating comprising fatty acid triglycercide, does not show stronger mechanical treatment tolerance.In the experiment of coating vibratory sieve
Afterwards, with the mixture of fatty acid triglyceride oil and wax the former account for the fertilizer of the coating of above-mentioned percentage, compared to having
The fertilizer of the coating of fatty acid triglycercide is not included, and the releasing ratio of nitrogen is general all than relatively low.ESO/ wax mixtures are accounted in ESO
During gross weight 20-30%, mechanical handling durability improves most.This optimum range can be as ESO/ waxes be in whole coating
Content or other parameters and change.
Embodiment 3
This example demonstrates the service condition of various polyalcohols in CRF of the invention.We used
HuntsmanA480, A800 and SD361 polyalcohol.In embodiment 1 after process used, coating ingredients are applied over urea
Fertilizer.For each product of the present embodiment, coating accounts for the 2.7% of gross weight in the product.
Product is tested by above-mentioned coating vibratory sieve.
Before and after the experiment of coating vibratory sieve, the water release overview of each sample is determined.According to many in coating formula of the present invention
The selection of first alcohol can influence fertilizer reclaimed water to discharge overview and mechanical handling durability to be improved.
Described above not limitation of the present invention, the present invention is also not limited to the example above.The art it is common
In essential scope of the invention, change, remodeling, addition or the replacement made should also belong to protection of the invention to technical staff
Scope.
Claims (4)
1. a kind of controlled release fertilizer material, it includes the particulate plant nutrient wrapped up by least one of which coating, and the coating is included
There is the product of a mixture, the mixture contains polyalcohol, isocyanates, wax and epoxidized fatty acid triglyceride oil,
The epoxidized fatty acid triglyceride oil is selected from the group：Epoxidized corn oil, epoxidized canola oil, epoxidation sunflower
Oil, epoxidized soybean oil, epoxidation linseed oil, epoxidized tree seed oil, and its mixture, the epoxidized fat acid glycerol three
The weight of ester oil accounts for the 0.1wt%-70wt% of total coating weight, and the weight of the epoxidized fatty acid triglyceride oil accounts for epoxy
The 5wt%-70wt% of the gross weight of change fatty acid triglyceride oil and wax, the epoxidized fatty acid triglyceride oil and wax
Gross weight accounts for the 0.1wt%-75wt% of total coating weight, and the weight of the coating is the particulate plant nutrient weight
0.1wt%-10wt%.
2. controlled release fertilizer material as claimed in claim 1, it is characterised in that the plant nutrient includes water soluble compound.
3. controlled release fertilizer material as claimed in claim 2, it is characterised in that the water soluble compound contains a mixture, this is mixed
Compound includes at least one material being selected from the group：Nitrogen, phosphorus, potassium, sulphur, micro-nutrient composition and its mixture.
4. controlled release fertilizer material as claimed in claim 2, it is characterised in that the plant nutrient includes allyl acrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268476.9A CN106748241A (en) | 2016-12-31 | 2016-12-31 | Using epoxidized fatty acid triglyceride oil as coating additive Controlled Release Fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268476.9A CN106748241A (en) | 2016-12-31 | 2016-12-31 | Using epoxidized fatty acid triglyceride oil as coating additive Controlled Release Fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106748241A true CN106748241A (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611268476.9A Withdrawn CN106748241A (en) | 2016-12-31 | 2016-12-31 | Using epoxidized fatty acid triglyceride oil as coating additive Controlled Release Fertilizer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569774A (en) * | 2004-04-27 | 2005-01-26 | 山东农业大学 | Heavy polymer coated slow-release fertilizer with sulfide as bottom coat |
| CN101177365A (en) * | 2007-11-01 | 2008-05-14 | 山东农业大学 | Long-acting special controlled release fertilizer for corn and preparation method thereof |
| CN101282919A (en) * | 2005-08-09 | 2008-10-08 | 阿格里姆公司 | Controlled release fertilizer employing epoxidized fatty acid triglyceride oil as a coating additive |
| CN104030802A (en) * | 2014-05-23 | 2014-09-10 | 北京市农林科学院 | Coated controlled-release fertilizer and preparation method thereof |
-
2016
- 2016-12-31 CN CN201611268476.9A patent/CN106748241A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569774A (en) * | 2004-04-27 | 2005-01-26 | 山东农业大学 | Heavy polymer coated slow-release fertilizer with sulfide as bottom coat |
| CN101282919A (en) * | 2005-08-09 | 2008-10-08 | 阿格里姆公司 | Controlled release fertilizer employing epoxidized fatty acid triglyceride oil as a coating additive |
| CN101177365A (en) * | 2007-11-01 | 2008-05-14 | 山东农业大学 | Long-acting special controlled release fertilizer for corn and preparation method thereof |
| CN104030802A (en) * | 2014-05-23 | 2014-09-10 | 北京市农林科学院 | Coated controlled-release fertilizer and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20170531 |