Unlock instant, AI-driven research and patent intelligence for your innovation.

Polymeric composition for use as soil conditioner with improved water absorbency during watering of the agricultural crops

A technology of soil improver and biopolymer, applied in animal repellent, fertilizer mixture, soil conditioning material, etc., can solve the problem of low purification degree

Active Publication Date: 2021-08-17
聚合物绿色有限责任公司
View PDF58 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These materials have a water holding capacity of less than 200g / g for demineralized water and a low degree of purification, which limits their use to small area gardening

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymeric composition for use as soil conditioner with improved water absorbency during watering of the agricultural crops
  • Polymeric composition for use as soil conditioner with improved water absorbency during watering of the agricultural crops
  • Polymeric composition for use as soil conditioner with improved water absorbency during watering of the agricultural crops

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0099] (ii) Preparation of an aqueous solution of biopolymer B: in equipment similar to the purification of the above-mentioned synthetic polymer A, a certain amount of powdered solid biopolymer B and a certain amount of demineralized water are loaded, and finally passed through at a speed not higher than 60rpm Stirring at a rotational speed of 1 hour, a polymer B suspension with a concentration of 15% by weight was obtained. In addition, the mixture is heated to a temperature of 40-80°C, preferably 45-85°C, most preferably 50-90°C under stirring, and then the mixing mode and temperature are kept constant for 30-180 minutes, preferably 45-150 minutes, most preferably 60-120 minutes. Finally, the resulting mixture was cooled to a temperature of 35-40 °C to obtain a transparent biopolymer B solution.

[0100] (iii) Preparation of an aqueous solution of Biopolymer C: In a stirring device, load Biopolymer C and a certain amount of demineralized water in the form of a powdery soli...

example

[0168] The following examples are only intended to further illustrate the present invention, and are not intended to limit the scope of the present invention, which is defined by the claims.

example 1

[0170] 600 ml of demineralized water with a conductivity of 4.3 μS and 150 g of ISOBAM 18, poly(isobutylene-co-maleic anhydride) (as Polymer A) with a molecular weight of 350,000 Da from Kuraray Co., Ltd., Japan, were added to a 1-liter reaction vessel, The reaction vessel was equipped with an anchored stir bar with four blades, a thermostatic jacket and a thermometer. The aqueous suspension of polymer A was stirred at a temperature of 40° C. for 4 hours. Finally, the aqueous dispersion was brought to ambient temperature and the solid phase was separated by vacuum filtration. The wet solid was washed three times with 100 ml of demineralized water. The supernatant was analyzed for the content of dissolved substances using HPLC. The wet solid was subjected to another extraction under similar conditions as above. After three extractions, the content of dissolved substances in the supernatant was 8 ppm. In the end, 192 g of a wet solid were obtained with a water content of 22....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
water absorptionaaaaaaaaaa
Login to View More

Abstract

The present invention relates to polymeric soil conditioner as a new water absorbing polymeric material and a process for the production of water absorbing materials consisting of a combination of synthetic polymers and biopolymers, with an improved high water absorbency at repeated watering, capable to reduce the effect of accumulation of salts in polymeric matrix as of multiple cycles of swelling-deswelling that occurs during all period of living of vegetable culture, by decreasing of crosslinking density of three dimensional network of the material caused by biochemical processes that developed in polymeric gels.

Description

Background technique [0001] Polymeric materials with a high water absorption capacity or so-called superabsorbent polymers SAP are well known in the art. In recent years, water-absorbent polymers have been used not only in hygienic materials such as sanitary napkins, paper diapers, etc., but also in materials requiring water-absorbing and water-retaining properties, and in agriculture and gardening. Unlike other fields of application where the properties of SAPs are suitable for their intended use, in agriculture there is a poor correlation between the properties of the SAPs used and those necessary for polymeric soil amendments. This poor correlation is especially evident in terms of water holding capacity, water use efficiency, water consumption (in kg SAP / ha) and keeping the soil healthy to be able to participate in new crop production cycles again. [0002] To better understand the specific requirements of SAPs that can be used as high-water-holding soil amendments in agr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40A01N63/50C05G3/80
CPCC05G3/80C05F11/10C09K17/18C09K17/32C05G5/40B01J20/24B01J20/261B01J20/28004B01J20/28016C05F11/00C09K17/22
Inventor M·D·布切夫斯基Z·美里S·沙哈尔
Owner 聚合物绿色有限责任公司