Waterborne polyurethane sand-fixing agent and preparation method thereof

A water-based polyurethane and sand-fixing agent technology, which is applied in chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of solvent-based polyurethane, such as high toxicity, poor use safety, and environmental pollution, and achieve favorable survival and growth, water retention performance Enhanced, Inexpensive Effects
CN102304362AInactive Publication Date: 2012-01-04江苏瑞丰科技实业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
江苏瑞丰科技实业有限公司
Publication Date
2012-01-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a waterborne polyurethane sand-fixing agent and a preparation method thereof; the sand-fixing agent is inner crosslinking type waterborne polyurethane dispersion agent which contains neutralizer of kali salt of phosphoric acid and ammonium salt, wherein the solid content of the neutralizer is 30-45%, and the pH value of the neutralizer is 6-8. The preparation method comprises the following steps of: forming a prepolymer through the polymerization reaction of polyether polyol, diisocyanate, dihydromethyl propionic acid, the neutralizer, an inner crosslinking agent, a cosolvent and a catalytic agent, and then adding deionized water to the prepolymer for emulsification to obtain the sand-fixing agent. The waterborne polyurethane sand-fixing agent has the advantages ofwide suitable temperature range, non-toxicity, non-combustion, safety in use, free of environmental pollution and richness in nutrition and the like. As the environmental-friendly nutritional type sand-fixing agent, the waterborne polyurethane sand-fixing agent can be applied to the field of agriculture and forestry.
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Description

technical field

[0001] The invention relates to an environment-friendly nutritional sand-fixing agent, in particular to a water-based polyurethane sand-fixing agent and a preparation method thereof. Background technique

[0002] Desertification has become one of the major environmental problems in the world and has attracted widespread attention from all over the world. my country has carried out desertification research and prevention and control for half a century, but desertification land has been expanding at an accelerated rate. The latest data show that the national desertified land area accounts for 18.2% of the national land area, and the annual desertified land area is still 1283km 2 The rate of spread is equivalent to losing the land area of ​​a medium-sized county every year. June 17, 2009 is the fifteenth "World Day to Combat Desertification and Drought". The advocacy theme determined by the United Nations is "Conserving Land and Water - Securing Our Common Fu...

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
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