Method for preparing structure type flame-retardant castor-oil-based polyester polyol and applications thereof

A polyester polyol, castor oil-based technology, applied in the preparation of structural flame-retardant castor oil-based polyester polyol and its application field, can solve the difficulties in the synthesis of tribromostyrene, harsh reaction conditions, and corrosion of foaming equipment In order to achieve the effects of low cost, low smoke density and improved flame retardant performance
CN102432850AInactive Publication Date: 2012-05-02INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
Publication Date
2012-05-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing structure type flame-retardant castor-oil-based polyester polyol and applications thereof. The method comprises the following steps: castor oil and small-molecular alcohol generate alcoholysis reaction under the existence of an alkali catalyst, and then generate esterification reaction with tetrabromophthalic anhydride under the existence of an esterification catalyst, and the flame-retardant castor-oil-based polyester polyol is obtained, wherein the hydroxyl value is 100-450mg / gKOH, the acid value is less than or equal to 1.5mg / gKOH and the content of bromine is 5-30wt%. In the method, the middle process does not need to be separated, the cost is low and the process is simple, and the flame retardance of the prepared polyurethane foam is obviously improved. The prepared polyurethane foam has the advantages of no liquid drop of a product in burning, shape maintenance, less smoke density and the like and can be used for buildings, insulation and certain special fields.
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Description

technical field

[0001] The invention relates to the preparation of a structural flame-retardant castor oil-based polyester polyol and its application in polyurethane foam, mainly relating to the preparation of a flame-retardant castor oil-based polyester polyol and its use as a polyol component in polyurethane Application in foam.

[0002] Background technique

[0003] Polyurethane is a kind of high polymer containing carbamate group (-NHCOO-) in its molecular chain. With the different raw materials, additives and process conditions during synthesis, products with different properties can be synthesized, such as foam plastics, rubber, coatings, adhesives, elastic fibers, etc. Polyurethane foam is currently the best thermal insulation material in the world. Because developed countries such as Europe and the United States attach great importance to building energy conservation, polyurethane rigid foam has been widely used in roofs, walls, ceilings, floors, doors and windows ...

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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