Preparation method of tannin grafted draping double bonds

A technique of pendant and tannin, which is applied in the field of preparation of tannin grafted pendant double bonds, can solve the problems of difficult separation, large molecular weight, complex products, etc., and achieve simple and easy preparation methods, mild implementation conditions and pure products Effect
CN112126076AInactive Publication Date: 2020-12-25CHANGCHUN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGCHUN UNIV OF TECH
Publication Date
2020-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of tannin grafted draping double bonds. According to the preparation method, allyl glycidyl ether (AGE) is initiated to be subjected to ring opening grafting to tannin (TA) under the condition of taking triphenylphosphine as a catalyst, so that the tannin is endowed with hyperbranched draping double bonds with reaction activity, and a graft modification product is pure and is easily to separat. The preparation method disclosed by the invention is simple and feasible, the implementation conditions are mild, and no pollution is generated in the production and use processes.
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Description

technical field

[0001] The invention belongs to the technical field of ecological environment materials, and relates to a preparation method of tannin grafted pendant double bonds. Background technique

[0002] As a natural plant polyphenol, tannin (TA) is rich in natural resources and can be recycled. It is an environmentally friendly natural material. The average functionality of the hydroxyl group in the molecular structure of TA is 15, and similar to the hyperbranched polyester, there are 5 branched chains, 25 hydroxyl groups and 10 ester chains connected to the pyran heterocycle, and the phenol functional group can be used as a hydrogen donor , can also participate in various chemical reactions as a hydrogen acceptor, so that tannic acid has corresponding chemical and physiological activities, and has a wide range of applications in food, medicine, leather, daily chemical products and other fields.

[0003] Tannin has a large relative molecular weight and many active f...

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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