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Bio-based high-branched polyester and preparation method thereof

A highly branched, bio-based technology, applied in the field of polymer chemistry, can solve the problems of inability to further process and complicated preparation methods, and achieve low glass transition temperature, simple preparation method, and good thermal stability.

Active Publication Date: 2014-01-01
安徽固瑞特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vegetable oil is derived from nature, the price is relatively cheap, the output is large, environmental protection, non-toxic, renewable, its molecular weight is large, the structure contains a large number of reactive functional groups, including double bonds, ester bonds, etc., and has been used to prepare bio-based polymers [F.Seniha Guner, Yusuf Yagci, A.Tuncer Erciyes.Polymers from triglyceride oils.Prog.Polym.Sci, 31 (2006) 633-670], but its preparation method is generally more complicated, and existing vegetable oil is used as raw material The prepared polymers are all cross-linked polymers, which cannot be further processed. It is hoped that the bio-based highly branched polyester is not cross-linked, but can also be processed and formed.

Method used

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  • Bio-based high-branched polyester and preparation method thereof
  • Bio-based high-branched polyester and preparation method thereof
  • Bio-based high-branched polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the preparation of rapeseed oil highly branched polyester

[0025] Add 100g of rapeseed oil and 10g of dicumyl peroxide (DCP) into a three-necked flask, heat to 160°C, and pass N 2 Protect, react for half an hour, and take it out. Dissolve 10 g of the prepared polymer in 80 ml of benzene, add 100 ml of ethanol dropwise to obtain a layered liquid, separate the liquids, collect the lower layer liquid to obtain the required hyperbranched polyester, and dry it to obtain a mass of 5.8 g. The number average molecular weight measured by GPC means is 30502 g / mol, and the polydispersity is 5.7. The glass transition temperature measured by differential scanning calorimetry is -72°C, and the decomposition temperature is 330°C.

[0026] Add 50g of the rapeseed oil hyperbranched polyester prepared by the above method and 4g of dicumyl peroxide into a 100ml three-neck flask, heat to 80°C, stir for 10min, quickly pour it into a mold, and place it on a flat vulcanizer. ...

Embodiment 2

[0028] Embodiment 2: the preparation of soybean oil hyperbranched polyester

[0029] Add 100g of soybean oil and 15g of DCP into a three-necked flask, heat to 160°C, pass N 2 Protect, react for half an hour, and take it out. Dissolve 10 g of the prepared polymer in 60 ml of benzene, add 50 ml of ethanol dropwise to obtain a layered liquid, separate the liquids, collect the lower layer liquid to obtain the required hyperbranched polyester, dry it, and weigh 6.2 g of it. The number average molecular weight measured by GPC means is 50258g / mol, and the polydispersity is 5.9. The glass transition temperature measured by differential scanning calorimetry is -72°C, and the decomposition temperature is 345°C.

[0030] Add 50g of the rapeseed oil hyperbranched polyester prepared by the above method and 4g of dicumyl peroxide into a 100ml three-neck flask, heat to 80°C, stir for 10min, quickly pour it into a mold, and place it on a flat vulcanizer. Perform vulcanization and cross-linki...

Embodiment 3

[0031] Embodiment 3: the preparation of corn oil highly branched polyester

[0032] Add 100g of corn oil and 15g of DCP into the three-necked flask, heat to 160°C, pass N 2 Protect, react for half an hour, and take it out. 10 g of the prepared polymer was dissolved in 50 ml of benzene, and 90 ml of ethanol was added dropwise to obtain a layered liquid, which was separated, and the lower liquid was collected to obtain the required hyperbranched polyester, dried, and its mass was weighed to be 5.7 g. The number average molecular weight measured by GPC means is 45862 g / mol, and the polydispersity is 6.2. The glass transition temperature measured by differential scanning calorimetry is -68°C, and the decomposition temperature is 296°C.

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Abstract

The invention relates to a bio-based high-branched polyester and a preparation method thereof. The bio-based high-branched polyester is obtained by bulk polymerization initiated through a free radical and then purifying. According to the invention, the obtained polyester is not gelled and double bonds still exist on the branched chains of the polyester, thus an elastomer is prepared by further processing and crosslinking; and the polyester can also be used as a flexibilizer of a composite material and a plasticizer of rubber, and can further be used for preparing an oil absorption resin. In the invention, the used raw material is plant oil and is not dependent on a petroleum resource, thus having important significance in the aspect of solving the increasingly deficient problem of petroleum resources.

Description

Technical field: [0001] The invention relates to a bio-based highly branched polyester and a preparation method thereof, belonging to the field of polymer chemistry. Background technique: [0002] At present, most of the chemical industrial raw materials needed for production and life in the world, as well as various engineering materials and industrial coatings, etc. come from petrochemical products. With the increasing scarcity of world oil resources and the increasing shortage of other primary energy sources, the search for raw materials that can replace oil has attracted widespread attention. The production of bio-based polymers is expected to meet the urgent needs of the rapid development of the modern economy. At present, there are few biomass raw materials that can be obtained by biological methods, and finding monomers that can be used to prepare high polymers has become a matter of great concern to people. Vegetable oil is derived from nature, the price is relativ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F22/14C08F2/02C08J3/24C08L101/00B01J20/26B01J20/30
Inventor 张立群王朝何敏韩悦王润国康海澜危涛
Owner 安徽固瑞特新材料科技有限公司
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