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Biodegradable gum base elastomer and preparation method thereof

A chewing gum-based and bio-based technology, applied in the polymer field, can solve problems such as narrow selection of photoactive substances, and achieve the effects of easy control of reaction time, low glass transition and low cost

Active Publication Date: 2013-01-02
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are relatively few reports on this type of chewing gum, which may be related to the relatively narrow selection range of photoactive substances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] ① Prepare biomass monomers with a purity of more than 99%, 1,3-propanediol, glycerol, sebacic acid and succinic acid.

[0027] ②In the reaction device equipped with mechanical stirring, nitrogen inlet and outlet, thermometer, heating device and condenser tube, add 15.22 grams (0.2mol) of 1,3-propanediol, 4.61 grams (0.05mol) Glycerol, 25.28 grams (0.125 mol) of sebacic acid and 14.76 grams (0.125 mol) of succinic acid.

[0028] ③ After the reaction device is set up, first vacuumize the air in the device, and check the vacuum degree of the closed device of the polycondensation reaction, and repeat the vacuum several times until the vacuum degree reaches above 300Pa, close the air valve, stop vacuuming, and slowly Introduce nitrogen, and open the air valve when the reading of the vacuum gauge returns to zero and the atmospheric pressure inside and outside is equal.

[0029] ④In a nitrogen atmosphere, under the condition of mechanical stirring, raise the reaction temperat...

Embodiment 2

[0032] ① Prepare biomass monomers with a purity of more than 99%, 1,3-propanediol, glycerol, sebacic acid and succinic acid;

[0033] ②In the reaction device equipped with mechanical stirring, nitrogen inlet and outlet, thermometer, heating device and condenser tube, add 15.22 grams (0.2mol) of 1,3-propanediol, 4.61 grams (0.05mol) Glycerol, 30.34 grams (0.15mol) of sebacic acid and 11.81 grams (0.10mol) of succinic acid;

[0034] ③ After the reaction device is set up, first vacuumize the air in the device, and check the vacuum degree of the closed device of the polycondensation reaction, and repeat the vacuum several times until the vacuum degree reaches above 300Pa, close the air valve, stop vacuuming, and slowly Introduce nitrogen, and open the air valve when the reading of the vacuum gauge returns to zero and the atmospheric pressure inside and outside is equal;

[0035] ④In a nitrogen atmosphere, under the condition of mechanical stirring, raise the reaction temperature ...

Embodiment 3

[0038] ① Prepare biomass monomers with a purity of more than 99%, 1,3-propanediol, glycerol, sebacic acid and succinic acid;

[0039] ②In the reaction device equipped with mechanical stirring, nitrogen inlet and outlet, thermometer, heating device and condenser tube, add 15.22 grams (0.2mol) of 1,3-propanediol, 4.61 grams (0.05mol) Glycerol, 35.39 grams (0.175mol) of sebacic acid and 8.86 grams (0.075mol) of succinic acid;

[0040] ③ After the reaction device is set up, first vacuumize the air in the device, and check the vacuum degree of the closed device of the polycondensation reaction, and repeat the vacuum several times until the vacuum degree reaches above 300Pa, close the air valve, stop vacuuming, and slowly Introduce nitrogen, and open the air valve when the reading of the vacuum gauge returns to zero and the atmospheric pressure inside and outside is equal;

[0041] ④In a nitrogen atmosphere, under the condition of mechanical stirring, raise the reaction temperature...

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Abstract

The invention discloses a biodegradable gum base elastomer and a preparation method thereof, and belongs to the technical field of macromolecules. The elastomer is prepared by performing pre-polycondensation on aliphatic dibasic alcohol with the purity of over 99 percent, aliphatic saturated dibasic acid and a small amount of trifunctional glycerin at the temperature of between 160 and 180 DEG C for 2 to 4 hours in nitrogen atmosphere by a direct melt polycondensation method to generate a large amount of water, and gradually adjusting the vacuum degree to 100 to 2,000Pa at the temperature of between 190 and 220 DEG C within 0.5 to 2 hours until polymer climbs a pole and cannot be stirred. The product has low glass transition temperature, belongs to a gel / sol system, contains over 65 percent of sol, can be used as an environment-friendly gum base elastomer, and lays a solid foundation for producing biodegradable gum; and the process is simple and is convenient to operate, a catalyst isnot used, and the product is safe and non-toxic and has high yield.

Description

technical field [0001] The invention relates to the preparation of a degradable chewing gum base elastomer, in particular to a polyester environment-friendly biodegradable chewing gum base elastomer formed by direct polycondensation of renewable biomass monomers, and belongs to the technical field of polymers. Background technique [0002] The composition of chewing gum mainly includes gum base, powdered sugar and syrup. Among them, both powdered sugar and syrup are soluble in water, and will slowly melt and absorb with saliva when chewing, so the remaining substances after people chew are mainly gum base. The macromolecular substances that make up the gum base are mainly elastomers and polymeric resins. These two types of substances endow the gum base with appropriate viscoelasticity and plasticity under the compatibility of other additives, and further endow the chewing gum with appropriate chewing properties, film-forming properties and flavor and flavor retention proper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/20C08G63/78A23G4/08
Inventor 张立群翁靖一刘全勇王润国康海澜
Owner BEIJING UNIV OF CHEM TECH
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