Low ammonia low protein concentrated natural latex production method

The technology of a natural latex and a production method, which is applied in the field of chemical drugs and enzyme inhibition, can solve the problems of large pollution, high cost, difficult operation, etc., and achieve the effects of stable product quality, short processing time, and easy operability.

Inactive Publication Date: 2009-11-25
李兰桂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main problems of existence are high ammonia, large pollution, high cost, difficult operation, large equipment investment, which affect the product quality of concentrated natural rubber latex, especially the stability and the performance of its products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment one: get 100Kg fresh latex, first stabilize with ammonium laurate, add rubber vulcanization accelerator and zinc oxide 0.03% mass percentage to preserve, adjust to total solid concentration and be 28% mass percentage, add 150g ammonium laurate, after Add 160g Alcalase 3.0T, stir continuously for 1 hour, statically treat, centrifuge and concentrate and make up ammonia to 0.2% by mass, add rubber vulcanization accelerator and zinc oxide 0.03% by mass to preserve, the total ammonia content of natural rubber latex to be concentrated is reduced To the 0.035% mass percentage based on the dry rubber content, add 9g of sodium lauryl sulfate as a chemical stabilizer to preserve, and then the concentrated natural rubber latex with low ammonia and low protein can be obtained.

Embodiment 2

[0013] Embodiment two: get 100Kg fresh latex, first stabilize treatment with ammonium laurate, add rubber vulcanization accelerator and zinc oxide 0.04% mass percentage to preserve, adjust to total solid concentration and be 30% mass percentage, add 150g ammonium laurate at 30 ℃ For the above treatment, add 60g Alcalase 3.0T, stir continuously for 90 minutes, statically treat, centrifugally concentrate and replenish ammonia to 0.2% by mass, the total ammonia content of the concentrated natural rubber latex is reduced to 0.025% in terms of dry rubber content, the mass Percentage, finally add 9g sodium lauryl sulfate to store as chemical stabilizer, just can make low ammonia low protein concentrated natural rubber latex.

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PUM

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Abstract

The invention discloses a natural latex manufacturing method of low amino low protein condensing, which is characterized by the following: adding laurate amine in the fresh latex to do stable disposal; adding 0.06-0.6 g Alcalase 3.0T in fresh latex per kg; stirring continually for 1-2 h; proceeding 10-19 h silencing disposal; supplying ammonia at 0.20 percent in the centrifuged latex timely; adding 0.05-0.1 percent laurate amine simultaneously; adding equivalent perduren accelerant and zinc oxide at 0.02-0.05 percent; conserving; condensing the latex to 0.015-0.065 percent of total weight; adding 1-2 percent dodecyl sodium sulfate at wafer content counting; utilizing ionic water for the whole procedure.

Description

technical field [0001] The invention belongs to a production method of low-ammonia and low-protein concentrated natural rubber latex, and specifically relates to the technology of using enzymes to decompose and remove the protein in the natural rubber latex, the natural latex is stabilized first, and chemical drugs inhibit enzymes. Background technique [0002] The production of existing low-protein concentrated natural rubber latex, the common method is to adopt multiple centrifugation or biochemical methods, that is, directly add a kind of alkaline protease in the fresh latex, utilize enzymatic removal of the protein in the natural rubber latex, concentrate through centrifugation obtained by removing most of the protein. However, the stability of fresh latex and residual enzymes involved in the production process have a significant impact on the chemical stability of concentrated natural latex. The solution often adopts 0.7% high ammonia as a preservative, adopts various ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08C1/04C12S3/00
Inventor 李兰桂李军李虎张容晖郑莉芳
Owner 李兰桂
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