Preparation method of bio-based terminated polyether

An end-capped polyether, bio-based technology, applied in biochemical equipment and methods, microorganism-based methods, microorganisms, etc., can solve the problems of complex post-treatment, harmful to the environment, and low economy, and achieve great application potential and methods. Simple and economical, beneficial to continuous production

Active Publication Date: 2021-05-25
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these studies all have a lot of problems such as the use of toxic and harmful reag

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  • Preparation method of bio-based terminated polyether
  • Preparation method of bio-based terminated polyether
  • Preparation method of bio-based terminated polyether

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preparation example Construction

[0030] Further, in the preparation method of the bio-based end-capped polyether, the following steps are preferably included:

[0031] A. Inoculate the Geotrichum candidum, Corynespora portuguese, and Pichia membranoidis cultured on the slant into the seed culture medium respectively, and cultivate them on a shaker at 20-35° C. for 10-12 hours to obtain the three kinds of bacteria respectively. seed culture fluid;

[0032] Specifically, it is preferred to seal the 250 ml Erlenmeyer flask with 100 ml of seed medium and the sealing film, sterilize it at 150°C for 30 minutes, and insert Geotrichum candidum, Corynespora portuguese, membrane Pichia pastoris was cultured on a shaker at 35° C. and 250 rpm for 12 hours to obtain a seed culture solution.

[0033] Seed medium (1 liter) composition: Potassium dihydrogen phosphate 1.6 grams, potassium monohydrogen phosphate 4.6 grams, ammonium sulfate 3 grams, magnesium sulfate 0.5 grams, calcium carbonate 2.3 grams, ferrous ion solution...

Embodiment 1

[0045] Embodiment 1, the preparation method of bio-based capped polyether, comprises the following steps:

[0046] A. Inoculate the Geotrichum candidum, Corynespora portuguese, and Pichia membranoidis cultured on the slant into the seed culture medium respectively, and culture them on a shaker at 35° C. for 12 hours to obtain the seed culture solutions of the three bacteria respectively;

[0047] B. Mix the seed culture solutions of the three bacteria in proportion, inoculate them into the fermentation medium at a volume ratio of 12%, and ferment on a shaking table at 35°C and nitrogen to obtain the active strain culture solution; the Geotrichum candidum, Portugal The inoculum ratio of Corynespora and Pichia membranii was 220:15:73.

[0048] C, get active strain culture fluid 200mL, pack in the 500 milliliter conical flask, add 76 gram hydroxyl polyethers and 49 gram monochloromethane in the culture fluid, bottle mouth is sealed with gauze. The initial concentration of hydrox...

Embodiment 2

[0052] Embodiment 2, the preparation method of bio-based capped polyether, comprises the following steps:

[0053] A. Inoculate the Geotrichum candidum, Corynespora portuguese, and Pichia membranoidis cultured on the slant into the seed culture medium respectively, and culture them on a shaker at 35° C. for 12 hours to obtain the seed culture solutions of the three bacteria respectively;

[0054] B. Mix the seed culture solutions of the three bacteria in proportion, inoculate them into the fermentation medium at a volume ratio of 12%, and ferment on a shaking table at 35°C and nitrogen to obtain the active strain culture solution; the Geotrichum candidum, Portugal The inoculum ratio of Corynesporium and Pichia membranii was 230:12:60.

[0055] C, get active strain culture fluid 160ml, pack in the 500 milliliter conical flask, add 64 gram hydroxy polyethers and 26.2 gram monoiodopentane in the culture fluid, bottle mouth is sealed with gauze. The initial concentration of the m...

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Abstract

The invention discloses a preparation method of bio-based end-capped polyether, which comprises the following steps: mixing and fermenting geotrichum candidum, corynespora aspera and pichia membranaefaciens in a fermentation culture medium taking hydroxyl-containing polyether as a substrate, and finally preparing the end-capped polyether through the action with an end-capping reagent, the preservation number of the geotrichum candidum is CCTCC No.M2013114; the preservation number of the corynespora aspera is CCTCC No.M205116; and the preservation number of the pichia membranaefaciens is CCTCC No.M205117. The method provided by the invention is simple and economical, can generate terminated polyether in one step, and is beneficial to continuous production.

Description

technical field [0001] The invention belongs to the technical field of biochemical industry and relates to a preparation method of bio-based end-capped polyether. Background technique [0002] Polyether polyol (referred to as polyether) is polymerized from alkylene oxide. Since the polyether structure has a multi-ether bond structure, the apparent performance is reflected in the adjustable viscosity, low toxicity, excellent detergency, and high viscosity index. The polyether end group prepared directly from alkylene oxide generally contains hydroxyl groups, and the presence of hydroxyl groups makes it easy to be oxidized, thus limiting its application. [0003] At present, the commonly used method is to cap the hydroxyl group with a haloalkyl reagent or a carboxylic acid to form an ether bond or an ester bond. For example: Ray et al. (DOI: 10.1007 / s00289-018-2661-y) used p-toluenesulfonic acid to link dicarboxylic acid in the polyether chain to prepare esterified end-cappe...

Claims

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Application Information

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IPC IPC(8): C12P39/00C12P7/00C12N1/16C12N1/14C12R1/84C12R1/645
CPCC12P39/00C12P7/00C12N1/16C12N1/14
Inventor 程亮张杰
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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