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Lubricant for papermaking and its preparation method and application

A technology of lubricants and initiators, applied in the field of lubricants for papermaking, which can solve problems such as complex processes

Active Publication Date: 2015-11-25
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is limited to the emulsion prepared by several emulsifiers and polyethylene wax, and the process is complicated

Method used

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  • Lubricant for papermaking and its preparation method and application
  • Lubricant for papermaking and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Synthesis of water-soluble lubricants:

[0030] a. Mix 20g of acrylic acid and 0.09g of di-tert-butyl peroxide evenly, set aside;

[0031] b, 2g isomerism alcohol polyoxyethylene ether (C 8 h 17 O-(C 2 h 4 O) 8 H), mix 10g sodium hydroxide, 5g sodium phosphite and 319.9g deionized water, heat up to 90°C and keep it warm, and set aside;

[0032] c. Mix 100g of polyethylene wax (weight average molecular weight: 500g / mol) and 0.01g of di-tert-butyl peroxide, stir evenly, heat up to 120°C, then add the mixture in step a dropwise at this temperature, drop Add time for 1 hour; keep warm at 120°C for 1 hour; then add the mixture in step b, continue stirring for 10-20 minutes, and mix well;

[0033] d. Cool down to 20°C, continue to stir for 10 minutes, and filter the material through a 100-mesh sieve.

[0034] The obtained water-soluble lubricant has a weight solid content of 30.12wt%, a viscosity of 126mPa.s (measured by NDJ-1 rotational viscometer), and pH=7.07 (measu...

Embodiment 2

[0036] Synthesis of water-soluble lubricants:

[0037] a. Mix 80 g of acrylic acid, 2 g of tert-butyl peroxybenzoate, and 1.2 g of tert-butyl peroxy-3,5,5-trimethylhexanoate, and set aside;

[0038] b, 20g of isomeric alcohol polyoxyethylene ether (C 13 h 27 O-(C 2 h 4 O) 20 H), mix 20g diethanolamine, 20g potassium hydroxide, 20g sodium phosphite and 2377.8g deionized water, heat up to 100°C and keep it warm, set aside;

[0039] c. Mix 100g of polyethylene wax (weight average molecular weight: 3000g / mol) and 0.8g of tert-butyl peroxybenzoate, stir evenly, raise the temperature to 140°C, then add the mixture in step a dropwise at this temperature, drop Add time for 3 hours; keep warm at 140°C for 3 hours; then add the mixture in step b, continue to stir for 10-20 minutes, and mix well.

[0040] d. Cool down to 40°C, add 0.05g bronopol, 0.1g 5-chloro-2-methyl-4-isothiazolin-3-one, 0.05g 2-methyl-4-isothiazolin-3-one, continue Stir for 10 minutes, and filter the material ...

Embodiment 3

[0043] Synthesis of water-soluble lubricants:

[0044] a. Mix 40g of acrylic acid, 0.8g of di-tert-butyl peroxide, and 0.9g of tert-butyl peroxy-3,5,5-trimethylhexanoate, and set aside;

[0045] b, 10g of isomeric alcohol polyoxyethylene ether (C 11 h 23 O-(C 2 h 4 O) 10 H), mix 10g of triethanolamine, 12g of triethylenediamine, 16g of sodium phosphite and 764g of deionized water, heat up to 100°C and keep it warm for later use;

[0046] c. Mix 100g of polyethylene wax (weight average molecular weight: 1000g / mol) and 0.3g of tert-butyl peroxy-3,5,5-trimethylhexanoate, stir evenly, heat up to 130°C, and then Add the mixture in step a dropwise for 2 hours; keep warm at 130°C for 2 hours; then add the mixture in step b, continue stirring for 10-20 minutes, and mix well.

[0047] d. Cool down to 25°C, add 0.07g 5-chloro-2-methyl-4-isothiazolin-3-one and 0.05g 2-methyl-4-isothiazolin-3-one, continue stirring for 10 minutes, and use 100 Mesh screen to filter out the material....

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Abstract

The invention discloses a preparation method of a lubricant for papermaking. Specifically, acrylic acid, polyethylene wax, sodium phosphite, isomeric alcohol polyoxyethylene ether, an initiator, an alkali and water are mixed to undergo a polymerization reaction. The product is applied in papermaking coatings of coated paper, and can significantly improve the surface smoothness and glossiness of paper.

Description

technical field [0001] The invention relates to a lubricant for papermaking, which is used as a papermaking coating for coated paper. Background technique [0002] Lubricants in papermaking coatings can reduce the friction coefficient of the coating, improve the rheology of the coating, and then improve the smoothness of the coating and the gloss of the finished paper. Lubricants for papermaking currently on the market are mainly high-grade fatty acid salts and high-molecular oxidized polyethylene, and also include wax emulsions, etc., all of which can improve the friction coefficient of the coating. [0003] Chinese patent CN1584204A discloses a process for preparing a special lubricant for papermaking and coating with polyethylene wax as the main raw material. This invention is limited to the emulsion prepared by several emulsifiers and polyethylene wax, and the process is complex. Contents of the invention [0004] The technical problem to be solved by the present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/14
Inventor 施晓旦尹东华王养臣
Owner SHANGHAI DONGSHENG NEW MATERIALS
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