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Novel rheological thickening water-retaining agent for papermaking, and preparation method and application thereof

A thickening and water-retaining agent, a new type of technology, used in papermaking, textiles, papermaking, paper coatings, etc., can solve the problems of insufficient thickening effect of coatings, inability to synergize water retention and thickening properties, and achieve good thickening effect. , Improve the water retention effect, the effect of small molecular weight distribution

Active Publication Date: 2020-11-20
ZHEJIANG JIUBEN BIOCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional rheological thickening and water-retaining agent does not have an obvious viscosifying effect on the coating, and is affected by factors such as solid content and pH value, so that the water retention and thickening performance of the product cannot be synergistically effective. Therefore, the present invention proposes a A kind of preparation method of novel rheological thickening water-retaining agent for papermaking

Method used

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  • Novel rheological thickening water-retaining agent for papermaking, and preparation method and application thereof
  • Novel rheological thickening water-retaining agent for papermaking, and preparation method and application thereof
  • Novel rheological thickening water-retaining agent for papermaking, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add 100 parts of water, 5 parts of 2-acrylamide-2-methylpropanesulfonic acid and 2 parts of emulsifier into the pre-emulsifier, stir and dissolve, then add 15 parts of acrylic acid, 20 parts of Methacrylic acid, 40 parts of ethyl acrylate, 15 parts of butyl methacrylate, stirred at a stirring rate of 600r / min for 15-30min to prepare a pre-emulsion;

[0031] (2) Add 125 parts of water and 1 part of emulsifier into the reaction kettle and stir for 5-10 minutes, and after raising the temperature of the reaction kettle to 70-90°C, add 30 parts of the prepared above-mentioned pre-emulsion, and add 0.8 The aqueous solution of 1 part initiator, wherein 8 parts of water, stirring reaction 10-30min;

[0032] (3) The remaining 167 parts of pre-emulsion in step (1) and the remaining aqueous solution containing 1.2 parts of initiator participate in the polymerization reaction in a dropwise manner, wherein the initiator solution contains 44 parts of water, and the reaction is co...

Embodiment 2

[0035] (1) Add 15 parts of water and 0.2 parts of emulsifier to the pre-emulsifier, and then add 5 parts of acrylic acid, 10 parts of methacrylic acid, 20 parts of ethyl acrylate, 5 parts of butyl acrylate, and 1 part of allyl under stirring conditions Sodium oxyhydroxypropyl sulfonate, stirred at a stirring rate of 600r / min for 15-30min to prepare a pre-emulsion;

[0036] (2) Add 25 parts of water and 0.3 parts of emulsifier into the reaction kettle and stir for 5-10 minutes, and after raising the temperature of the reaction kettle to 70-90°C, add 8 parts of the pre-emulsion in step (1), and add An aqueous solution containing 0.2 parts of initiator, including 2 parts of water, stirred and reacted for 10-30 minutes;

[0037] (3) The remaining 48 parts of pre-emulsion in step (1) and the remaining aqueous solution containing 0.3 initiator participate in the polymerization reaction in a dropwise manner, wherein the initiator solution contains 8 parts of water, and the reaction i...

Embodiment 3

[0040](1) Add 40 parts of water and 1 part of emulsifier to the pre-emulsifier, and then add 5 parts of acrylic acid, 10 parts of methacrylic acid, 20 parts of ethyl acrylate, 5 parts of butyl acrylate, and 1 part of allyl under stirring conditions Sodium oxyhydroxypropyl sulfonate, stirred at a stirring rate of 600r / min for 15-30min to prepare a pre-emulsion;

[0041] (2) Add 60 parts of water and 1 part of emulsifier into the reaction kettle and stir for 5-10 minutes, and after raising the temperature of the reaction kettle to 70-90°C, add 12 parts of the pre-emulsion in step (1), and add the 0.5 parts of initiator aqueous solution, including 6 parts of water, stirred for 10-30 minutes;

[0042] (3) The remaining 70 parts of pre-emulsion in step (1) and the remaining aqueous solution containing 1 part of initiator participate in the polymerization reaction in a dropwise manner, wherein the initiator solution contains 30 parts of water, and the reaction is controlled for 120-...

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Abstract

The invention discloses a novel rheological thickening water-retaining agent for papermaking as well as a preparation method and application thereof. The rheological thickening water-retaining agent comprises following components in parts by weight: 40-225 parts of water, 15-35 parts of an acrylic acid mixed monomer, 25-55 parts of an acrylate mixed monomer and 1.5-8 parts of an additive, and is characterized by further comprising 0.5-5 parts of a modifier and 1-5 parts of a functional monomer. In the papermaking coating application process, the viscosity of a water-based paint can be greatlyincreased, the dosage of the rheological thickening water-retaining agent is small, and the cost for a paper mill is reduced; by adopting a structural design of low molecular weight control and weak rigidity of a main chain, the water retention capacity of the coating can be improved while the viscosity of the coating is greatly increased, the vehicle speed stability is facilitated, and the energyconsumption is reduced; polyvinyl alcohol graft modification is introduced into the system, so that positive thickening and water retention effects can be achieved on the coating system, and therefore, waste discharge is reduced, and an environment-friendly effect is achieved.

Description

technical field [0001] The invention relates to a novel rheological thickening and water retention agent which can be used in the papermaking industry. Background technique [0002] At present, the paper industry is developing at a high speed in the direction of large-scale and mechanization. The production and application of paper-making water-based coatings have also been developed at a high speed, and the research on the rheological thickening and water-retaining agent used in conjunction with it has also been developing rapidly. The rheological thickening and water-retaining agent plays a vital role in the production and processing of water-based coatings for papermaking. It is not only related to the storage stability of the coating, but also related to the water retention of the coating; [0003] Coatings are generally a dispersion system composed of pigments, latex and water. This system can be regarded as a multi-phase system of suspensions. An ideal coating should b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F220/18C08F220/06C08F220/58C08F216/14C08F283/06D21H21/14D21H19/24
CPCC08G81/021C08F220/1802C08F283/065D21H21/14D21H19/24C08F220/06C08F220/1804C08F220/585C08F216/1475
Inventor 郑保健
Owner ZHEJIANG JIUBEN BIOCHEM