Neutral rosin sizing agent and its prepn

A neutral sizing agent and rosin technology, applied in the direction of rosin addition, etc., can solve the problems that it is difficult to achieve emulsification effect, quality stability is difficult to guarantee, emulsion is not easy to emulsify, etc., to ensure the quality of stored products, not easy to reproduce mold, Effect of improving paper quality

Inactive Publication Date: 2003-05-14
上海埃格环保科技有限公司
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its remarkable advantages have attracted the attention of scholars at home and abroad. Japanese patent WO92 / 17645 and European patent EP0537682A1 have disclosed the production technology of neutral sizing agent, but there are also the following deficiencies: (1) the research on the emulsification problem only stays In the research on the type and structure of a single type of emulsifier, the emulsifier used is only a single type of emulsifier, and the emulsion is not easy to emulsify; (2) in the preparation method, high pressure method and solvent method are adopted, and the high pressure method costs too much High, while the solvent method is not only costly but also pollutes the environment
Chinese patent CN1202554A (publication number) discloses a kind of production technology of the improved rosin neutral sizing agent, but still there are following deficiencies: (1) the main agent in its composition only adopts modified rosin resin, then with carbonic acid The compatibility of the calcium filler is not enough, the content of the calcium carbonate filler is allowed to be limited to 5-20%, and the content of the filler in the actual production of papermaking is mostly more than 20%, thereby limiting its scope of use; (2) the sizing agent emulsion is in In the storage process, it is easy to produce the reproduction of mold, thereby affecting the quality of the product; (3) its preparation method is to directly adopt the normal pressure reversal method of producing common dispersed rosin gum, which is not easy to achieve good emulsification effect, and the quality of different batches is different. Stability is difficult to guarantee

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: 30 parts of rosin pentaerythritol fat, 70 parts of maleic rosin resin, 20 parts of tall oil, 10 parts of stearic acid, 90 parts of gum rosin, and 50 parts of paraffin are heated to 150~160 ℃ for melting in the reactor, Introduce nitrogen protection, under the pressure of 0.2 ~ 0.3Mpa, add the mixture of 9.0 parts of dodecylphenol polyoxyethylene ether sulfosuccinate sodium salt and 6.0 parts of potassium abietate while stirring, and complete the addition in 30 minutes. Then, under stirring, add 150 parts of an aqueous solution containing 14 parts of water-soluble protein at about 70-90°C, and then add 200 parts of hot water preheated to 70-90°C to form an oil-in-water emulsion. Finally, cool and add Contain 10 parts of aqueous solution of 0.5 part of chloroquine fungicide, and adjust concentration to 35%.

Embodiment 2

[0036] Embodiment two: 50 parts of fuma rosin resins, 50 parts of rosin glycerides, 40 parts of tall oil, 50 parts of stearic acid, 60 parts of gum rosin, and 30 parts of paraffin are heated to 160~170 ℃ of melting in the reactor, Introduce nitrogen protection, under the pressure of 0.3 ~ 0.5Mpa, add a mixture of 16 parts of nonylphenol polyoxyethylene ether sulfosuccinate sodium salt and 3.0 parts of sodium rosinate while stirring, and complete the addition in 50 minutes, then, Under stirring, add 80 parts of an aqueous solution containing 9 parts of ethylene oxide and propylene oxide block ether at about 70-90 °C, and then add 300 parts of hot water preheated to 80-100 °C to form an oil-in-water emulsion. Finally, after cooling, 10 parts of an aqueous solution containing 1.0 part of ninhydrin fungicide was added to adjust the concentration to 35%.

Embodiment 3

[0037] Embodiment three: 80 parts of rosin phenolic resins, 20 parts of maleic rosin resins, 50 parts of tall oil, 70 parts of stearic acid, 50 parts of gum rosin, and 10 parts of paraffin are heated to 160~170 ℃ of melting in the reactor, Pass nitrogen protection, under the pressure of 0.5 ~ 0.7Mpa, add the mixture of 6 parts of octylphenol polyoxyethylene ether sulfosuccinate sodium salt and 12 parts of potassium abietate while stirring, and complete the addition in 20 minutes, then, Under stirring, add 100 parts of an aqueous solution containing 4 parts of polyvinyl alcohol at a temperature of about 70-90 ° C, and then add 100 parts of hot water preheated to 80-100 ° C to form an oil-in-water emulsion. Finally, cool and add 1.5 parts of polyvinyl alcohol 10 parts of aqueous solutions of s-triazine fungicides, and the concentration is adjusted to 40%.

[0038]The rosin neutral sizing agent produced in the above three examples has good compatibility with calcium carbonate fil...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The rosin sizing agent consists of main components including modified rosin, tall oil, stearic acid, pine gum and paraffin; and supplementary material including polyethenoxy ether sulfo succinate, abietate, polymer dispersant and disinfectant. It is prepared through low pressure process with relatively high controllability and production quality stability. The sizing agent has high compatibility with calcium carbonate stuffing, high sizing effect, low production cost and less mildew produced in storage. The sizing agent is suitable for use in producing high-grade paper and paper card.

Description

Technical field: [0001] The invention relates to a rosin neutral sizing agent and a preparation method thereof, which is a production technology of additives used in papermaking in the paper and cardboard production process. Background technique: [0002] At present, the rosin sizing agent widely used in papermaking in most domestic paper mills can only be used for acid sizing in the range of HP4.5~6.5, and calcium carbonate cannot be used as filler. The paper produced is low in strength and durable. Poor, easy to yellow, brittle. The rosin neutral sizing agent can not only sizing under neutral conditions, improve the quality of paper, but also reduce production costs, reduce pollution, and can overcome the traditional neutral sizing agent AKD is easy to hydrolyze (bringing to the papermaking process) "White pollution"), low friction coefficient and other shortcomings. Its remarkable advantages have attracted the attention of scholars at home and abroad. Japanese patent WO...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/62
Inventor 朱勇强
Owner 上海埃格环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap