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Antifoaming agent of non-silicone in use for aqueous glue of composite film

A technology of water-based laminating adhesive and defoamer, which is applied in the field of non-organosilicon mineral oil type defoamer to achieve the effect of excellent performance and good foam suppression performance.

Inactive Publication Date: 2007-07-25
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a kind of defoamer preparation method that can well solve the compatibility problem of defoamer and laminating adhesive, and maintain and improve the defoamer's excellent defoamer and antifoam performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 34 parts of white oil with a viscosity of 20mPa.s, 5 parts of defoaming additives (x is 20, y is 50, R 1 is butyl; R 2 (for methyl) and 5 parts of stearic acid amide were added into the reaction flask together, the stirring was started, and the temperature was raised slowly until the temperature rose to 140-150°C, and the temperature was kept for 2 hours. After the heat preservation is over, pour this mixture into 50 parts of liquid wax, the system temperature drops to 70-80°C, and keep it at this temperature for 40 minutes, then when the system temperature drops to 50°C, add 5 parts of emulsifier S-80 to it, Stir evenly to obtain the defoamer A of the present invention.

Embodiment 2

[0022] 50 parts of mechanical oil with a viscosity of 60mPa.s, 3 parts of defoaming additives (x is 8, y is 30, R 1 for H; R 2 Add H) and 5 parts of stearic acid amide into the reaction flask together, start stirring, slowly raise the temperature to 140-150°C, and keep the temperature for 2 hours. After the heat preservation is over, quickly pour this mixture into 37 parts of mechanical oil with a viscosity of 60mPa.s, the temperature of the system drops to 70-80°C, and keep it at this temperature for 40min, and then when the temperature of the system drops to 50°C, add 5 parts of emulsifying oil to it. agent oleic acid polyether, and stir evenly to obtain the defoamer B of the present invention.

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Abstract

This invention discloses a method for preparing an antifoaming agent for aqueous laminated film glue. The antifoaming agent comprises: carrier (mainly mineral oil) 65-90 wt.%, main antifoaming agent (white carbon black, fatty acid metal soap, amide and MQ resin) 1-15 wt.%, auxiliary antifoaming agent (modified polyether, R1O(EO)x (PO)yR2) 2-20 wt.%, and emulsifier (nonionic surfactant with HLB value of 8-10) 3-15 wt.%. The method comprises: (1) stirring the primary antifoaming agent and the auxiliary antifoaming agent in the carrier, heating to 140-150 deg.C, and keeping for 2 h; (2) rapidly cooling to 70-80 deg.C, keeping for 40 min, cooling to 50 deg.C, adding the emulsifier, and stirring uniformly. The antifoaming agent has such advantages as high safely and high performance, and can be used in aqueous laminated film glue, paint, oil ink, coating cloth, etc.

Description

technical field [0001] The invention relates to a water-based defoamer for laminating adhesive and a preparation method thereof. More precisely, a non-organic silicon mineral oil type defoaming agent is invented, which is used in the production of laminating adhesive and can well inhibit the compounding When the film glue is subjected to external shearing, the foam will not affect the performance of the film glue itself. The invention belongs to the category of fine chemical preparations. Background technique [0002] Printed matter lamination is to stick a layer of transparent plastic film on the surface of printed matter, which can improve the surface gloss and strength of printed matter, and is a way to enhance the aesthetic effect; An effective means of class and commodity value. In the process of laminating, in order to bond plastic and paper, in addition to the role of equipment, an adhesive-laminating glue is also used. [0003] The early lamination was called orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/02C08L71/00C08K3/00C08K5/10C08L101/00
Inventor 吴飞孙颖欣曹治平
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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