Heat-sealable waterproof and oil-proof acrylic emulsion

An acrylic emulsion, waterproof and oil-proof technology, applied in the field of coatings, can solve the problems of poor oil-proof performance of polylactic acid, limited promotion, high cost, etc., to achieve the effect of promoting waterproof and oil-proof, ultra-fine emulsion particle size, and improve water resistance and oil resistance effects

Pending Publication Date: 2022-06-03
浙江莱科新材料科技有限公司
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Problems solved by technology

However, polylactic acid is produced from organic lactic acid, which is very expensive in itself, and the oil-proof performance of poly

Method used

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  • Heat-sealable waterproof and oil-proof acrylic emulsion
  • Heat-sealable waterproof and oil-proof acrylic emulsion

Examples

Experimental program
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Example

[0030] The synthesis technique of embodiment 1~embodiment 5, comparative example is:

[0031] (1) Preparation of core pre-emulsion: add deionized water 1, emulsifier 1 (OP-10 is used as emulsifier in the comparative example), acrylic monomer, silicone monomer, cross-linking monomer and ferrous sulfate into the beaker in turn 1. Emulsify at 700 rpm for 30 minutes to obtain a core pre-emulsion;

[0032] (2) Preparation of shell pre-emulsion: add deionized water 2, emulsifier 2 (OP-10 is used as emulsifier in the comparative example), soft monomer, hard monomer, functional monomer and ferrous sulfate 2 into the beaker in turn, Emulsify at 700rpm for 30 minutes to obtain shell pre-emulsion;

[0033] (3) 200g of water was added to the four-necked flask, the stirring was turned on, and the rotating speed was 200rpm, and heated to 65°C;

[0034] (4) dropwise addition of core pre-emulsion and hydrogen peroxide 1: start to dropwise add core pre-emulsion and hydrogen peroxide 1 at the...

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Abstract

The heat-sealable waterproof and oil-proof acrylic emulsion is prepared in an emulsion polymerization manner, the acrylic emulsion has a core-shell structure, the main component of a core polymer is high-Tg organosilicon modified polyacrylate, and Tg is 15-40 DEG C; the shell is composed of polyacrylate with low Tg, and the Tg ranges from-10 DEG C to 10 DEG C. According to the heat-sealable waterproof and oil-proof acrylic emulsion disclosed by the invention, an amphiphilic organic silicon block copolymer is used as an emulsifier, and hydrogen peroxide/ferrous sulfate is used as an initiator in the reaction process of the acrylic emulsion. The acrylic emulsion disclosed by the invention is fluoride-free, plastic-free and APEO-free, has excellent oil-proof and water-proof functions, and is good in heat sealing effect. The method can be used for paper, non-woven fabrics, films and the like.

Description

technical field [0001] The invention relates to the technical field of coatings, and more particularly to a heat-sealable waterproof and oil-proof acrylic emulsion. Background technique [0002] Polyethylene plastic bags are consumables in daily life, and China consumes a lot of plastic bags every year. While it provides convenience for consumers, it also causes serious waste of resources and environmental pollution due to excessive use and inadequate recycling. In particular, ultra-thin plastic shopping bags are easily damaged, and most of them are discarded at will, becoming "white pollution" "The main source. More and more countries and regions have restricted the production, sale and use of plastic shopping bags. Paper materials have the characteristics of environmental protection, recycling and cost saving. With the increasing environmental protection requirements of packaging materials, paper packaging materials will become the preferred packaging materials in the fu...

Claims

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Application Information

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IPC IPC(8): C08F265/06C08F220/18C08F220/14C08F220/06C08F222/02C08F220/20C08F220/56C08F2/30C08F4/40C09D151/00
CPCC08F265/06C08F2/30C08F4/40C09D151/003C08F220/1818C08F220/1812C08F220/1802C08F220/1803C08F220/1804C08F220/1808C08F220/14C08F220/1806C08F220/1811C08F220/06C08F222/02C08F220/20C08F220/56C08F2500/26Y02W30/80
Inventor 韩守臣尹传猛
Owner 浙江莱科新材料科技有限公司
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