Low-fluoride-silicon waterborne polyurethane emulsion and elastic film product thereof

A technology of water-based polyurethane and fluorosilicone, which is applied in water-based polyurethane emulsion and its application field, can solve the problems of complex preparation process, harsh synthesis conditions, and undiscovered performance, and achieve good smoothness, good compactness, and solve the problem of water-soluble protein Sensitization effect

Active Publication Date: 2019-05-31
四川尤博瑞新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of fluorine-containing raw materials is generally complicated, the synthesis conditions are harsh, and the price is expensive.
[0009] Organic fluorine and silicone have their own advantages and disadvantages in the modification of water-based polyurethane, but there is no report on the introduction of fluorine and silicon into polyurethane materials to improve its performance.

Method used

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  • Low-fluoride-silicon waterborne polyurethane emulsion and elastic film product thereof
  • Low-fluoride-silicon waterborne polyurethane emulsion and elastic film product thereof
  • Low-fluoride-silicon waterborne polyurethane emulsion and elastic film product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A low-fluorine silicone water-based polyurethane emulsion, which is polymerized and emulsified by the following components in terms of solid mass percentage: 23.2% diisocyanate, 64.0% polymer diol, 6.2% polysiloxane diol, fluorine-containing chain extension Agent 0.6%, chain extender I 2.6%, hydrophilic chain extender 2.0%, crosslinking agent 0.2%, neutralizer 1.2%;

[0035] Wherein, the diisocyanate is isophorone diisocyanate (IPDI) and dicyclohexylmethane diisocyanate (HMDI) (the two are in a mass ratio of 0.89:1), and the polymer diol is polytetrahydrofuran ether diol (PTMG, molecular weight 3000) and polybutylene adipate diol (PBA molecular weight 2000) (the mass ratio of the two is 2.25:1); polydimethylsiloxane is dimethylsiloxane with active end groups, The end group of siloxane is connected with the active terminal hydroxyl group through the ester carbon chain, and its molecular weight is 2500; Fluorocarbon chain; chain extender I is 1,4-butanediol (BDO); ​​hydr...

Embodiment 2

[0038] A low-fluorine silicone water-based polyurethane emulsion, which is polymerized and emulsified by the following components in terms of solid mass percentage: 20.4% diisocyanate, 71% polymer diol, 0.2% polysiloxane diol, fluorine-containing chain extension Agent 1.0%, chain extender I 2.1%, hydrophilic chain extender 2.0%, crosslinking agent 1.3%, neutralizer 2.0%;

[0039] Among them, the diisocyanate is isophorone diisocyanate (IPDI); the polymer diol is polytetrahydrofuran ether diol (PTMG, molecular weight 3000); the polysiloxane diol is dimethylsiloxane with active end groups. alkane, the siloxane end group is connected to the active terminal hydroxyl group through a carbon chain, and its molecular weight is 1000; the fluorine-containing chain extender is a diamine with a fluorine-containing carbon segment in the side chain, and the fluorocarbon chain in the side chain is 7 carbons Perfluorocarbon chain; chain extender I is propylene glycol; hydrophilic chain extend...

Embodiment 3

[0042] A low-fluorine silicone water-based polyurethane emulsion, based on solid mass percentage, is polymerized and emulsified from the following components: 19.2% diisocyanate, 68.9% polymer diol, 6.4% polysiloxane diol, fluorine-containing chain extension Agent 1.67%, chain extender I 1.13%, hydrophilic chain extender 2.7%, crosslinking agent 0%, neutralizer 0%;

[0043] Among them, the diisocyanate is isophorone diisocyanate (IPDI) and hexamethylene diisocyanate (HDI) (the mass ratio of the two is 6.20:1); the polymer diol is polybutylene adipate di Polyhydric alcohol (PBA molecular weight 2000); polysiloxane diol is dimethyl siloxane with active end group, the siloxane end group is connected with the active terminal hydroxyl group through the ether carbon chain, and its molecular weight is 2500; The chain agent is a diol with a fluorocarbon segment in the side chain, and the fluorocarbon chain in the side chain is a non-perfluorocarbon chain with 5 carbons; the chain exte...

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Abstract

The invention provides low-fluoride-silicon waterborne polyurethane emulsion and an elastic film product thereof, and belongs to the technical field of polyurethane and applications thereof. The low-fluoride-silicon waterborne polyurethane emulsion comprises, in weight, 15-40% of diisocyanate, 40-80% of polymer diol, 0.2-15% of polysiloxane diol, 0.4-5.0% of fluorine-containing chain extenders, 1-5% of chain extenders I, 1-10% of hydrophilic chain extenders, 0-5% of cross-linking agents and 0-10% of neutralizers. The materials are polymerized and emulsified to prepare the emulsion. According to the polyurethane emulsion prepared from the materials, the content of fluoride and silicon is low, and the elastic film product prepared from the polyurethane emulsion is high in strength, good in elasticity, surface property, water resistance and compactness, easy to release, free from toxicity and characteristic odor and not sensitized and can prevent adhesion, effectively isolate various viruses and effectively replace elastic film products such as gloves, organ bags, condoms and penetration bags prepared from natural emulsion.

Description

technical field [0001] The invention belongs to the technical field of water-based polyurethane emulsion and its application, and in particular relates to a low-fluorine silicon water-based polyurethane emulsion and elastic film products thereof. Background technique [0002] Elastic film products such as gloves, organ bags, condoms and osmotic bags are usually prepared by dipping and molding natural latex. Traditional natural latex thin-walled products have high elasticity and good flexibility, and can play a certain barrier role. However, there are natural cracks between 5000-70000 nanometers in the molecular structure of natural latex, which is harmful to viruses with smaller molecular scales. (such as HIV, hepatitis B virus, papillomavirus, etc.) lack of effective blocking ability. And natural latex contains ingredients such as allergic water-soluble protein, and about 8% of people in the crowd are allergic to latex. [0003] Polyurethane materials have high strength, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/08C08G18/32C08G18/34C08G18/40C08G18/42C08G18/44C08G18/48C08G18/61C08J5/18C08L75/04C08L75/06C08L75/08
Inventor 谭鸿李洁华李震叶恒何成生
Owner 四川尤博瑞新材料有限公司
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