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A waterborne polyurethane-acrylate copolymer emulsion and a preparing method thereof

A technology of polyurethane acrylate and copolymer emulsion, which is applied in the chemical industry, can solve the problems of poor compatibility stability, limited flame retardancy, and low solid content, and achieve good flame retardancy and improve heat resistance.

Active Publication Date: 2017-10-24
DONGGUAN CTL NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its cold-mixed vinylidene chloride / acrylate copolymer emulsion contains halogen flame-retardant ingredients, which will produce toxic gases such as dioxin and hydrohalic acid; and the relationship between vinylidene chloride / acrylate copolymer emulsion and polyurethane acrylate copolymer There is a problem of poor compatibility and stability; it only introduces a flame-retardant structure in polyurethane, and its self-flame-retardant performance is limited; in addition, the solid content of the PUA copolymer emulsion is low, and it does not involve the improvement of thermal decomposition performance

Method used

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  • A waterborne polyurethane-acrylate copolymer emulsion and a preparing method thereof
  • A waterborne polyurethane-acrylate copolymer emulsion and a preparing method thereof
  • A waterborne polyurethane-acrylate copolymer emulsion and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] A waterborne polyurethane acrylate copolymer emulsion, which is prepared with the following raw materials:

[0073]

[0074] The preparation method of the above-mentioned aqueous polyurethane acrylate copolymer emulsion includes the following steps:

[0075] (1) Dry the flame-retardant polyol in vacuum at 120°C for 2h, mix it with diisocyanate according to the formula, react at 90°C for 2h, then add a formula amount of chain extender containing acidic groups, and react at 75°C for 1.5 h, obtain polyurethane prepolymer I;

[0076] (2) Reacting the above-mentioned polyurethane prepolymer I with the formulated amount of hydroxy acrylate at 75°C for 45 minutes, then adding the formulated amount of end-capping agent, and reacting at 60°C for 60 minutes to obtain polyurethane prepolymer II;

[0077] (3) Cooling the temperature of the above-mentioned polyurethane prepolymer II to below 40°C, adding a formula amount of neutralizer, neutralizing reaction for 10 minutes, and then adding ...

Embodiment 2

[0081] A waterborne polyurethane acrylate copolymer emulsion, which is prepared with the following raw materials:

[0082]

[0083]

[0084] The preparation method of the above-mentioned aqueous polyurethane acrylate copolymer emulsion includes the following steps:

[0085] (1) The flame-retardant polyol was vacuum dried at 120℃ for 2h, mixed with diisocyanate according to the formula, reacted at 80℃ for 3h, and then added the formula amount of chain extender containing acidic groups, reacted at 60℃ for 3h , Obtain polyurethane prepolymer I;

[0086] (2) The above-mentioned polyurethane prepolymer I is reacted with the formulated amount of hydroxy acrylate at 90°C for 30 minutes, and then the formulated amount of end-capping agent is added, and reacted at 80°C for 30 minutes to obtain polyurethane prepolymer II;

[0087] (3) Cool the above-mentioned polyurethane prepolymer II to below 40°C, add a formula amount of neutralizer, neutralize for 20 minutes, then add a formula amount of ac...

Embodiment 3

[0091] A waterborne polyurethane acrylate copolymer emulsion, which is prepared with the following raw materials:

[0092]

[0093]

[0094] The preparation method of the above-mentioned aqueous polyurethane acrylate copolymer emulsion includes the following steps:

[0095] (1) The flame-retardant polyol was vacuum dried at 120℃ for 2h, mixed with diisocyanate according to the formula, reacted at 70℃ for 4h, then added the formula amount of chain extender containing acidic groups, and reacted at 90℃ for 1.5 h, obtain polyurethane prepolymer I;

[0096] (2) The above-mentioned polyurethane prepolymer I was reacted with the formulated amount of hydroxy acrylate at 60°C for 60 minutes, and then the formulated amount of end-capping agent was added, and reacted at 70°C for 45 minutes to obtain polyurethane prepolymer II;

[0097] (3) Cooling the temperature of the above-mentioned polyurethane prepolymer II to below 40°C, adding a formula amount of neutralizer, neutralizing reaction for 10 ...

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Abstract

A waterborne polyurethane-acrylate copolymer emulsion and a preparing method thereof are disclosed. The emulsion is prepared by preparing a phosphorus containing waterborne polyurethane emulsion containing carbon-carbon double bonds from diisocyanate, a flame-retardant polyol, a non-flame-retardant polyol, a chain extender containing an acidic group, hydroxyl acrylate and an end-capping agent through a chemical grafting method; and then subjecting acrylate, phosphate containing a carbon-carbon double bond, vinyl silicone oil, a vinyl silane coupling agent and an acrylic acid type crosslinking agent which are adopted as raw materials to emulsion polymerization under protection of a phosphate surfactant. The copolymer emulsion has a high solid content, time for drying the copolymer emulsion is short, and a product after the copolymer emulsion is dried has good flame retardance and resistance to thermal decomposition.

Description

Technical field [0001] The invention belongs to the technical field of chemical industry, and specifically relates to a water-based polyurethane acrylate copolymer emulsion and a preparation method thereof. Background technique [0002] Water-based polyurethane (PUD) emulsion and water-based acrylate (PA) emulsion are two types of polymer materials that are currently widely used and have been widely used as base materials for coatings, inks, and adhesives. Among them, PUD emulsion has excellent low-temperature resistance, abrasion resistance and solvent resistance, but has poor stability, low solid content and high cost; the biggest feature of PA emulsion is low cost, high hardness, multiple modification pathways, and solid content. The content is relatively high, but there is an obvious shortcoming of "hot stickiness and cold brittleness". PUD and PA each have their own characteristics. The water-based polyurethane acrylate (PUA) copolymer emulsion formed by copolymerizing...

Claims

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Application Information

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IPC IPC(8): C08F291/12C08F291/06C08F220/18C08F220/14C08F230/02C08G18/76C08G18/75C08G18/69C08G18/67C08G18/66C08G18/50C08G18/44C08G18/46C08G18/42C08G18/34C08G18/12
CPCC08F283/008C08F283/124C08G18/12C08G18/4018C08G18/4277C08G18/44C08G18/4684C08G18/5081C08G18/672C08G18/698C08G18/73C08G18/755C08G18/7614C08G18/765C08G18/7671C08G18/0823C08G18/6692C08G18/6659C08G18/6625C08G18/6576C08F220/1804
Inventor 卢开平朱瑞霆麦伟林卢浩标卢杰宏陈镜宏
Owner DONGGUAN CTL NEW MATERIAL TECH
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