High solid content aqueous polyurethane and preparation method thereof
A technology of water-based polyurethane with high solid content, applied in the field of resin, can solve the problems of high water quality requirements, achieve obvious environmental protection advantages, save transportation costs, and have excellent ionic properties
Inactive Publication Date: 2007-10-24
GUANGDONG YINYANG ENVIRONMENT FRIENDLY NEW MATERIALS CO LTD
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
However, its use requires high water quality, and its adaptability needs to be further improved.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0010] The production formula of this high-solid-content water-based polyurethane consists of the following component proportions (parts by weight): 50 parts of toluene diisocyanate, 95 parts of polycarbonate, 5 parts of neopentyl glycol, and 20 parts of sodium aryl sulfonate polyester polyol part, 100 parts of water.
[0011] project
[0012] It can be seen that this product has the advantages of environmental protection, fast drying, good adaptability, low cost and high solid content, and its preparation has low energy consumption and high production efficiency.
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The invention discloses a highly solid aqueous polyurethane, which comprises the following steps: 45-50g toluene diisocyanate, 90-100g polycarbonate, 3-5g neopentyl glycol, 20-30g polyester polyol and 100-120g water. The making method comprises the following steps: adding polycarbonate, neopentyl glycol and toluene diisocyanate; heating to 70 deg. c for 1-1. 5h; heating to 85deg. c for 2-3h; cooling to 65deg. c; adding aryl thiophene sodium polyester polyol; reacting at 60 deg. c for 2-3h; measuring NCO value to reach the prepolymer; adding water in the emulsifying autoclave; stirring under low speed; adding the prepolymer in the emulsifying autoclave to emulsify 3-4h; obtaining the product.
Description
technical field [0001] The present invention relates to a kind of resin, more specifically relates to a kind of waterborne polyurethane with high solid content. Background technique [0002] Water-based polyurethane is a kind of "green material" with excellent performance. The solid content is an important indicator. We know that the solid content is the percentage of the remaining part of the emulsion or paint after drying under specified conditions; it is also called non-volatile matter. Content, solid content is not only film-forming substances, but also fillers, additives, etc. The level of solid content has an important impact on production efficiency, transportation costs, performance and other indicators, and high solid content affects the performance of waterborne polyurethane to a certain extent , Ordinary water-based polyurethane has low multi-solid content, high cost and poor adaptability. Therefore people have been engaged in the research of high solid content w...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08G18/76C08G18/42C08G18/46C08G18/10C08G18/82
Inventor 吕军
Owner GUANGDONG YINYANG ENVIRONMENT FRIENDLY NEW MATERIALS CO LTD
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