Defoaming agent composition and preparation method thereof

A composition and defoamer technology, applied in chemical instruments and methods, chemical/physical processes, dissolution, etc., can solve the problems of low surface tension, low surface energy, strong hydrophobicity, etc., and achieve strong defoaming effect and surface Low tension and good adaptability
CN101053801AInactive Publication Date: 2007-10-17SHENZHEN OCEAN POWER INDUSTRIAL CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
Publication Date
2007-10-17
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention discloses a polyether modified silicone defoaming agent combination, of which mass fraction is 40-75 of A, 10-55 of B, 0.5-2 of C and 1-5 of D, wherein A and B are the key component, C and D are the secondary component, A is polyether modified silicone defoaming agent, B is defoaming agent of other kinds, C is thickening agent, and D is emulsifying agent. The also discloses the preparation method of the defoaming agent combination. The defoaming agent combination of the invention has the character of polysiloxanes defoaming agent, of which the defoaming capability is high, and surface tension and volatility are low, and which is innocuity, nonpollution and physiologically inert. The defoaming agent combination also has the character of high temperature resistant and alkaliproof like polyethers defoaming agent, and has the advantage of long lasting defoaming agent, defoaming restrain, low incorporaticn and good adaptability. The performance and price ratio is high. It has a better effect when used in stretch thick dope.
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Description

【Technical field】

[0001] The invention relates to a high-performance water-based defoamer composition for architectural coatings and a preparation method thereof, more specifically, the present invention relates to a high-performance water-based polyether modified silicone defoamer used in elastic thick coatings Compositions and methods for their preparation. 【Background technique】

[0002] The foam problem in the paint industry has many damages to production, construction and coating film quality: foam hinders the dispersion of pigments and fillers, which brings great inconvenience to production operations; due to the existence of foam, packaging needs to be divided into batches Filling can only be filled, which reduces production capacity; in addition, the existence of air bubbles often causes defects on the surface of the coating film, such as "fish eyes" (protruding air bubbles) or pits that appear after the bubbles burst. The appearance of the surface coating will be d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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