Name: Ramasa CONTRAPEN-PR 200 Defoamer
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Ramasa CONTRAPEN-PR 200 Defoamer

High-efficiency silicone-based defoaming agent with rapid knock-down and long-term foam suppression.
Excellent compatibility with water-based systems including acrylic, vinyl acetate, and styrene-butadiene emulsions.
Low dosage requirement—effective at 0.05–0.3% w/w in most polymerization and coating processes.
Thermally stable up to 120°C, maintaining performance under elevated process temperatures.
Non-yellowing and non-silicone-residue-forming, ensuring clarity and adhesion integrity in final coatings.

Typical Applications Of Ramasa CONTRAPEN-PR 200 Defoamer

Chemical Type	Silicone-polyether copolymer dispersion
Product Form	White to off-white opaque liquid
Appearance	Homogeneous, slightly viscous liquid
pH (1% aqueous dilution)	6.0–7.5
Density (at 25°C)	1.01–1.04 g/cm³
Viscosity (Brookfield, #2 spindle, 20 rpm, 25°C)	1,200–2,500 mPa·s
Primary Applications	Water-based emulsion polymerization & coatings
Key Features	Rapid foam collapse, low surface tension, non-ionic character

Get in Touch with ERICW

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Contact With Us:

E-mail: wangxingqiang@ericwchem.com
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15921782326
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China