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SYLOBLOC® 25B
SYLOBLOC® 25B is a silica antiblocking agent with intermediate pore volume, a small particle size, and excellent optical properties for thin clear films.
Documents
- Manufacturer: Grace
- Product Line: SYLOBLOC® Silicas
- Product: SYLOBLOC® Antiblocking Agents
- Industries: Plastics
- Authorized Countries: Canada | United States
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Authorized Countries
Canada
United States
Overview
SYLOBLOC® 25B is a synthetic amorphous silica antiblocking agent supplied as a free-flowing powder with intermediate pore volume and among the SYLOBLOC® grades with the smallest particle sizes. SYLOBLOC® 25B is very easy to disperse in masterbatches used to make LLDPE, BOPP, and IPP plastic films. Given that it is purposefully manufactured silica, specifications are tightly controlled and impurities are low. This makes SYLOBLOC® 25B a very efficient antiblocking aid. SYLOBLOC® 25B also possesses excellent optical clarity, preventing compromise to the visual quality and clarity of films it is used in. Although it is used as an antiblocking agent, SYLOBLOC® 25B also helps provide improvements to slip on films. Since it has a relatively small particle size, it is recommended for films less than 20 µm thick. Typical applications for films using SYLOBLOC® 25B include food packaging, greenhouse and silage wraps, and capacitor films.
Specifications
Moisture at 160°C, % max: 2.0
Average particle size via Malvern Mastersizer, µm: 2.4–3.2
Wet screen residue > 25 µm, max %: 0.01
pH of 5% aqueous suspension: 4.5–6.5
SiO2 content, % min: 99.0
Primary Chemistry: Synthetic amorphous silica
Features & Benefits
- Intermediate pore volume
- Small particle size
- Good antiblocking performance
- Easy to disperse
- Excellent optical properties
- Low dusting and inert, poses low health risks
Problems Solved
Blocking of films during storage, processing, and transport Poor optical properties of transparent films using antiblocking agents Issues with dispersion of antiblocking agents
Applications
Food packaging films Agricultural films Industrial films
Related Chemistries
Plastics
Related Functions
Plastics
Related Processes
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