Page 139 - Handbook of Adhesion Promoters

132 Properties of Adhesion Promoters

ICAO/IATA class: Dangerous Goods, (Tetraethyl silicate solution) 3,III
LD50, dermal rabbit, mg/kg: no skin irritation
3
LC50 inhalation, rat, mg/m : >168000/4H/female/tetraethyl silicate, >10000/4H/male/tetraethyl
silicate
Hazardous combustion products: carbon oxides, SiO , formaldehyde
x
UN/NA class: 1292 Mutagenicity: negative
3
NIOSH, ppm: ST250/methanol NIOSH REL, mg/m : ST325/methanol
ACGIH, ppm: 200/methanol
3
OSHA, ppm: 200/methanol OSHA PEL, mg/m : 260/methanol
ENVIRONMENTAL IMPACT
EC50, Daphnia magna, 48h, mg/l: >75/tetraethyl silicate
Biodegradation probability: 98.00%/28d/tetraethyl silicate/readily biodegradable
USE
Manufacturer: Wacker Chemie AG
Outstanding properties: improved the adhesion between the organic polymer and the inorganic
fillers. This imparts significantly improved flexural strength and impact strength to the composites.
It also reduces water absorption and dirt pick-up significantly. Geniosil CS 2 also liberates about
50% less methanol than the conventional adhesion promoters.
Recommended applications: acts as a coupling agent by forming a chemical bonding between the
organic resin and the inorganic fillers or pigments used, e.g. quartz, granite or even glass.
Typical dose: 1.00-3.00 % added to the organic resin along with conventional additives
Conditions to avoid: contact with moisture must be avoided during processing to prevent unde-
sired hydrolysis

7.28 SILANE+TITANATE

GENERAL INFORMATION
Name: Dow Corning P5200 CAS #: 107-51-7, 18407-95-9, 5593-70-4; 142-82-5, 2768-02-7,
and PR-2260 5593-70-4