Reaction Characteristics of CFS-348 3-(2,3-Epoxypropoxypropyl)triethoxysilane CAS 2602-34-8

In the presence of water, the alkoxy group of CFS-348 [CAS 2602-34-8] is hydrolysed to form a lively silicone hydroxyl group, with the release of ethanol as a by-product of the hydrolysis reaction. This silicone hydroxyl group will be condensed with the hydroxyl group on the surface of various inorganic materials (substrates or face fillers) to form a chemical bond, while its epoxy group can be subjected to heat or the action of acid or alkali catalyst to epoxy ring-opening reaction and chemical reaction with suitable polymers (containing primary amino group, hydroxyl group, carboxyl group, epoxy group, anhydride, etc.), through the above two-way reaction this product can realize the coupling between inorganic fillers (or substrates) and organic polymer materials, and can be used as a base material. The coupling and joining of organic polymer materials is achieved through the above two-way reaction.

The hydrolysis of CFS-348 [CAS 2602-34-8] requires the use of organic acids (e.g. formic acid, acetic acid, etc.) as catalysts. The pH of the water is adjusted to about 4 and the silane is added and stirred for a period of time (at least 15 minutes) until the silane is completely dissolved. The solution is clear and transparent. Its hydrolysate is unstable and it is recommended to use it up within 24 hours. Fogging of the solution indicates that the silane has partially self-polymerised to form a silane polymer (silicone) and failed.

Suitable inorganic materials for CFS-348 [CAS 2602-34-8] include siliceous materials such as glass, glass fibre, glass wool, mineral wool, mica, quartz, etc. and metals and their oxides such as aluminium hydroxide, magnesium hydroxide, kaolin, talc, steel, zinc, aluminium, etc. However, it is basically ineffective on fillers such as calcium carbonate, graphite, carbon black, barium sulphate, etc. which do not contain hydroxyl groups on their surface.

Suitable polymers for this product include (but are not limited to) phenolic, epoxy, urea-formaldehyde, polyurethane, acrylic, polyester, silicone, polysulphide, PVAC and other resins and plastics such as nylon, PBT and PET.

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