Method for improving composite materials by use of a silane coup

Details Method for improving composite materials by use of a silane coup Method for improving composite materials by use of a silane coup

1988-08-15

1990-07-24

Morgenstern, Norman

Coating processes

With pretreatment of the base

427387, 4274072, 4274073, 428428, B05D 300, B05D 136, B05D 700

Patent

active

049434527

ABSTRACT:
A novel silane coupling agent is proposed for the pretreatment of a glass fiber-based or mica flake-based inorganic reinforcing material prior to compounding with an epoxy resin or a polyimide resin as the matrix to give a composite material such as laminates having excellent heat resistance against molten solder alloy and resistance against heat shock. The principal ingredient of the treatment solution is a trialkoxysilylalkyl-substituted polymethylene diamine compound of the general formula (R.sup.1 O).sub.3 SiR.sup.2 NH(CH.sub.2).sub.n NHCH.sub.2 C.sub.6 H.sub.5, in which R.sup.1 is a methyl or ethyl group, R.sup.2 is a diavalent hydrocarbon group having 1 to 6 carbon atoms, e.g., methylene and propylene, and n is a integer of 4 to 8, or a hydrochloride thereof. This diamine compound is soluble in water, in particular, acidified with acetic acid and the aqueous solution is advantageouly stable in storage as compared with conventional silane coupling agents.

REFERENCES:
Union Carbide Catalog (1970 edition) "Chemicals and Plastics Physical Properties".
Paul et al. "Silicon-nitrogen compounds. IV. Synthesis of some N-alkoxysilyl-N'-phenylhydrazines" Indian J. Chem. 13(1) 76-77 (1975).
Goelitz et al "2,5-Diaza-3-silacyclopentanones" Ger. Offen. DE 1954447, May 6, 1971 P10.

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