Water-based organic polysiloxane-containing compositions, proces

Details Water-based organic polysiloxane-containing compositions, proces Water-based organic polysiloxane-containing compositions, proces

1995-12-08

1997-10-21

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Silicon containing other than solely as silicon dioxide or...

C09D18308

Patent

active

056791470

ABSTRACT:
Water-based organopolysiloxane-containing compositions which are essentially free from organic solvents, have a flashpoint above 80.degree. C., and essentially liberate no alcohols by hydrolysis on dilution with water are obtainable by mixing water-soluble aminoalkylalkoxysilanes with alkyltrialkoxysilanes and/or dialkyldialkoxysilanes and/or mixtures of alkyltrialkoxysilanes and dialkyldialkoxysilanes which are not water-soluble, adding water to the mixture, adjusting the pH of the reaction mixture to a value of between 1 and 8 and removing any alcohol already present and/or formed during the reaction. Such compositions are especially useful for hydrophobicizing the surface of building materials such as brick, concrete, lime sand brick, and mortar.

REFERENCES:
patent: 4620878 (1986-11-01), Gee
patent: 5073195 (1991-12-01), Cuthbert et al.

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