Disilane/organosilicon resin having enhanced thermomechanical properties

摘要

Novel high performance disilane/organosilicon resins useful, e. g., as molding powders and textile and building waterproofing agents (either in the form of aqueous dispersions or organic solutions thereof), comprise cohydrolysis/condensation reaction products in heterogeneous solvent medium of admixture of organochlorosilanes and organochlorodisilanes, said admixture comprising:PP(i) from about 10 to 70 molar % of at least one diorganochlorosilane having the formula R.sub.2 SiCl. sub.2, in which the radicals R, which may be identical or different, are each hydrogen, methyl or phenyl;P P(ii) from about 30 to 70 molar % of at least one methylchlorodisilane which comprises at least about 30 moles % of tetrachloro-1,2-dimethyldisilane; andP P(iii) from 0 to about 60 molar % of at least one organotrichlorosilane having the formula R'SiCl.sub.3, in which R' is defined as is R above;PPand said resins having an average functionality of from about 2.2 to 3.