DETAILED DESCRIPTION We claim: 1.
Aqueous composition for the coating of glass fibers, characterized in that it comprises: 0.
5 to 15% in weight of at least one starch, 0.
05 to 5% of non-ionic lubricant, 0.
03 to 2% of cationic lubricant, 0.
02 to 1% of emulsifier, 0.
1 to 2% of at least one organo silane selected from the group consisting of ##STR11## in which: x/y is 0.
5 to 15; n is 2 to 6, R is a methoxy, ethoxy, propoxy, n-butoxy or .
beta.
-methoxyethoxy radical, R.
sub.
1 and R.
sub.
3 are alkylene divalent radicals containing 1 to 3 carbon atoms, and R.
sub.
2 represents a substituted or non-substituted cycloaliphatic or aromatic, aliphatic divalent radical; or ##STR12## in which: n is 2 to 6, preferably n=2 or 3 m is 1 to 10, preferably m is 1 to 4 R is a methoxy, ethoxy, propoxy, n-butoxy or .
beta.
-methoxyethoxy radical.
2.
Aqueous sizing for the coating of glass fibers according to claim 1, characterized in that it contains up to 7% of supplementary film forming materials and/or up to 1% of another organo-silane.
3.
Aqueous sizing according to claim 1, characterized in that it comprises: 0.
5 to 10% in weight of modified starch, 0.
1 to 5% of acrylic polymer, 1 to 5% of emulsified, non-ionic lubricant(s), 0.
2 to 2% of polyethylene wax, 0.
03 to 0.
6% of a cationic emulsifier for polyethylene wax, 0.
1 to 2% of the organo-silane.
4.
Aqueous sizing according to claim 1, characterized in that the at least one organo-silane is selected from the general formulas II and IV.
5.
Aqueous sizing for coating glass fibers according to claim 1, characterized in that it contains at least one of the organo-silanes of the following formulas: ##STR13## in which n equals 2 or 3, m is 1 to 4.
6.
Aqueous composition for the coating of glass fibers according to claim 1, characterized in that it contains at least one organo-silane of the general formulas: ##STR14## in which n is 2 to 6, m is 1 to 10, R is a methoxy, ethoxy, propoxy, n-butoxy or .
beta.
-methoxyethoxy radical, ##STR15## in which: m is 1 to 10, R is a methoxy, ethoxy, propoxy, n-butoxy or
|
Molecular Biology 
