Hydrolysis resistant organomodified silyated surfactants
Organomodified silylated surfactant compositions that exhibit resistance to hydrolysis over a wide pH range
1 . A composition comprising a silicon containing compound having the formula:
(R 1 )(R 2 )(R 3 )Si—R 4 —Si(R 5 )(R 6 )(R 7 )
wherein
R 1 , R 2 , R 3 , R 5 , and R 6 are each independently selected from the group consisting of 1 to 6 monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 7 to 10 carbons containing an aryl group;
R 4 is a hydrocarbon group of 1 to 3 carbons;
R 7 is an alkyleneoxide group of the general formula:
R 8 (C 2 H 4 O) d (C 3 H 6 O) e (C 4 H 8 O) f R 9
where R 8 is a divalent linear or branched hydrocarbon radical having the structure:
—CH 2 —CH(R 10 )(R 11 ) g O—
where R 10 is H or methyl;
R 11 is a divalent alkyl radical of 1 to 6 carbons where the subscript g is 0 or 1;
R 9 is selected from the group consisting of H, monovalent hydrocarbon radicals of 1 to 6 carbon atoms and acetyl, subject to the limitation that the subscripts d, e and f are zero or positive and satisfy the following relationships:
2≦ d+e+f≦ 20 with d≦2.
2 . The composition of claim 1 where R 1 , R 2 , R 3 , R 5 , and R 6 are methyl.
3 . The composition of claim 2 where R 10 is hydrogen.
4 . The composition of claim 3 where the subscript g is zero.
5 . The composition of claim 3 where the subscript g is one.
6 . The composition of claim 5 where R 11 is —CH 2 —.
7 . The composition of claim 5 where R 11 is a divalent alkyl radical of 2 carbons
8 . The composition of claim 2 where R 10 is methyl.
9 . The composition of claim 8 where the subscript g is zero.
10 . The composition of claim 8 where the subscript g is one.
11 . The composition of claim 10 where R 11 is —CH 2 —.
12 . The composition of claim 10 where R 11 is a divalent alkyl radical of 2 carbons.
13 . A composition comprising a silicon containing compound having the formula:
(R 1 )(R 2 )(R 3 )Si—R 4 —Si(R 5 )(R 6 )(R 7 )
wherein
R 1 , R 2 , R 3 , R 5 , and R 6 are each independently selected from the group consisting of 1 to 6 monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 7 to 10 carbons containing an aryl group;
R 4 is a hydrocarbon group of 1 to 3 carbons;
R 7 is an alkyleneoxide group of the general formula:
R 8 (C 2 H 4 O) d (C 3 H 6 O) e (C 4 H 8 O) f R 9
where R 8 is a divalent linear or branched hydrocarbon radical having the structure:
—CH 2 —CH(R 10 )(R 11 ) g O—
where R 10 is H or methyl;
R 11 is a divalent alkyl radical of 1 to 6 carbons where the subscript g is 0 or 1;
R 9 is selected from the group consisting of H, monovalent hydrocarbon radicals of 1 to 6 carbon atoms and acetyl, subject to the limitation that the subscripts d, e and f are zero or positive and satisfy the following relationships:
2≦ d+e+f≦ 20 with d≧2
wherein said silicon containing compound is resistant to hydrolysis.
14 . The composition of claim 13 where R 1 , R 2 , R 3 , R 5 , and R 6 are methyl.
15 . The composition of claim 14 where R 10 is hydrogen.
16 . The composition of claim 15 where the subscript g is zero.
17 . The composition of claim 15 where the subscript g is one.
18 . The composition of claim 17 where R 11 is —CH 2 —.
19 . The composition of claim 17 where R 11 is a divalent alkyl radical of 2 carbons.
20 . The composition of claim 13 where R 10 is methyl.
21 . The composition of claim 20 where the subscript g is zero.
22 . The composition of claim 20 where the subscript g is one.
23 . The composition of claim 22 where R 11 is —CH 2 —.
24 . The composition of claim 22 where R 11 is a divalent alkyl radical of 2 carbons.
25 . A silane compound having the formula:
(R 1 )(R 2 (R 3 )Si—R 4 —Si(R 5 )(R 6 )(R 7 )
wherein
R 1 , R 2 , R 3 , R 5 , and R 6 are each independently selected from the group consisting of 1 to 6 monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 7 to 10 carbons containing an aryl group;
R 4 is a hydrocarbon group of 1 to 3 carbons;
R 7 is an alkyleneoxide group of the general formula:
R 8 (C 2 H 4 O) d (C 3 H 6 O) e (C 4 H 8 O) f R 9
where R 8 is a divalent linear or branched hydrocarbon radical having the structure:
—CH 2 —CH(R 10 (R 11 ) g O—
where R 10 is H or methyl;
R 11 is a divalent alkyl radical of 1 to 6 carbons where the subscript g is 0 or 1;
R 9 is selected from the group consisting of H, monovalent hydrocarbon radicals of 1 to 6 carbon atoms and acetyl, subject to the limitation that the subscripts d, e and f are zero or positive and satisfy the following relationships:
2≦ d+e+f≦ 20 with d≧2.
26 . The composition of claim 25 where R 1 , R 2 , R 3 , R 5 , and R 6 are methyl.
27 . The composition of claim 26 where R 10 is hydrogen.
28 . The composition of claim 27 where the subscript g is zero.
29 . The composition of claim 27 where the subscript g is one.
30 . The composition of claim 29 where R 11 is —CH 2 -1.
31 . The composition of claim 29 where R 11 is a divalent alkyl radical of 2 carbons.
32 . The composition of claim 26 where R 10 is methyl.
33 . The composition of claim 32 where the subscript g is zero.
34 . The composition of claim 32 where the subscript g is one.
35 . The composition of claim 34 where R 11 is —CH 2 —.
36 . The composition of claim 34 where R 11 is a divalent alkyl radical of 2 carbons.
37 . A silane compound having the formula:
(R 1 (R 2 (R 3 )Si—R 4 —Si(R 5 )(R 6 )(R 7 )
wherein
R 1 , R 2 , R 3 , R 5 , and R 6 are each independently selected from the group consisting of 1 to 6 monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 7 to 10 carbons containing an aryl group;
R 4 is a hydrocarbon group of 1 to 3 carbons;
R 7 is an alkyleneoxide group of the general formula:
R 8 (C 2 H 4 O) d (C 3 H 6 O) e (C 4 H 8 O) f R 9
where R 8 is a divalent linear or branched hydrocarbon radical having the structure:
—CH 2 —CH(R 10 )(R 11 ) g O—
where R 10 is H or methyl;
R 11 is a divalent alkyl radical of 1 to 6 carbons where the subscript g is 0 or 1;
R 9 is selected from the group consisting of H, monovalent hydrocarbon radicals of 1 to 6 carbon atoms and acetyl, subject to the limitation that the subscripts d, e and f are zero or positive and satisfy the following relationships:
2≦d+e+f≦20 with d≧2, wherein said silane compound is resistant to hydrolysis.
38 . The composition of claim 37 where R 1 , R 2 , R 3 , R 5 , and R 6 are methyl.
39 . The composition of claim 38 where R 10 is hydrogen.
40 . The composition of claim 39 where the subscript g is zero.
41 . The composition of claim 39 where the subscript g is one.
42 . The composition of claim 41 where R 11 is —CH 2 —.
43 . The composition of claim 41 where R 11 is a divalent alkyl radical of 2 carbons.
44 . The composition of claim 38 where R 10 is methyl.
45 . The composition of claim 44 where the subscript g is zero.
46 . The composition of claim 44 where the subscript g is one.
47 . The composition of claim 46 where R 11 is —CH 2 —.
48 . The composition of claim 46 where R 11 is a divalent alkyl radical of 2 carbons.