Sulfonato-organosilanol compounds and aqueous solutions

Claim 2

An aqueous solution comprising a sulfonato-organosilanol compound having at least one sulfonato-organic substituent, wherein the weight percentage of oxygen in said compound is at least about 30%, and the weight percentage of silicon in said compound is not greater than about 15%, said percentages being taken with reference to the water-free acid form of said compound.

Claim 3

A solution in accordance with claim 1 wherein said sulfonato-organosilanol compound has the formula ##STR23## wherein Q is selected from hydroxyl, alkyl groups containing from 1 to about 4 carbon atoms and alkoxy groups containing from 1 to about 4 carbon atoms; M is selected from hydrogen, alkali metals and organic cations of strong organic bases having a number average molecular weight of less than about 150 and a pK a of greater than about 11; X is an organic linking group; Y is selected from hydrogen, alkaline earth metals, cations of protonated weak bases having an average molecular weight of less than about 200 and a pK a of less than about 11, alkali metals and organic cations of strong organic bases having an average molecular weight of less than about 150 and a pK a of greater than about 11, provided that M is hydrogen when Y is selected from hydrogen, alkaline earth metals and organic cations of said protonated weak base; r is equal to the valence of Y; and n is 1 or 2.

Claim 4

A solution in accordance with claim 2 wherein X is selected from alkylene groups, cycloalkylene groups, alkyl-substituted cycloalkylene groups, hydroxy-substituted alkylene groups, hydroxy-substituted mono-oxa alkylene groups, divalent hydrocarbon groups having mono-oxa backbone substitution, divalent hydrocarbon groups having mono-thia backbone substitution, divalent hydrocarbon groups having monooxo-thia backbone substitution, divalent hydrocarbon groups having dioxo-thia backbone substitution, arylene groups, arylalkylene groups, alkylarylene groups and substitutied alkylarylene groups.

Claim 5

A solution in accordance with claim 3 wherein X is selected from alkylene groups, hydroxy-substituted alkylene groups and hydroxy-substituted mono-oxa alkylene groups.

Claim 6

A solution in accordance with claim 2 wherein said sulfonato-organosilanol compound comprises an organosilanol-sulfonic acid of the formula ##STR24##

Claim 7

A solution in accordance with claim 5 having a pH of less than about 5.

Claim 8

A solution in accordance with claim 5 wherein said organosilanol-sulfonic acid has the formula (HO) 3 SiXCH 2 SO 3 - H + .

Claim 9

A solution in accordance with claim 7, wherein X is --(CH 2 ) m --, where m is an integer of from 1 to about 8.

Claim 10

A solution in accordance with claim 8 wherein m is 1.

Claim 11

A solution in accordance with claim 8 wherein m is 2.

Claim 12

A solution in accordance with claim 7 wherein X is ##STR25##

Claim 13

A solution in accordance with claim 5 wherein said organosilanol-sulfonic acid has the formula ##STR26##

Claim 14

A solution in accordance with claim 12 wherein X is --CH 2 --.

Claim 15

A solution in accordance with claim 5 wherein said organosilanol-sulfonic acid has the formula ##STR27## wherein Q is an alkyl group containing from 1 to about 4 carbon atoms.

Claim 16

A solution in accordance with claim 2 wherein said sulfonato-organosilanol compound comprises an organosilanolate-sulfonic acid salt wherein M and Y are each selected from alkali metals and organic cations of strong organic bases having an average molecular weight of less than about 150 and a pK a of greater than about 11.

Claim 17

A solution in accordance with claim 15 having a pH greater than about 9.

Claim 18

A solution in accordance with claim 15 wherein Q is selected from hydroxyl, alkyl groups containing from 1 to about 4 carbon atoms and alkoxy groups containing from 1 to about 4 carbon atoms, provided that at least one of said Q groups is hydroxyl.

Claim 19

A solution in accordance with claim 15, wherein n is 2 and r is 1.

Claim 20

A solution in accordance with claim 2 wherein said sulfonato-organosilanol compound comprises an organosilanol-sulfonic acid salt wherein M is hydrogen; Q is selected from hydroxyl and alkyl groups of from 1 to about 4 carbon atoms and Y is selected from alkaline earth metals, cations of protonated weak bases having an average molecular weight of less than about 200 and a pKa of less than about 11, alkali metals and cations of strong organic bases having an average molecular weight of less than about 150 and a pKa of greater than about 11.

Claim 21

A solution in accordance with claim 19 having a pH in the range of about 5 to 9.

Claim 22

A solution in accordance with claim 19, wherein Q is hydroxyl.

Claim 23

A solution in accordance with claim 21, wherein n is 2 and r is 1.

Claim 24

A solution in accordance with claim 21 wherein n and r are each 1.

Claim 25

A solution in accordance with claim 1 further comprising a surfactant.

Claim 26

An organosilanol sulfonic acid having the formula ##STR28## wherein Q is selected from hydroxyl, alkyl groups containing from 1 to about 4 carbon atoms and alkoxy groups containing from 1 to about 4 carbon atoms; X is an organic linking group; and n is 1 or 2; wherein the weight percentage of oxygen in said compound is at least about 30%, and the weight percentage of silicon in said compound is not greater than about 15%; said percentages being taken with respect to the water-free acid form of said compound.

Claim 27

An organosilanol sulfonic acid having the formula ##STR28## wherein Q is selected from hydroxyl, alkyl groups containing from 1 to about 4 carbon atoms and alkoxy groups containing from 1 to about 4 carbon atoms; X is an organic linking group; and n is 1 or 2; wherein the weight percentage of oxygen in said compound is at least about 30%, and the weight percentage of silicon in said compound is not greater than about 15%; said percentages being taken with respect to the water-free acid form of said compound.

Claim 28

An organosilanol-sulfonic acid in accordance with claim 25 wherein X is selected from alkylene groups, cycloalkylene groups, alkyl-substituted cycloalkylene groups, hydroxy-substituted alkylene groups, hydroxy-substituted mono-oxa alkylene groups, divalent hydrocarbon groups having mono-oxa backbone substitution, divalent hydrocarbon groups having mono-thia backbone substitution, divalent hydrocarbon groups having mono-oxa thia backbone substitution, divalent hydrocarbon groups having dioxo-thia backbone substitution, arylene groups, arylalkylene groups, alkylarylene groups, and substituted alkylarylene groups.

Claim 29

An organosilanol-sulfonic acid in accordance with claim 26 wherein X is selected from alkylene groups, hydroxy-substituted alkylene groups and hydroxy-substituted mono-oxa alkylene groups.

Claim 30

An organosilanol-sulfonic acid in accordance with claim 25 having the formula (HO) 3 Si--X--CH 2 SO 3 - H + .

Claim 31

An organosilanol sulfonic acid in accordance with claim 28 wherein X is --CH 2 -- m , where m is an integer of from 1 to about 8.

Claim 32

An organosilanol sulfonic acid in accordance with claim 29 wherein m is 1.

Claim 33

An organosilanol sulfonic acid in accordance with claim 29 wherein m is 2.

Claim 34

An organosilanol sulfonic acid in accordance with claim 27 wherein X is ##STR29##

Claim 35

An organosilanol sulfonic acid in accordance with claim 25 having the formula ##STR30##

Claim 36

An organosilanol-sulfonic acid in accordance with claim 33 wherein X is --CH 2 --.

Claim 37

An organosilanolate-sulfonic acid salt having the formula ##STR31## wherein Q is selected from hydroxyl, alkyl groups containing from 1 to about 4 carbon atoms and alkoxy groups containing from 1 to about 4 carbon atoms; Z is selected from alkali metals and cations of strong organic bases having an average molecular weight of less than about 150 and a pK a of greater than about 11; r is equal to the valence of Z; and n is an integer of 1 or 2; wherein the weight percentage of oxygen in said compound is at least about 30%; and the weight percentage of silicon in said compound is not greater than about 15%, said percentages being taken with respect to the water-free acid form of said compound.

Claim 38

An organosilanolate-sulfonic acid salt having the formula ##STR31## wherein Q is selected from hydroxyl, alkyl groups containing from 1 to about 4 carbon atoms and alkoxy groups containing from 1 to about 4 carbon atoms; Z is selected from alkali metals and cations of strong organic bases having an average molecular weight of less than about 150 and a pK a of greater than about 11; r is equal to the valence of Z; and n is an integer of 1 or 2; wherein the weight percentage of oxygen in said compound is at least about 30%; and the weight percentage of silicon in said compound is not greater than about 15%, said percentages being taken with respect to the water-free acid form of said compound.

Claim 39

An organosilanolate-sulfonic acid salt in accordance with claim 35 wherein Z is selected from sodium, potassium, (CH 3 ) 4 N + , and (CH 3 CH 2 ) 4 N + .

Claim 40

An organosilanolate-sulfonic acid salt in accordance with claim 35 wherein n is 2 and r is 1.

Claim 41

An organosilanolate-sulfonic acid salt in accordance with claim 35, wherein n is 1 and r is 1.