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Production of stable hydrolyzable organosilane solutions

  • US 5,411,585 A
  • Filed: 06/30/1994
  • Issued: 05/02/1995
  • Est. Priority Date: 02/15/1991
  • Status: Expired due to Term
First Claim
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1. A method of improving the storage stability and broadening the pH stability of an aqueous solution containing from about 0.001% to 5% by weight of a water soluble organosilane of the formula


  • space="preserve" listing-type="equation">A.sub.3-x B.sub.x SiD
provided that the organosilane forms a clear solution in water at 25°

C. at the intended level of use, which method comprises including within the solutiona. from about 0.05% to 10% by weight of the total aqueous solution of a water soluble organic quaternary ammonium compound which is free of silicon atoms and contains at least one nitrogen-bonded hydrocarbon group of at least 8 carbons andb. from about 0.5% to 30% by weight of the total aqueous solution of at least one surfactant selected from the group consisting of nonionic, amphoteric, sarcosine anionic, and cationic surfactants other than the compounds of (a);

wherein the amounts of (a) and (b) present are effective to improve the storage stability of and to broaden the pH stability of the resulting solution and eachA is --OH or a hydrolyzable group,B is an alkyl group of from 1 to 4 carbon atoms,x has a value of 0, 1 or 2, andD is a hydrocarbon group of from 1 to 4 carbon atoms, phenyl, or a nonionic or cationic, substituted-hydrocarbon group containing at least one oxygen or nitrogen group or salts of such substituted-hydrocarbon groups.

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