Accession Number:

AD0402667

Title:

RAIN REPELLENT

Descriptive Note:

Interim rept. no. 3, 21 Sep-20 Dec 1962

Corporate Author:

SNELL (FOSTER D) INC NEW YORK

Personal Author(s):

Report Date:

1962-12-28

Pagination or Media Count:

44.0

Abstract:

Stability in storage was found to be greater for the silicone-titanium copolymer alone or in solution in mineral spirits than with combinations of silicone-titanium copolymer and dimethyldiethoxysilane. A saturated solution of p-toluene sulfonic acid was found effective as a catalyst for the silicone-titanium copolymer alone and in solution in mineral spirits when applied to a dry panel in pre-flight application. Its stability on storage was found to be greater than that of sodium bisulfate in paste form. A re- evaluation was made of several surface active agents incorporated in acidified dimethyldiethoxysilane. Instead of quick release at 40 psi, as previously used, a gradual release at 5 psi pressure at a rate of 1 mlmin for 10 minutes was employed. No significant improvement in repellency was obtained when application was made under rain conditions.

Subject Categories:

  • Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE