Joy M Schaefer

US Patent:

44228864, Dec 27, 1983

Filed:

Mar 16, 1983

Appl. No.:

6/475911

Inventors:

Narayan Das - Westmont IL
Joy M. Schaefer - Park Ridge IL

Assignee:

Chemical Systems, Inc. - Chicago IL

International Classification:

C23F 706

US Classification:

148 315

Abstract:

A low pH solution and a method for conversion coating aluminum and aluminum alloy surfaces, as well as the coated surfaces themselves, utilizing zirconium, fluoride and nickel and, optionally, fluorophosphate.

US Patent:

43916520, Jul 5, 1983

Filed:

Jan 29, 1982

Appl. No.:

6/343992

Inventors:

Narayan Das - Westmont IL
Joy M. Schaefer - Park Ridge IL

Assignee:

Chemical Systems, Inc. - Chicago IL

International Classification:

C23F 700

US Classification:

148 615R

Abstract:

A low pH solution and a method for conversion coating aluminum and aluminum alloy surfaces, as well as the coated surfaces themselves, utilizing zirconium, fluoride and nickel and, optionally, fluorophosphate.

US Patent:

53711386, Dec 6, 1994

Filed:

Aug 21, 1991

Appl. No.:

7/748485

Inventors:

Joy M. Schaefer - Park Ridge IL
David Ganbarg - Richmond IN

Assignee:

Tru Vue, Inc. - Chicago IL

International Classification:

C08K 513

US Classification:

524739

Abstract:

A poysiloxane resin composition includes a blend of silanols, colloidal silica, an ultraviolet-absorbing material, and a dye for correcting the color of a film formed from the resin composition. The silanols include a silanol from the group having the formula R. sub. w Si(OH). sub. x or R. sub. y Si(OR'). sub. z where (w+x) or (y+z)=4, and R and R' are organic radicals without any crosslinking sites, silanol from the group having the formula R"Si(OR'"). sub. 3 where R" is a hydrogen atom or an organic radical and R"' is an organic radical containing a crosslinking site. The resin may be cured at 420. degree. F. The ultraviolet-absorbing material may be a benzophenone, a benzotriazole, or a benzothiazole. A process for forming the resin composition includes reacting the silanols and the ultraviolet-absorbing material under continuous agitation for about six hours.