Title: Fluoropolymer primer having improved scratch resistance

Abstract: Compositions containing A. fluoropolymer, B. colloidal silica, C. the salt of a polyamide acid, D. a coalescing agent, E. mica particles, mica particles coated with pigment, or metal flake, And F. a liquid carrier Are useful for priming metal, especially cookware, before topcoating it with a fluoropolymer enamel.

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Inventors: Vassiliou, Eustathios (Newark, DE, US)

Application Number: 701745
Filing Date: 1976-06-30
Publication_date: 1977-09-20
Assignee: E. I. Du Pont de Nemours and Company (Wilmington, DE)
Primary Class(es): 428/324 427/388.1, 427/409, 428/327, 428/328, 428/331, 428/404, 428/422, 428/435, 428/458, 428/702, 524/5, 524/104, 524/167, 524/173, 524/233, 524/353, 524/514, 52
Other Classes:
US Patent Ref:

2961341	Nov, 1960	Long	428/422.
2979418	Nov, 1961	Dipner	428/422.
3087827	Apr, 1963	Klenke	106/291.
3087828	Apr, 1963	Linton	106/296.
3087829	Apr, 1963	Linton	106/291.
3655604	Apr, 1972	Strolle	260/29.
3661831	May, 1972	Fang	260/32.
3663728	May, 1972	Hoback	260/29.
3694392	Sep, 1972	Werner	260/29.
3787338	Jan, 1974	Skelly	260/29.

Other Refs:
Primary Examiner: Robinson, Ellis
Assistant Examiner:
Attorney: