Title: Containment coating composition

Abstract: A containment coating for glass containers. The composition includes a principal film-forming constituent comprising an acrylate latex containing a particulate resin comprising a copolymer of acrylonitrile and ethyl acrylate. The coating also contains at least one additional latex whose presence enhances the containment properties of the film after curing. Two such auxiliary latexes exhibit this capability and the coating composition contains either or both of them. One of these is a vinyl latex whose resin solids comprise a copolymer of ethylene and vinyl acetate. The other is a vinyl/acrylic latex whose resin solids comprise a copolymer of vinyl acetate and a lower alkyl acrylate. Hexamethoxymethylmelamine or a methylated urea-formaldehyde resin is included as a cross-linking agent and either polyacrylamide or a high molecular weight water-soluble polyethylene oxide resin is present as a thickener and a thixotrope. A method of producing a novel coated glass container of improved mechanical service strength is also disclosed.

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Other info:

Inventors: Brockway, M. Clifford (Columbus, OH, US)
Sharpe, Robert E. (Worthington, OH, US)

Application Number: 451824
Filing Date: 1974-03-18
Publication_date: 1976-03-16
Assignee: Liberty Glass Company (Sapulpa, OK)
Primary Class(es): 428/34.7 215/12.2, 525/155, 525/187, 525/218
Other Classes:
US Patent Ref:

3379559	Apr, 1968	Gerhardt	117/124.
3713867	Jan, 1973	Parkinson et al.	117/54.
3772061	Nov, 1973	McCoy et al.	117/94.
3823032	Jul, 1974	Ukai	117/124.

Other Refs:
Primary Examiner: Lusignan, Michael R.
Assistant Examiner:
Attorney: Koenig, Senniger, Powers and Leavitt