Coating processes – Restoring or repairing
Patent
1987-02-04
1988-05-10
Childs, Sadie L.
Coating processes
Restoring or repairing
156 94, 427142, 427201, 427202, 4273881, 4273935, B32B 3500
Patent
active
047434686
ABSTRACT:
In repairing a rupture as described herein the rupture is covered by a patch of metal or plastic sheet material which covers the rupture at least 1/2 inch beyond the rupture, then applying over the edge of the patch a layer of an alpha-cyanoacrylate which is liquid at 20.degree. C. and has the formula CH.sub.2 .dbd.C(CN)--COOR wherein R is a hydrocarbon radical selected from the group consisting of aliphatic, aromatic and cycloaliphatic hydrocarbon groups of 1-10 carbon atoms and alkoxy, chloro and fluoro derivatives of said hydrocarbon groups in which alkoxy groups there are 1-4 carbon atoms therein, this layer covering the adjacent areas of the covering patch and of the ruptured surface each for a distance of at least 1/4 inch from the edge of the covering patch and all around said patch and spreading on said added layer of alpha-cyanoacrylate a layer of a powdered solid selected from a group consisting of (i) a compound having hydroxyl, carboxylate or both hydroxyl and carboxylate groups therein and (ii) rubber.
REFERENCES:
patent: 4025677 (1977-05-01), Belke
patent: 4215173 (1980-07-01), Hubbard
patent: 4405750 (1983-09-01), Nakata et al.
patent: 4659589 (1987-04-01), Jimenez
Childs Sadie L.
Monacelli Walter J.
Renbec International Corp.
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