Stock material or miscellaneous articles – Composite – Of epoxy ether
Patent
1991-08-16
1993-11-09
Beck, Shrive
Stock material or miscellaneous articles
Composite
Of epoxy ether
4274071, 427410, 2041811, 2041814, B32B 2738, B05D 136
Patent
active
052601358
ABSTRACT:
An electrodepositable primer composition having improved delamination resistance with regard to automotive topcoats is disclosed. The composition is particularly useful in conjunction with topcoats which transmit ultraviolet radiation. The composition includes an ionic resin and a hindered amine light stabilizer (HALS) which is preferably a hindered aminoether light stabilizer. A preferred hindered aminoether light stabilizer is bis-(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacate. The invention also includes a process for coating a substrate by applying the above-described primer composition and subsequently applying a topcoat. The process can alternatively include applying a standard primer composition to a substrate and subsequently applying a HALS compound to the electrodeposited substrate.
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Corrigan Victor G.
Gruber Gerald W.
Polack Michael A.
Zwack Robert R.
Beck Shrive
Dudash Diana
PPG Industries Inc.
Uhl William J.
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