Photocatalyst system and ultraviolet light curable coating compo

Details Photocatalyst system and ultraviolet light curable coating compo Photocatalyst system and ultraviolet light curable coating compo

1974-10-23

1977-04-12

Newsome, John H.

Coating processes

Electrical product produced

Welding electrode

20415923, 252426, B05D 306

Patent

active

040176525

ABSTRACT:
The oxygen inhibition of the photopolymerization of acrylic resins is reduced by employing a photocatalyst system containing an aromatic ketone and/or aromatic aldehyde photosensitizer having a triplet energy in the range of from about 54 kilocalories per mole to about 72 kilocalories per mole and which promotes polymerization through bimolecular photochemical reactions of the energy donor type and an aromatic ketone photoinitiator which generates a radical pair by way of unimolecular homolysis resulting from photoexcitation. An exemplary photocatalyst system is benzophenone and isobutyl benzoin ether.

REFERENCES:
patent: 3368900 (1968-02-01), Borg
patent: 3427161 (1969-02-01), Laridon et al.
patent: 3756827 (1973-09-01), Chang et al.
patent: 3759807 (1973-09-01), Osborn et al.
patent: 3824284 (1974-07-01), Rudolph et al.
patent: 3825479 (1974-07-01), Carlick et al.
patent: 3827960 (1974-08-01), McGinniss

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