Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1992-07-30
1993-10-05
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528128, 528176, 528183, 528185, 528189, 528192, 528193, 528194, 528220, 528272, 528288, 528292, 528302, 528303, 528304, 528305, 528308, 5283086, 528332, C08G 1400
Patent
active
052506525
ABSTRACT:
The invention is concerned with novel water-dispersible copolymers which contain at least one UVA light-absorbing monomer, one UVB light-absorbing monomer, one hydrophilic monomer, and optionally one hydrophobic monomer component. The UVA light-absorbing monomer absorbs at .lambda.max ultraviolet light in the 320-400 nm range. The UVB light-absorbing monomer absorbs at max ultraviolet light in the 290-320 nm range. Because of the R.sub.3 group used in the invention, the copolymers of the invention permit higher loading of UV monomers than previously obtainable.
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Ihara et al., J. Polym. Sci., Part A-1, 9(8):2413 (1971).
Khorshahi Ferial
Langer Matthew E.
Acquah Samuel A.
Koatz Ronald A.
Lever Brothers Company Division of Conopco, Inc.
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