Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1984-06-06
1985-06-11
Phynes, Lucille M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
525 26, 525 47, 526328, 5263292, 528289, 528303, 528304, C08G 6320, C08G 6344
Patent
active
045230080
ABSTRACT:
An unsaturated polyester, such as propylene glycol-maleic acid-phthalic acid prepolymer dissolved in styrene is interpolymerized with an ultraviolet absorber of the formula: ##STR1## and/or an antioxidant of the formula ##STR2## where R and R.sup.2 are selected from H or lower alkyl such as methyl and R.sup.1 is tertiary alkyl such as tertiary butyl to form a polymer stable to exposure to the outdoors without degradation by ultraviolet radiation, thermal and/or photooxidation.
REFERENCES:
patent: 3814724 (1974-06-01), Suzuki et al.
patent: 3962055 (1976-06-01), Pacifici et al.
patent: 3962056 (1976-06-01), Pacifici et al.
Borsig Eberhard
Vogl Otto
Jones Thomas H.
Manning John R.
McCaul Paul F.
Phynes Lucille M.
The United States of America as represented by the Administrator
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