Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1987-06-02
1989-05-16
Kight, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528 73, 528 74, C08G 802, C08G 1400
Patent
active
048311090
ABSTRACT:
This invention describes UV-stabilized step growth polymers such as polyesters, polyurethanes, polycarbonates, and combination thereof. The UV-stabilizing moieties present in these polymers comprise chemically bound, pendant ortho-hydroxydiphenyl ketone based moieties. The polymers are especially useful as protective films and fibers which are highly resistant to ultraviolet (UV) and sunlight degradation.
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Mitra Smarajit
Mitra Sumita B.
Kight John
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Moore M. L.
Sell Donald M.
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