Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1987-08-19
1988-11-01
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 91, 524168, 524169, 524336, 524339, C08K 547, C08K 544
Patent
active
047821035
ABSTRACT:
Ultra violet light resistant polycarbonates are produced having processing or heat stability by adding compatible UV absorbing compounds and aromatic sulfonimides. The UV absorbing compounds are used in amounts from about 0.01 to about 5.0% by weight and the sulfonimides are used in an amount from about 0.0001 to about 10.0%. The preferred UV absorber is 2-(2'-hydroxy-5'-t-octylphenyl)-benzotriazole. The preferred sulfonimide is N-(p-tolylsulfonyl)-p-toluenesulfonimide.
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patent: 4218357 (1980-08-01), Mark et al.
patent: 4254015 (1981-03-01), Thomas et al.
patent: 4535104 (1985-08-01), Pyles
patent: 4600632 (1986-07-01), Paul et al.
patent: 4727101 (1988-02-01), Ogoe et al.
Colley B. G.
Hoke Veronica P.
The Dow Chemical Company
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