UV-absorbing benzotriazoles having a styrene group

Details UV-absorbing benzotriazoles having a styrene group UV-absorbing benzotriazoles having a styrene group

1998-02-04

1999-02-02

Richter, Johann

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523108, 525258, 5253282, 5253288, 5253289, 5253307, 526259, 528423, 548259, 548260, 623 6, 351163, G21K 110, G02C 704, A61F 216, C02C 710, C07D24920, C08G 7306

Patent

active

058666354

ABSTRACT:
A reactive monomer for preparing ultraviolet absorbing polymers has formula (I) wherein R.sup.1 is a halogen or C.sub.1 -C.sub.6 straight or branched chain alkoxy group; and R is a --(CH.sub.2).sub.3 O--, --(CH.sub.2).sub.2 O--, --CH(CH.sub.3)CH.sub.2 O--, --CH.sub.2 CH(CH.sub.3)O(--, --(CH.sub.2).sub.3 OCH.sub.2 --, --(CH.sub.2).sub.2 OCH.sub.2 --, --CH(CH.sub.3)CH.sub.2 OCH.sub.2 --, or --CH.sub.2 CH(CH.sub.3)OCH.sub.2 --group. The compound can be used to produce ultraviolet absorbing polymers, such as those used for ocular devices including contact and intraocular lenses.

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