Patent ID: 7906108

Claim:
Polysiloxanes comprising the following structural elements per molecule: one element of formula (H 3 C) 3 —Si— (I), one element of formula —O—Si(CH 3 ) 3 (II), at least two elements selected from the groups (A), (B), (C) and (D), (A) 0 to 100 elements in arbitrary order which are either identical or different from each other selected from the group consisting of formulae —O—Si(CH 3 )[CH(CH 3 )R 1 ]— (IIIa), —O—Si(CH 3 )(CH 2 —CH 2 —R 1 )— (IIIb), —O—Si(CH 3 )[C(═CH 2 )R 1 ]— (IIIc), and —O—Si(CH 3 )(CH═CH—R 1 )— (IIId); (B) 0 to 100 elements in arbitrary order which are either identical or different from each other selected from the group consisting of formulae —O—Si(CH 3 )[CH(CH 3 )R 2 ]— (IVa), —O—Si(CH 3 )(CH 2 —CH 2 —R 2 )— (IVb), —O—Si(CH 3 )[C(═CH 2 )R 2 ]— (IVc), and —O—Si(CH 3 )(CH═CH—R 2 )— (IVd); (C) 0 to 100 elements in arbitrary order which are either identical or different from each other selected from the group consisting of formulae —O—Si(CH 3 )[CH(CH 3 )R 3 ]— (Va), —O—Si(CH 3 )(CH 2 —CH 2 —R 3 )— (Vb), —O—Si(CH 3 )[C(═CH 2 )R 3 ]— (Vc), and —O—Si(CH 3 )(CH═CH—R 3 )— (Vd); (D) 0 to 100 elements in arbitrary order which are either identical or different from each other selected from the group consisting of formulae —O—Si(CH 3 )[CH(CH 3 )R 4 ]— (VIa), —O—Si(CH 3 )(CH 2 —CH 2 —R 4 )— (VIb), —O—Si(CH 3 )[C(═CH 2 )R 4 ]— (VIc), and —O—Si(CH 3 )(CH═CH—R 4 )— (VId); 1-200 elements in arbitrary order of formula —O—Si(CH 3 ) 2 —(VII), and optionally 1-20 elements in arbitrary order of formula —O—SiH(CH 3 )—(VIII), wherein R 1 is a UV-B light absorbing group, R 2 is a UV-A light absorbing group, R 3 is a UV-C light absorbing group, and R 4 is a broadband light absorbing group; with the proviso that the molecule comprises at least two elements belonging to different groups (A), (B), (C) and (D).