SILOXANE POLYMERS WITH A CENTRAL POLYSILOXANE POLYMER BLOCK WITH ORGANOFUNCTIONAL RADICALS EACH HAVING AT LEAST TWO BIVALENT GROUPS SELECTED FROM UREA AND/OR CARBAMATE GROUPS AND AT LEAST ONE UV/VIS CHROMOPHORE AS RADICAL

摘要

The invention relates to siloxane polymers comprising a central polysiloxane polymer block B with organofunctional radicals bonded terminally or laterally to the polymer block and based on IPDI and UV/Vis chromophores or derivatives, in particular UV chromophores, which are covalently bonded via a hydrophobic or hydrophilic linker group Q1′, Q2′, and compositions comprising these siloxanes. Also disclosed are processes for their preparation and their use.

主权项

1. A siloxane polymer of the general formula I comprising a central polysiloxane polymer block B,
(i.) which is substituted with organofunctional radicals, (ii.) the polymer block B has linear and/or branched structures with at least two difunctional siloxane units, (iii.) the polymer block B has on at least two terminal silicon atoms or at least one terminal and at least one lateral silicon atom of the siloxane units of polymer block B the organofunctional radicals -Q1 and -Q2, where radicals are identical or different,
Q2-B-Q1  (I) where -Q1 corresponds to the general formula IIa and -Q2 corresponds to the formula IIb,
-Q1=-Q1′-A-(C═O)-D-Q1″-A′-(C═O)-D′-Q1*  (IIa)-Q2=-Q2′-A-(C═O)-D-Q2″-A′-(C═O)-D′-Q2*  (IIb) where A is —NH—, —O— or —S— and D is —NH— in each case independently in formulae IIa and IIb, where A′ is —NH— and D′ is —NH—, —O— or —S— in each case independently in formulae IIa and IIb, where each radical Q1 and Q2 of the formulae IIa or IIb in each case independently has at least two bivalent groups selected from carbamate and urea group, where Q1′ and Q2′ in each case independently comprises a bivalent hydrocarbon radical with 6 to 200 carbon atoms optionally comprising at least one heteroatom selected from O, N and S, a bivalent radical comprising aryl, arylalkyl groups optionally comprising polyether radicals containing at least one heteroatom O, N or S or polyether radicals containing alkyl, aryl or alkyl and aryl groups, where Q1″ and Q2″ in each case independently comprises a bivalent linear, branched and/or cyclic alkyl radical with 4 to 200 carbon atoms or a bivalent radical comprising an aryl and/or arylalkyl radical with 6 to 200 carbon atoms, and where -D′-Q1* and -D′-Q2* in each case independently comprises as radicals Q1* and Q2* a UV/Vis chromophore as radical.