Abstract: The invention relates to a polymeric indicator fixed in a polymeric gel carrier, wherein the polymeric gel carrier comprises a hydrophilic polymer, wherein the polymeric indicator and the hydrophilic polymer are present together in the form of a combined cross-linked hydrogel network fixed by chemical bonds. The invention further relates to a method for preparing a polymeric indicator fixed in a polymeric gel carrier and to a sensor for measuring pH, which comprises the polymeric indicator fixed in a polymeric gel carrier.

Abstract: The present invention relates to a process for preparing carboxyl-terminated polyisobutenes by ozonolysis of polyisobutenes terminated by an ethylenically unsaturated double bond.

Abstract: The present invention relates to a process for preparing carboxyl-terminated polyisobutenes by ozonolysis of polyisobutenes terminated by an ethylenically unsaturated double bond.

Abstract: The invention relates to the use of polymers of the formula (1) 1

Abstract: Polymers with biocidal action, process for their preparation and their use The invention relates to polymers consisting essentially of structural units of the formula (1) in which R1 is a C1-C4-alkylene group R2, R3 independently of one another, are a C8-C12-alkyl or alkenyl group R4 is methyl or ethyl R5 is hydrogen or methyl and whose molecular weight is between 1000 and 100 000 g/mol, to intermediates for their preparation, to a process for their preparation, and to their use as biocidal coating composition for surfaces and textiles.

Abstract: The invention relates to polymers consisting essentially of structural units of the formula (1) 1

Abstract: The synthesis of poly(isobutylene-b-methyl vinyl ether) (PIB-b-PMeVE) by living carbocationic polymerization (LC.sym.Pzn) employing the sequential monomer addition (SMA) technique is described. The process starts by producing the living PIB.sym. block employing the 2-chloro-2,4,4-trimethylpentane (TMPC11/TiCl.sub.4 initiating system in the presence of the common ion salt tetra-n-butylammonium chloride (n-Bu.sub.4 NCl) in CH.sub.3 Cl/n-C.sub.6 H.sub.14 or CH.sub.2 Cl.sub.2 /n-C.sub.6 H.sub.14 mixed solvents at -80.degree. C. and continues by the addition of methyl vinyl ether (MeVE). The second living block forms only in the presence of excess TiCl.sub.4 suggesting that the species that starts the second block and subsequently sustains its growth is a MeVE.multidot.TiCl.sub.4 complex. The stoichiometry of this complex (1:1 or 1:2) is uncertain. The TiCl.sub.4 remains attached to the MeVE units after their incorporation into the diblock, however, it can be readily removed by water.

Abstract: New controlled and/or sustained drug release amphiphilic compositions based on various amphiphilic networks of the present invention are described. New processes for manufacturing amphiphilic networks are also described. These new processes allow for the production of more diverse amphiphilic networks. The controlled and/or sustained drug release properties of the networks of the present invention show release controlled and sustained release profiles for 20 hours or more and Fickian and non-Fickian diffusion rates.