Reactive pendant group

In the researches performed by Tenhu and co-authors [19-21], it was shown that by means of chemical modification of the units with reactive pendant groups in thermoresponsive NiPAAm-containing copolymers one can prepare polymeric products, whose solution behaviour resemble in some aspects the behaviour predicted by the theory for protein-like copolymers. Scheme 1 presents the reaction used in these syntheses. 

Reactive Pendant Groups on Styrene Backbones. The photolysis of p-acetoxystyrene (III) in acetonitrile solution gives results which are similar to those obtained in a comparable study in the solid-state using 1 /tm thick films in both cases the expected rearrangement is taking place as shown on Scheme 7. 

Reactive Pendant Groups on Acrylic Backbones. Our study of the photolysis of poly (phenyl methacrylate) in dioxane confirms the results of previous workers... 

Fluorinated unsaturated alcohols have been prepared from the point of view of potential fluo-rinated monomers with a reactive pendant group. There seem to be no examples of the preparation of fluorinated unsaturated phenols by dehalogenation. Examples of the formation of fluorinated unsaturated alcohols are listed in Table 7. 

Nevertheless, most of the work reported on the post-polymerization modification of poly(all lene H-phosphonate)s concerns the functionalization with reactive pendant groups that include hydroxyl or amino groups, which make possible the introduction of a wide range of (bio)ac-tive molecules and leading to new reactive PPEs with tunable properties for biomedical applications. Most of the post-polymerization functionalization methods involve the corresponding polymeric chlorophosphite, since it was early demonstrated that cyclic allgrlene chlorophosphites such as 2-chloro-2-oxo-l,3,2-dioxaphospholane cannot be polymerized efficiently. ... 

Also, FEPM is a class of fluoroelastomers prepared from monomeric units containing one or more alkyl, perfluoroalkyl, or perfluoroalkoxy groups, with a reactive pendant group. This class of fluoroelastomers does not contain vinylidene fluoride monomer units. 

This was accomplished by inducing a cross-linking reaction between the reactive pendant groups of a side-chain NLO polymer and the reactive end groups of the chro-mophore. Stable NLO response at 90°C for more than 2000 h was demonstrated after a small initial decay [92]. 

The presence of pendant reactive vinyl groups through 1,2 and 3,4 addition provides a site for branching and cross-linking since these may be involved in other chain reactions. Because of this a 1,4 polymer is generally to be desired. 

It is clear from the preceding discussion that organometallic photoinitiators (metal carbonyl or chelate derivatives) can provide a convenient route for synthesizing vinyl polymers with a variety of different reactive end group or photoreactive pendant groups or side chains through the polymer chain. 

The two matrices in these cements are of a different nature an ionomer salt hydrogel and polyHEMA. For thermodynamic reasons, they do not interpenetrate but phase-separate as they are formed. In order to prevent phase separation, another version of resin glass polyalkenoate cement has been formulated by Mitra (1989). This is marketed as VitraBond, which we term a class II material. In these materials poly(acrylic acid), PAA, is replaced by modified PAAs. In these modified PAAs a small fraction of the pendant -COOH groups are converted to unsaturated groups by condensation reaction with a methacrylate containing a reactive terminal group. These methacrylates can be represented by the formula ... 

Synthesis of the Polymers Containing Reactive Ether Pendant Groups, We have previously described the synthesis of high purity poly(p-hydroxystyrene) free from deleterious oxidized species by polymerization of 4-t-butyloxycarbonyloxy-styrene followed by the removal of... 

---