Second step modifications of epoxidised polymers. 5. Systems allowing release of naphtyhlacetic acid from epoxidised polyisoprene and liquid natural rubber
Soutif Jean-Claude
creator
Brosse
Klimituksa Pairote
text
xx
Journal of Natural Rubber Research
1993
9999
monographic
und
243-252
A polymeric support containing free or linked naphthylacetic acid (NAA) a stimulator for the production of latex by Hevea can be obtained from epoxidised synthetic 1,4-polyisoprene or liquid natural rubber (LNR). Crosslinking of emulsified epoxidized polymers containing free or bound NAA by diacids or anhydrides catalysed by the tetrabutylammonium salt of the corresponding diacids leads to polymeric particles containing free NAA. Hydrolysis of NAA derivatives of epoxidised 1,4-polyisoprene and epoxidised LNR has been performed in basic media. This particular formulation leads to a high initial rate of liberation.
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