| 摘要 |
<p>The invention relates to a method for preparing a modified natural rubber comprising: - a step for the addition in latex phase of a modifying agent with formula (I) as well as its acid or base, organic or mineral salts, its optical or geometric isomers and/or its solvates such as hydrates: Formula (I) in which R1 and R2, independently of one another, designate a hydrogen atom, a polar group chosen from among amino, imino, nitrile, ammonium, imide, amide, hydrazo, azo, diazo, thio, hydroxyl, carboxyl, carbonyl, epoxy, oxycarbonyl, heterocyclic groups comprising one or more nitrogen atoms, heterocyclic groups comprising one or more oxygen atoms, groups comprising tin, alkoxysilyl groups, the polar groups being supported by a linear or branched, saturated or unsaturated C1-C18 alkyl chain, R1 and R2 not being able to designate a hydrogen atom when taken together; a natural rubber having a nitrogen level of from 0 to 0.4 wt% relative to the total weight of the dried natural rubber, - then a step of drying.</p> |
