| 摘要 |
A method for manufacturing a propylene polymer, including: a) fermenting and optionally purifying first renewable materials to produce an alcohol or an alcohol mixture, the alcohol or alcohol mixture including at least isopropanol and/or at least a mixture of ethanol and 1-butanol; b) dehydrating the resulting alcohol or the alcohol mixture to produce an alkene or alkene mixture in a first series of reactors, the alkene or alkene mixture containing at least propylene; c) polymerizing the propylene in a second reactor, optionally in the presence of a comonomer, so as to produce a propylene polymer; d) isolating the propylene polymer obtained in step c); and e) grafting the propylene polymer obtained from step d). A grafted propylene polymer capable of being obtained by the method, to the compositions containing the polymer, as well as to the uses of the polymer. |
| 主权项 |
1. A process for manufacturing a grafted propylene polymer, the propylene polymer grafted by at least one grafting monomer selected from the group consisting of unsaturated carboxylic acids, functional derivatives of unsaturated carboxylic acids, unsaturated dicarboxylic acids having 4 to 10 carbon atoms, functional derivatives of unsaturated dicarboxylic acids having 4 to 10 carbon atoms, C1-C8 alkyl esters of unsaturated carboxylic acids, glycidyl ester derivatives of unsaturated carboxylic acids, metal salts of unsaturated carboxylic acids, and mixtures thereof, wherein the propylene polymer comprises an amount of carbon resulting from renewable raw materials of greater than 20% by weight relative to the total weight of carbon of the propylene polymer, the amount of carbon resulting from renewable raw materials being measured according to the standard ASTM D 6866-06,
the process comprising the following steps: a) fermenting renewable raw materials, and optionally purifying, in order to produce an alcohol or a mixture of alcohols; b) dehydrating the alcohol or the mixture of alcohols obtained to produce, in at least one first reactor, an alkene or a mixture of alkenes, said alkene or mixture of alkenes comprising at least propylene and, optionally purifying the mixture of alkenes in order to obtain propylene; c) polymerizing, in at least one second reactor, the propylene, optionally in the presence of a comonomer, in order to produce a propylene polymer; d) isolating the propylene polymer obtained at the end of step c); and e) grafting the propylene polymer obtained at the end of step d), wherein the fermentation step a) and the dehydrating step b) are carried out at a temperature below 500° C. |
