Production of improved polymers via the use of star cores
AssigneePetrecycle Pty Ltd.
InventorSimon Michael West
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Abstract
There is provided a process for producing high molecular weight polymer comprising the step of reacting one or more preformed linear polymers with one or more cores (as hereinbefore defined) to form high molecular weight polymers, wherein the preformed linear polymers are at a temperature in the range from the melting point of the preformed linear polymers to 330° C.
Claims9
A process for producing a high molecular weight polyester comprising reacting one or more preformed linear polyesters with at least 0.07 mole % of one or more cores to form high molecular weight polyesters;
- wherein the preformed linear polyesters are at a temperature in the range from the melting point of said preformed linear polyesters to 330° C.;
- and wherein the cores are selected from the group consisting of:
- (i) a compound of the formula:
- wherein
- R1 is —OCH2CH2O—,
- and
- R2 is —OH, —OCOCH3, —OCH2CH2OH;
- (ii) a compound of the formula:
- wherein
- R3 is —OCOCH3 or —OCH2CH2OH
- (iii) a compound of the formula:
- and
- (iv) a mixture thereof.
A star core for use in the preparation of a high molecular weight polymer, wherein said star core is a mixed anhydride of the formula:
- wherein
- R2 is —O—C(═O)—CH3;
- and
- R is
Dependencies are inferred from the claim text.