Improvements in or relating to organic material
AssigneeAltro Limited
InventorsEdward James Devine, Richard John Peace, Shireen Bobat
Life of this patent
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Abstract
The invention provides a plasticiser composition which comprises: (a) a first plasticiser which is one or more compounds of general formula (I) wherein R1 and R2 each independently represent a straight or branched chain alkyl moiety comprising from seven to twelve carbon atoms; and (b) a second plasticiser which is a citrate ester; a plasticised polymer formulation comprising a polymer and the plasticiser composition; a plastics article comprising the plasticised polymer formulation; and a method for the preparation of the plasticiser composition to provide a plasticised polymeric formulation which can be stored for up to five weeks with an increase of viscosity of less than 300%.
Claims21
A plasticiser composition which comprises:
- (a) a first plasticiser which is one or more compounds of general formula (I)
- wherein R1 and R2 each independently represent a straight or branched chain alkyl moiety comprising from seven to twelve carbon atoms;
- and
- (b) a second plasticiser which is a citrate ester.
A plasticised polymer formulation which comprises a polymer and a plasticiser composition which comprises:
- (a) a first plasticiser which is one or more compounds of general formula (I)
- wherein R1 and R2 each independently represent a straight or branched chain alkyl moiety comprising from seven to twelve carbon atoms;
- and
- (b) a second plasticiser which is a citrate ester.
A method of preparing a plasticiser composition which method comprises a step of mixing a polymer with a plasticiser composition wherein the plasticiser composition comprises:
- (a) a first plasticiser which is one or more compounds of general formula (I)
- wherein R1 and R2 each independently represent a straight or branched chain alkyl moiety comprising from seven to twelve carbon atoms;
- and
- (b) a second plasticiser which is a citrate ester;
- wherein the plasticised polymeric formulation can be stored for up to five weeks with an increase of viscosity of less than 300%.
Dependencies are inferred from the claim text.