Thermoplastic processable starch or starch derivative polymer mixtures
AssigneeBio-Tec Biologische Naturverpackungen GmbH
InventorIvan Tomka
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Abstract
The present invention relates to thermoplastically processible esterification or transesterification products of starch or of starch derivatives with, for example, lactones, fatty acids, esteramides and the like, wherein the starch or the starch derivative is brought to melt using appropriate softeners or plasticizers before esterification or transesterification.
Claims22
A method for manufacturing a thermoplastically processable polymer composition comprising:
- (a) blending at least one of starch or a starch derivative with at least one hydrophobic material selected from the group consisting of esters, lactones, polyesters, esteramides, polyesteramides, dimeric fatty acids, modified fatty acids, acid methyl esters, esterpolyols, polyesterpolyols, glycerol trioleate, glycerol dilinoleate, and mixtures thereof, and
- (b) mixing and heating the starch or starch derivative with the hydrophobic material in a manner so as to form a thermoplastic melt and in order for at least a portion of the starch or starch derivative to react with at least a portion of the hydrophobic material so as to form at least one condensation reaction product of the starch or starch derivative and the hydrophobic material and in order to thereby form the thermoplastically processable composition.
A thermoplastically processable polymer composition comprising at least one condensation reaction product of starch or a starch derivative and a hydrophobic material selected from the group consisting of esters, lactones, polyesters, esteramides, polyesteramides, dimeric fatty acids, modified fatty acids, acid methyl esters, esterpolyols, polyesterpolyols, glycerol trioleate, glycerol dilinolate, and mixtures thereof.
Dependencies are inferred from the claim text.