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Thermoplastic or elastomeric compositions based on esters of a starchy material and method for preparing such compositions

A technology of starch materials and compositions, applied in food science, chewing gum, applications, etc., can solve the problems of poor water resistance of water-soluble compositions, physical and chemical stability limiting potential uses, and insufficient satisfaction

Inactive Publication Date: 2011-09-14
ROQUETTE FRERES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0039] The water resistance of these biodegradable compositions, or otherwise water-soluble compositions, is generally poor and insufficient for the possibility of manufacturing articles and any products with a long or medium service life (such as automotive parts)
Furthermore, in this case the physicochemical stability of these compositions is also a factor which greatly limits their potential use

Method used

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  • Thermoplastic or elastomeric compositions based on esters of a starchy material and method for preparing such compositions
  • Thermoplastic or elastomeric compositions based on esters of a starchy material and method for preparing such compositions
  • Thermoplastic or elastomeric compositions based on esters of a starchy material and method for preparing such compositions

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0207] Example 1: Preparation of compositions according to the invention

[0208] Preparation of the composition

[0209] The ones used for this instance are:

[0210] - an acetate of potato starch as an ester of starch material, which acetate has an ester DS of 2.7 and is hereinafter denoted by "ACET 1";

[0211] - a liquid composition of glycerol triacetate (glycerol triacetate) as a plasticizer for the esters of the starch material;

[0212]- a thermoplastic polymer, in this case PLA (polylactic acid) as a polymer other than starch;

[0213] - A by Noveon in ESTANE Elastomeric polymers of the polyether TPU type sold under 58887 as polymers other than starch;

[0214] - a low-density polyethylene (LDPE) as a polymer other than starch,;

[0215] - A by Polyram in BONDYRAM Maleic anhydride-grafted polyethylene sold under 4001 as polymers other than starch;

[0216] - Methylene diphenyl diisocyanate (MDI) sold under the name Suprasec 1400 by Huntsman as coupling ag...

example 2

[0242] Example 2: Use of the elastomer composition according to the invention in the preparation of chewing gum

[0243] In the context of this example, the possibility of using a composition according to the invention to at least partially replace a gum base based on a synthetic polymer for the production of chewing gum was evaluated.

[0244] 2.1: Raw materials

[0245] The main raw materials used in this example are:

[0246] - Esters as starch materials, respectively:

[0247] ○ A kind of maltodextrin derived from waxy corn starch (maltodextrin GLUCIDEX sold by the applicant 2) acetates having an ester DS of around 2.7 (hereinafter denoted by "ACET 2");

[0248] o An acetate of fluidized corn starch, in this case the starch CLEARGUM sold by the applicant MB80, the acetate has an ester DS of around 2.5 (hereinafter denoted by "ACET 3");

[0249] o An acetate (DS of 0.45) of potato starch, subsequently grafted with ε-caprolactone, the resulting starch material ha...

example 3

[0295] Example 3: Preparation of an ester based on a plasticized starch material and a TPU type ester polymer A composition according to the invention :

[0296] Preparation of the composition

[0297] The ones used for this instance are:

[0298] - acetate of maltodextrin ACET 2 as described in example 2 as ester of plasticized starch material;

[0299] - benzyl alcohol as plasticizer in an amount of 15 parts by weight per 100 parts by weight of said ester;

[0300] - A by Noveon in ESTANE Polymers of the ester TPU type sold under 58447 as polymers other than starch;

[0301] - Methylene diphenyl diisocyanate (MDI) sold under the name Suprasec 1400 by Huntsman as coupling agent.

[0302] The composition according to the invention produced under the general conditions of Example 1 (hereinafter "COMP 5") comprises:

[0303] -50 servings of ESTANE 58447 polymer;

[0304] - 50 parts by weight of plasticized ACET 2 ester; and

[0305] - 1 part by weight of MDI. ...

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Abstract

The subject matter of the present invention is a thermoplastic or elastomeric composition, characterized in that: a) it exhibits a degree of biodegradability of less than 50%, preferably less than 30%, and b) it contains at least 0.5% and at most 99.95% by weight of an ester of a starchy material, which has a degree of ester substitution (DS) of between 1.6 and 3, and at least 0.05% by weight and at most 99.5% by weight of a polymer other than starch.

Description

technical field [0001] The present invention relates to novel thermoplastic or elastomeric compositions based on esters of starch materials with a high degree of ester substitution (DS) and polymers other than starch. Background technique [0002] In the present invention the expression "thermoplastic or elastomeric composition" is understood to mean a composition which in a reversible manner softens under the action of heat and hardens on cooling (thermoplastic) and / or under stress Restores its original shape and its initial dimensions (elastomeric) approximately rapidly after the application of a tensile force. It has at least one glass transition temperature (T g ), below which temperature all or part of the amorphous portion of the composition is in a brittle glassy state, and above which the composition may undergo reversible plastic deformation. The glass transition temperature or at least one of the glass transition temperatures of the thermoplastic or elastomeric c...

Claims

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Application Information

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IPC IPC(8): C08L3/06C08K5/103C08L23/06C08L51/06A23G4/08C08L75/08
CPCC08L75/04C08G18/7664C08L51/04C08L51/08C08L51/085C08L3/06C08L51/06C08L21/00C08L75/06C08G18/6484C08L51/003C08K5/103C08L2666/02C08L2666/20
Inventor 莱昂·曼蒂克雅克·特里皮耶
Owner ROQUETTE FRERES SA
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