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Elastomeric compositions based on esters of a starchy material and method for preparing such compositions

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

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

[0037] The water resistance of these biodegradable compositions, or else water-soluble compositions, is generally poor and insufficient for the possibility of making 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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  • Elastomeric compositions based on esters of a starchy material and method for preparing such compositions
  • Elastomeric compositions based on esters of a starchy material and method for preparing such compositions

Examples

Experimental program
Comparison scheme
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example 1

[0208] Example 1: Preparation of an elastomer composition according to the present invention

[0209] Preparation of the composition

[0210] The ones used in this example are:

[0211] -An acetate of potato starch as the ester of the starch material, the acetate has an ester DS of 2.7 and is denoted by "ACET 1" hereinafter;

[0212] -A liquid composition of glycerol triacetate (glyceryl triacetate) as a plasticizer for the ester of this starch material;

[0213] -One by Noveon in ESTANE The polyester TPU type polymer sold under the name 58887 is a non-starch polymer of elastomer;

[0214] -Methylene biphenyl diisocyanate (MDI) sold under the name Suprasec 1400 by Huntsman as a coupling agent.

[0215] First, a controlled composition was produced through several steps, the composition containing by weight:

[0216] -30% of ACET 1 ester of starch material;

[0217] -20% triacetin; and

[0218] -50% PLA (polylactic acid).

[0219] In the first step, 60 parts of ACET 1 ester and 40% parts of ...

example 2

[0239] Example 2: Use of the elastomer composition according to the present invention in the preparation of chewing gum

[0240] In the context of this example, the possibility of using the composition according to the invention to replace at least partly a gum base based on a synthetic polymer for the preparation of chewing gum was evaluated.

[0241] 2.1: Raw materials

[0242] The main raw materials used in this example are:

[0243] -Esters used as starch materials are:

[0244] ○ A kind of maltodextrin derived from waxy corn starch (the maltodextrin sold by the applicant GLUCIDEX 2) Acetate ester, which has an ester DS of about 2.7 (hereinafter referred to as "ACET 2");

[0245] ○ An acetate of fluidized corn starch, in this case the starch CLEARGUM sold by the applicant MB80, the acetate has an ester DS of about 2.5 (hereinafter referred to as "ACET 3");

[0246] ○An acetate of potato starch (DS of 0.45), and then grafted with ε-caprolactone, the resulting starch material este...

example 3

[0291] Example 3: Elastomer based on an ester of a plasticized starch material and a TPU type ester Preparation of a composition according to the present invention

[0292] Preparation of the composition

[0293] The ones used in this example are:

[0294] -The acetate of maltodextrin ACET 2 as described in Example 2 as the ester of plasticized starch material;

[0295] -15 parts by weight of benzyl alcohol per 100 parts by weight of the ester as a plasticizer;

[0296] -One by Noveon in ESTANE The ester TPU type polymer sold under the name 58447 is a non-starch polymer of elastomers;

[0297] -Methylene biphenyl diisocyanate (MDI) sold under the name Suprasec 1400 by Huntsman as a coupling agent.

[0298] The composition according to the present invention produced under the general conditions of Example 1 (hereinafter "COMP 5") contains:

[0299] -50 servings of ESTANE 58447 polymer;

[0300] -50 parts by weight of plasticized ACET 2 ester; and

[0301] -1 part of MDI by weight.

[03...

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Abstract

The subject matter of the present invention is an elastomeric composition, characterized in that it contains: - at least 5% and at most 70% by weight of an ester of a starchy material, which has a degree of ester substitution (DS) of between 1.0 and 3.0, preferably between 1.2 and 3.0, - at least 5% and at most 40% by weight of a plasticizer of this ester of starchy material, said plasticizer preferably being other than water, and - at least 25% by weight and at most 90% by weight of an elastomeric non-starch polymer.

Description

Technical field [0001] The present invention relates to novel thermoplastic or elastomeric compositions. These compositions are based on esters of starch materials with a high degree of ester substitution (DS), plasticizers for these esters, and polymers other than starch, which have elastomeric properties . Background technique [0002] In the present invention, the expression "elastomer composition" should be understood to mean a composition that softens under the action of heating, hardens upon cooling, and has stress at low temperatures, and especially at ambient temperature. The ability to recover its original shape and its original size roughly and quickly after applying a pulling force. It has at least one glass transition temperature (T g ), below this temperature, all or part of the amorphous part of the composition is in a brittle glass state, and above this temperature the composition may undergo reversible plastic deformation. The glass transition temperature or at ...

Claims

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Application Information

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IPC IPC(8): C08L3/06C08K5/103C08L23/06A23G4/08C08L51/06
CPCA23G4/08C08L51/04C08L51/08C08L51/085C08L3/06C08L51/06C08L21/00C08L67/04C08K5/053C08L51/003C08K5/103C08L2666/02
Inventor 莱昂·曼蒂克雅克·特里皮耶
Owner ROQUETTE FRERES SA
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