Composition for preparing a biodegradable polyurethane- based foam and a biodegradable polyurethane foam

A technology of polyurethane foam and biodegradation, which is applied in the field of compositions for preparing biodegradable polyurethane-based foams and biodegradable polyurethane foams, and can solve problems such as inability to use raw materials

Inactive Publication Date: 2009-05-06
PHB IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although resulting in biodegradable polyurethane materials, these known solutions use filler materials that do not allow the raw material to be used in the injection of articles requiring high-quality finishing

Method used

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  • Composition for preparing a biodegradable polyurethane- based foam and a biodegradable polyurethane foam
  • Composition for preparing a biodegradable polyurethane- based foam and a biodegradable polyurethane foam
  • Composition for preparing a biodegradable polyurethane- based foam and a biodegradable polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Example 1: Test with a mixture of 4.85% poly(hydroxybutyrate), 43.69% polyol, 48.56% isocyanate and 1.45% surfactant.

Embodiment 2

[0077] Example 2: Test with a mixture of 9.7% poly(hydroxybutyrate), 38.84% polyol, 48.56% isocyanate and 1.45% surfactant.

Embodiment 3

[0078] Example 3: Test with a mixture of 14.56% poly(hydroxybutyrate), 33.98% polyol, 48.56% isocyanate and 1.45% surfactant.

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Abstract

Composition for preparing a biodegradable polyurethane- based foam and a biodegradable polyurethane foam, comprising mixtures based on poly(hydroxybutyrate) polymer, polyols of renewable source, isocyanates and additives, with the object of preparing biodegradable polyurethane foams. In the process, the poly(hydroxybutyrate) plus the polyol, the isocyanate and the additives are previously mixed in specific mixers; once the homogenization is reached, the mixture is poured in mold for growing. After curing, the resulting product presents foam characteristics, with its density, toughness and cell size varying according to the proportion of the reagents and allowing the manufacture of several products.

Description

technical field [0001] The present invention relates to a biodegradable polymer composition based on polyhydroxybutyrate or its copolymers and comprising polyols of renewable origin, isocyanates and several optional additives, resulting in its density, toughness and cell ) products whose size varies according to the ratio of reactants and allows the preparation of various products obtained by injection and exhibits good finishing. Background technique [0002] Various composite materials are known from the prior art in the form of biodegradable polyurethane foams, comprising biodegradable filler materials mixed with polyols and isocyanates to form polyurethane foams. It is also known to add different additives to said mixture in order to improve its production and / or its properties. [0003] The document JP11236429A2 describes a biodegradable polyurethane composite material composed of a predetermined amount of powder and / or short fiber plant material, molasse and / or lignin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04
CPCC08G2101/0058C08G18/6662C08G2101/005C08L75/04C08L67/04C08G18/4283C08G18/36C08G2110/005C08G2110/0058C08L2666/18C08J9/22C08L2201/06C08L2203/14
Inventor J·F·纳西门托W·M·帕切科斯基J·R·D·L·维奇诺
Owner PHB IND
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