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Composite compositions comprising cellulose and polymeric components

A technology of composite materials and compositions, applied in the field of composite materials compositions containing cellulose and polymer components, capable of solving problems such as crosslinking and chain scission, problems, and high costs

Inactive Publication Date: 2007-03-21
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using higher concentrations of initiator can cause undesired side reactions such as cross-linking and chain scission
Moreover, the cost of producing maleated polyolefins with a high ratio of maleated grafts will be quite high
Furthermore, the production of maleic anhydride copolymers containing 3% by weight maleic anhydride functionality by direct copolymerization can be problematic

Method used

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Examples

Experimental program
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Embodiment

[0057] Although the present invention has been specifically illustrated and described with reference to its preferred embodiments, those skilled in the art will understand that various changes can be made in form or details without departing from the spirit and scope of the present invention.

[0058] The following examples are only illustrative, and they are not to be regarded as limiting the scope of the invention described and / or claimed herein.

[0059] Materials used

[0060] WF1-40 mesh oak flour; available from American Wood Fibers of Schofield, Wis. under the trade name Oak 4037.

[0061] PE1-Linear low-density polyethylene (LLDPE), available from Nova under the trade name Sclair  11E1.

[0062] PE2-High Density Polyethylene (HDPE), available from Nova under the trade name Sclair  2907, MI is 5.

[0063] M1-polyethylene / maleic anhydride (MAH) graft copolymer; melt index (MI) = 1.5, density (d) = 0.93g / cm 3 ; Available from DuPont under the trade name Fusabond EMB226D, m...

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Abstract

The present invention is a composite composition comprising cellulosic material in a polymeric matrix comprising a thermoplastic polymer, and at least one compatibilizing copolymer prepared from an olefin and a functional comonomer, and articles prepared from such composites. The composition of the present invention can be useful as a synthetic wood.

Description

[0001] This application claims to protect the benefits of U.S. Provisional Application 60 / 545,868 filed on February 19, 2004. Invention field [0002] The present invention relates to a composition comprising a mixture of a thermoplastic polymer, cellulose fibers and at least one copolymer functioning as a compatibilizer, and articles made therefrom. The present invention particularly relates to such compositions containing ethylene copolymers as compatibilizers. Background of the invention [0003] With the increase in wood prices and the shortage of mature trees, there is a need to find high-quality wood substitutes that can continue to develop in the future. In the past few years, there has been a growing market for polymer-wood composites to replace traditional solid wood products in applications such as decks, windows, fences, interior parts and floor panels. These composite materials generally consist of a mixture of thermoplastic materials and sawdust-like wood particles. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/02C08L97/02C08J3/00C08L23/06C08L23/16
CPCC08L23/025C08L23/16C08L97/02C08L23/06C08L2314/06C08L23/02C08L2205/02C08L51/06C08L2207/062C08L2207/066C08L2666/26C08L2666/06
Inventor D·M·迪恩
Owner EI DU PONT DE NEMOURS & CO
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