CA2258843A1 - Biodegradable polymeric mixtures based on thermoplastic starch - Google Patents

Biodegradable polymeric mixtures based on thermoplastic starch

Info

Publication number
CA2258843A1
CA2258843A1 CA002258843A CA2258843A CA2258843A1 CA 2258843 A1 CA2258843 A1 CA 2258843A1 CA 002258843 A CA002258843 A CA 002258843A CA 2258843 A CA2258843 A CA 2258843A CA 2258843 A1 CA2258843 A1 CA 2258843A1
Authority
CA
Canada
Prior art keywords
starch
hydrophobic
polymer
biodegradable polymer
thermoplastic starch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002258843A
Other languages
French (fr)
Other versions
CA2258843C (en
Inventor
Jurgen Loercks
Winfried Pommeranz
Harald Schmidt
Ralf Timmermann
Ernst Grigat
Wolfgang Schulz-Schlitte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BioTec Biologische Naturverpackungen GmbH and Co KG
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2258843A1 publication Critical patent/CA2258843A1/en
Application granted granted Critical
Publication of CA2258843C publication Critical patent/CA2258843C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/005—Processes for mixing polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/26—Cartridge cases
    • F42B5/30—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable

Abstract

For converting native starch or starch derivatives into thermoplastic starch, it is proposed that the starch, which is principally responsible for the conversion, be mixed with at least one hydrophobic, biodegradable polymer. This hydrophobic, biodegradable polymer which serves as a plasticising or swelling agent, can be a polymer from the following list: an aliphatic polyester, a copolyester with aliphatic and aromatic blocks, a polyester amide, a polyester urethane, a polyethylene oxide-polymer or a polyglycol and/or mixtures thereof. During the melting process, when mixing the starch, such as native starch in particular or derivatives thereof, with the hydrophobic, biodegradable polymer as a plasticising or swelling agent, to homogenise the mixture, the water content is to be reduced to < 1 wt. % in relation to the weight of the mixture.
CA002258843A 1996-06-20 1997-06-20 Biodegradable polymeric mixtures based on thermoplastic starch Expired - Lifetime CA2258843C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624641A DE19624641A1 (en) 1996-06-20 1996-06-20 Biodegradable material consisting essentially of or based on thermoplastic starch
DE19624641.5 1996-06-20
PCT/IB1997/000749 WO1997048764A1 (en) 1996-06-20 1997-06-20 Biodegradable material essentially comprising or based on thermoplastic starch

Publications (2)

Publication Number Publication Date
CA2258843A1 true CA2258843A1 (en) 1997-12-24
CA2258843C CA2258843C (en) 2005-04-19

Family

ID=7797496

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002258843A Expired - Lifetime CA2258843C (en) 1996-06-20 1997-06-20 Biodegradable polymeric mixtures based on thermoplastic starch

Country Status (14)

Country Link
US (2) US6235815B1 (en)
EP (1) EP0906367B1 (en)
JP (1) JP2000515566A (en)
KR (1) KR20000016673A (en)
CN (1) CN1091118C (en)
AT (1) ATE221559T1 (en)
AU (1) AU724636B2 (en)
CA (1) CA2258843C (en)
DE (5) DE19624641A1 (en)
DK (1) DK0906367T3 (en)
ES (1) ES2182087T3 (en)
NO (1) NO985609D0 (en)
PT (1) PT906367E (en)
WO (1) WO1997048764A1 (en)

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US7368511B2 (en) * 2003-12-22 2008-05-06 Eastman Chemical Company Polymer blends with improved rheology and improved unnotched impact strength
US7368503B2 (en) 2003-12-22 2008-05-06 Eastman Chemical Company Compatibilized blends of biodegradable polymers with improved rheology

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