JPS5622324A - Biodegradable agricultural multifilm - Google Patents

Biodegradable agricultural multifilm

Info

Publication number
JPS5622324A
JPS5622324A JP5258780A JP5258780A JPS5622324A JP S5622324 A JPS5622324 A JP S5622324A JP 5258780 A JP5258780 A JP 5258780A JP 5258780 A JP5258780 A JP 5258780A JP S5622324 A JPS5622324 A JP S5622324A
Authority
JP
Japan
Prior art keywords
polyester
amide
low
ester
polyamide
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
JP5258780A
Other languages
Japanese (ja)
Other versions
JPS598365B2 (en
Inventor
Yutaka Tokiwa
Tomoo Suzuki
Yoshimasa Takahara
Tadanao Ando
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP5258780A priority Critical patent/JPS598365B2/en
Publication of JPS5622324A publication Critical patent/JPS5622324A/en
Publication of JPS598365B2 publication Critical patent/JPS598365B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: An agricultural multifilm designed for displaying biodegradability in natural environment or under aerobic conditions, by forming the film from a polyester-amide of a specific structure.
CONSTITUTION: Auxiliary additives such as a plasticizer and a filler are added to a molding material comprising a copolymer consisting of a plurality of alternately bonded blocks A and B, wherein A is an ester block comprising a low MW aliphatic polyester and B is an amide block comprising a low MW aliphatic polyamide. The resulting mixture is formed into sheets by use of, for example, an extruder or a calendering machine. In order to effect the ester-amide exchange in the preparation of said copolymer, a mixture of the polyester and the polyamide is heated in an inert gas to a temperature higher than any of their melting points, and the reaction is continued until the reaction product shows a distinct m.p. depression from the boiling points of the materials.
COPYRIGHT: (C)1981,JPO&Japio
JP5258780A 1980-04-21 1980-04-21 Biodegradable agricultural mulch film Expired JPS598365B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5258780A JPS598365B2 (en) 1980-04-21 1980-04-21 Biodegradable agricultural mulch film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5258780A JPS598365B2 (en) 1980-04-21 1980-04-21 Biodegradable agricultural mulch film

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2689178A Division JPS54119594A (en) 1978-03-09 1978-03-09 Biodegradable film

Publications (2)

Publication Number Publication Date
JPS5622324A true JPS5622324A (en) 1981-03-02
JPS598365B2 JPS598365B2 (en) 1984-02-24

Family

ID=12918917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5258780A Expired JPS598365B2 (en) 1980-04-21 1980-04-21 Biodegradable agricultural mulch film

Country Status (1)

Country Link
JP (1) JPS598365B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0641817A2 (en) * 1993-08-12 1995-03-08 Bayer Ag Thermoplastic biodegradable aliphatic polyesteramides
US5464878A (en) * 1993-06-11 1995-11-07 Camelot Technologies, Inc. Degradable polymeric form and process for making
WO1997040116A1 (en) * 1996-04-22 1997-10-30 Bayer Aktiengesellschaft Use of biodegradable polyester amides as compostable melt adhesives
US5703177A (en) * 1994-12-16 1997-12-30 Ems-Inventa Ag Partially crystalline block copolyester-polyamides
US6255451B1 (en) 1997-02-17 2001-07-03 Bayer Aktiengesellschaft Degradation of biologically degradable polymers using enzymes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464878A (en) * 1993-06-11 1995-11-07 Camelot Technologies, Inc. Degradable polymeric form and process for making
EP0641817A2 (en) * 1993-08-12 1995-03-08 Bayer Ag Thermoplastic biodegradable aliphatic polyesteramides
EP0641817A3 (en) * 1993-08-12 1996-08-07 Bayer Ag Thermoplastic biodegradable aliphatic polyesteramides.
US5703177A (en) * 1994-12-16 1997-12-30 Ems-Inventa Ag Partially crystalline block copolyester-polyamides
WO1997040116A1 (en) * 1996-04-22 1997-10-30 Bayer Aktiengesellschaft Use of biodegradable polyester amides as compostable melt adhesives
US6255451B1 (en) 1997-02-17 2001-07-03 Bayer Aktiengesellschaft Degradation of biologically degradable polymers using enzymes

Also Published As

Publication number Publication date
JPS598365B2 (en) 1984-02-24

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