IT1235543B - Biodegradable articles based on starch - Google Patents
Biodegradable articles based on starchInfo
- Publication number
- IT1235543B IT1235543B IT8941002A IT4100289A IT1235543B IT 1235543 B IT1235543 B IT 1235543B IT 8941002 A IT8941002 A IT 8941002A IT 4100289 A IT4100289 A IT 4100289A IT 1235543 B IT1235543 B IT 1235543B
- Authority
- IT
- Italy
- Prior art keywords
- starch
- opt
- phase
- water
- copolymer
- Prior art date
Links
- 229920002472 Starch Polymers 0.000 title abstract 5
- 235000019698 starch Nutrition 0.000 title abstract 5
- 239000008107 starch Substances 0.000 title abstract 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 229920006226 ethylene-acrylic acid Polymers 0.000 abstract 3
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Articles based on starch insol. in water, comprise (i) a phase comprising destructurised starch in the form of particles of ave. no. dia. below 1N; (ii) a phase comprising ethylene-acrylic acid (EAA) copolymer; (iii) a phase comprising IPN (interpenetrated network) obtd. from the interaction between starch and EVA copolymer; and opt. (iv) a water content lower than 6 wt.% (0-2 wt.%) calcd. on the total wt. of the 3 phases. The articles are prepd. by mixing starch and EAA copolymer in wt. ratio 1:9-9:1 (1:4-4:1), water, and opt. urea and/or ammonia, in an extruder heated to 90-150 deg.C, and bringing the water content to a value below 6 wt.%, and opt. ammonia content to below 0.5 wt.%.
Priority Applications (20)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8941002A IT1235543B (en) | 1989-03-09 | 1989-03-09 | Biodegradable articles based on starch |
IL93620A IL93620A0 (en) | 1989-03-09 | 1990-03-02 | Biodegradable articles based on starch and process for producing them |
GR900100160A GR1000578B (en) | 1989-03-09 | 1990-03-07 | Biosoluble materials based on amylum and preparation process |
EP90904276A EP0413798B1 (en) | 1989-03-09 | 1990-03-08 | Biodegradable articles based on starch and process for producing them |
HU902344A HUT56384A (en) | 1989-03-09 | 1990-03-08 | Process for producing biodegradable products on starch base |
DD90338507A DD299280A5 (en) | 1989-03-09 | 1990-03-08 | BIOCHEMICAL ARTICLE BASED ON STAERKE AND METHOD FOR THE PRODUCTION THEREOF |
US07/613,506 US5262458A (en) | 1989-03-09 | 1990-03-08 | Biodegradable articles based on starch and process for producing them |
ES90904276T ES2081975T3 (en) | 1989-03-09 | 1990-03-08 | BIODEGRADABLE ARTICLES BASED ON STARCH AND PROCEDURE FOR ITS PRODUCTION. |
KR1019900702386A KR0169087B1 (en) | 1989-03-09 | 1990-03-08 | Biodegradable articles based on starch and process for producing them |
CN90102132A CN1038422C (en) | 1989-03-09 | 1990-03-08 | Biodegradable articles based on starch and process for producing them |
AU51785/90A AU628495B2 (en) | 1989-03-09 | 1990-03-08 | Biodegradable compositions based on starch and process for producing them |
PCT/EP1990/000375 WO1990010671A1 (en) | 1989-03-09 | 1990-03-08 | Biodegradable articles based on starch and process for producing them |
DK90904276.4T DK0413798T3 (en) | 1989-03-09 | 1990-03-08 | Biodegradable articles based on starch and method of making them |
AT90904276T ATE131505T1 (en) | 1989-03-09 | 1990-03-08 | STARCH-BASED BIODEGRADABLE ITEMS AND PROCESSES FOR THEIR PRODUCTION |
DE69024132T DE69024132T2 (en) | 1989-03-09 | 1990-03-08 | BIODEGRADABLE OBJECTS BASED ON STARCH AND METHOD FOR THEIR PRODUCTION |
CA002028130A CA2028130C (en) | 1989-03-09 | 1990-03-08 | Biodegradable articles based on starch and process for producing them |
BR909004768A BR9004768A (en) | 1989-03-09 | 1990-03-08 | BIODEGRADAVEL ARTICLES BASED ON STARCH AND PROCESS FOR PRODUCTION |
JP2504196A JP2925728B2 (en) | 1989-03-09 | 1990-03-08 | Starch-based biodegradable article and method for producing the same |
FI905511A FI102288B1 (en) | 1989-03-09 | 1990-11-07 | Starch - based biodegradable products and method for their preparation |
NO904880A NO180781C (en) | 1989-03-09 | 1990-11-09 | Process for making articles based on starch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8941002A IT1235543B (en) | 1989-03-09 | 1989-03-09 | Biodegradable articles based on starch |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8941002A0 IT8941002A0 (en) | 1989-03-09 |
IT1235543B true IT1235543B (en) | 1992-09-09 |
Family
ID=11250001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8941002A IT1235543B (en) | 1989-03-09 | 1989-03-09 | Biodegradable articles based on starch |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1235543B (en) |
-
1989
- 1989-03-09 IT IT8941002A patent/IT1235543B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8941002A0 (en) | 1989-03-09 |
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TA | Fee payment date (situation as of event date), data collected since 19931001 |
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