Global patent index - EP 1000119 A1

EP 1000119 A1 2000-05-17 - THERMOPLASTIC MIXTURE WITH A STARCH BASE, FOR PRODUCING BIODEGRADABLE MOULDED BODIES

Title (en)

THERMOPLASTIC MIXTURE WITH A STARCH BASE, FOR PRODUCING BIODEGRADABLE MOULDED BODIES

Title (de)

THERMOPLASTISCHE MISCHUNG AUF STÄRKEBASIS ZUR HERSTELLUNG VON BIOLOGISCH ABBAUBAREN FORMKÖRPERN

Title (fr)

MELANGES THERMOPLASTIQUES A BASE D'AMIDON SERVANT A PRODUIRE DES CORPS MOULES BIODEGRADABLES

Publication

EP 1000119 A1 (DE)

Application

EP 98939538 A

Priority

  • DE 19729272 A
  • EP 9803920 W

Abstract (en)

[origin: DE19729272A1] The invention relates to a thermoplastic mixture with a starch base, for producing biodegradable moulded bodies with improved properties, preferably improved mechanical properties. The inventive thermoplastic mixture can be obtained by providing and mixing; A) 100 weight parts of any native, chemically modified, fermentative starch which is recombinant and/or produced by biotransformation and corrected to a water content of zero per cent by calculation, and/or derivatives of said starches, B) optionally up to 100 weight parts of a physiologically harmless, biodegradable, thermoplastically processable polymeric material which is different from A), C) 1 to 100 weight parts of water, D) at least one plasticiser in a quantity of between 10 weight parts to half of the sum of the weight parts of A) and B), E) at least one phosphate, preferably a phosphoric acid salt, in a quantity of between 0.01 weight parts and (A)+B))/10 weight parts, and F) optionally, up to (A)+B)) weight parts of other usual additives. At least the mixing of constituents A and A) is carried out with the introduction of heat and mechanical energy, preferably at a high temperature with shearing forces being applied to the thermoplastic mixture simultaneously.

IPC 1-7 (main, further and additional classification)

C08L 3/00; A22C 13/00; B65D 65/46; C08B 31/06; C08K 3/22

IPC 8 full level (invention and additional information)

B65D 65/46 (2006.01); A22C 13/00 (2006.01); C08B 31/06 (2006.01); C08J 5/18 (2006.01); C08K 3/32 (2006.01); C08K 5/053 (2006.01); C08L 3/00 (2006.01); C08L 5/00 (2006.01); C08L 5/14 (2006.01); C08L 89/00 (2006.01)

CPC (invention and additional information)

C08J 5/18 (2013.01); C08K 5/053 (2013.01); C08L 3/00 (2013.01); C08J 2303/00 (2013.01); C08L 5/00 (2013.01); C08L 5/14 (2013.01); C08L 89/00 (2013.01); C08L 89/005 (2013.01); C08L 2201/06 (2013.01)

Combination set (CPC)

  1. C08K 5/053 + C08L 3/00
  2. C08L 3/00 + C08L 2666/02

Citation (search report)

See references of WO 9902595A1

Designated contracting state (EPC)

BE DE ES FR GB IT NL

EPO simple patent family

DE 19729272 A1 19990114; DE 19729272 C2 20020110; CA 2295637 A1 19990121; EP 1000119 A1 20000517; HU 0003025 A2 20001228; JP 2001509525 A 20010724; PL 338049 A1 20000925; WO 9902595 A1 19990121

INPADOC legal status

2004-12-08 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20041006

2001-09-26 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010808

2001-04-11 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: CELANESE VENTURES GMBH

- Ref Legal Event Code: RAP1

2000-07-26 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: AXIVA GMBH

- Ref Legal Event Code: RAP1

2000-05-17 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000209

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE ES FR GB IT NL