Global patent index - EP 1082364 A1

EP 1082364 A1 2001-03-14 - METHOD FOR PRODUCING WATER EXPANDABLE STYRENE POLYMERS

Title (en)

METHOD FOR PRODUCING WATER EXPANDABLE STYRENE POLYMERS

Title (de)

VERFAHREN ZUR HERSTELLUNG WASSEREXPANDIERBARER STYROLPOLYMERISATE

Title (fr)

PROCEDE DE FABRICATION DE POLYMERES STYRENE EXPANSIBLES A L'AIDE D'EAU

Publication

EP 1082364 A1 (DE)

Application

EP 99915669 A

Priority

  • DE 19812857 A
  • EP 9901839 W

Abstract (en)

[origin: DE19812857A1] The invention relates to a method for producing styrene polymers containing water as the only inflating agent by polymerising styrene in an aqueous suspension in the presence of between 0.1 and 5 weight % of a thermolabile organic compound, which when the temperature is raised decomposes into amphiphilic and/or hydrophilic compounds, whereby the maximum polymerisation temperature is higher than the decomposition temperature of the thermolabile compound.

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

C08F 12/04; C08J 9/20

IPC 8 full level (invention and additional information)

C08F 2/18 (2006.01); C08F 12/08 (2006.01); C08J 9/20 (2006.01)

CPC (invention and additional information)

C08J 9/20 (2013.01); C08J 2325/02 (2013.01)

Citation (search report)

See references of WO 9948936A1

Designated contracting state (EPC)

AT DE ES FR GB IT NL

EPO simple patent family

DE 19812857 A1 19990930; EP 1082364 A1 20010314; JP 2002507638 A 20020312; WO 9948936 A1 19990930

INPADOC legal status

2003-05-02 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20030305

2001-03-14 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000824

2001-03-14 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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