Global Patent Index - EP 0971975 A2

EP 0971975 A2 20000119 - A METHOD OF PRODUCING AN EXPANDED MATERIAL

Title (en)

A METHOD OF PRODUCING AN EXPANDED MATERIAL

Title (de)

VERFAHREN ZUR HERSTELLUNG VON GESCHÄUMTEM MATERIAL

Title (fr)

PROCEDE DE PRODUCTION D'UN MATERIAU EXPANSE OU MOUSSE ET DE CONSTITUANTS, ET APPAREIL POUR METTRE EN OEUVRE CE PROCEDE

Publication

EP 0971975 A2 20000119 (EN)

Application

EP 98912627 A 19980324

Priority

  • GB 9800891 W 19980324
  • GB 9706219 A 19970324

Abstract (en)

[origin: WO9842775A2] A process for forming synthetic expanded or foamed materials, such as acid-cured foams, condensation polymers such as phenolic resins. Catalysts, blowing agents and combinations of the two are described along with apparatus for use in the process. The invention includes a process for the preparation of an expanded or foamed material, which comprises the expansion or foaming and subsequent hardening of a polymer or resin by the admixture of an expandable polymer or resin, a catalyst capable of causing hardening of the polymer or resin, a blowing agent capable of generating a gas within the polymer or resin so as to form cells therein and a surfactant capable of stabilising cells formed within the polymer or resin. The process is characterised in that the surfactant is substantially miscible with the blowing agent and the process involves the step of mixing the blowing agent with the surfactant prior to admixing those components with the resin and/or catalyst.

IPC 1-7

C08J 9/14; B29C 44/34

IPC 8 full level

B29C 44/34 (2006.01); C08J 9/14 (2006.01)

CPC (source: EP)

B29C 44/3442 (2013.01); C08J 9/146 (2013.01); C08J 2361/06 (2013.01)

Citation (search report)

See references of WO 9842775A3

Designated contracting state (EPC)

BE DE ES FR GB IE IT NL SE

DOCDB simple family (publication)

WO 9842775 A2 19981001; WO 9842775 A3 19990107; AU 6740798 A 19981020; EP 0971975 A2 20000119; GB 9706219 D0 19970514; NO 994632 D0 19990923; NO 994632 L 19991109

DOCDB simple family (application)

GB 9800891 W 19980324; AU 6740798 A 19980324; EP 98912627 A 19980324; GB 9706219 A 19970324; NO 994632 A 19990923