Title:
メラミン/ホルムアルデヒドフォーム材の製造方法
Document Type and Number:
Japanese Patent JP2013540854
Kind Code:
A
Abstract:
The invention relates to processes for producing melamine-formaldehyde foams comprising the consecutive steps a) and b): a) heating a mixture comprising a melamine-formaldehyde precondensate, a curative and a blowing agent to foam up and crosslink said mixture, and b) tempering the foam obtained in step a), wherein it is essential to the present invention that - step a) utilizes a precondensate which has a melamine:formaldehyde molar ratio in the range from 1:2.1 to 1:3.9, and - which has a sulfite group content, based on the total weight of the melamine-formaldehyde precondensate, in the range from 0% to 1% by weight, and - said tempering in step b) is effected at a temperature in the range from 230 to 290°C, and also to melamine-formaldehyde foams obtainable according to the processes of the invention, and to uses thereof.
More Like This:
| WO/2011/042377 | SILYLATED MELAMINE FORMALDEHYDE RESINS |
| WO/1993/004121 | AMINOPLAST RESIN OR AMINOPLAST RESIN PRECURSOR |
Inventors:
Hoast Baumgart
Bettina Wester
Jens-Uwe Siaholz
Bettina Wester
Jens-Uwe Siaholz
Application Number:
JP2013528798A
Publication Date:
November 07, 2013
Filing Date:
August 31, 2011
Export Citation:
Assignee:
BASF SE
International Classes:
C08G12/32; C08J9/04
Domestic Patent References:
| JPS56152848A | 1981-11-26 | |||
| JP2004510042A | 2004-04-02 | |||
| JP2004510041A | 2004-04-02 | |||
| JP2005119269A | 2005-05-12 | |||
| JP2013525553A | 2013-06-20 |
Foreign References:
| US4334971A | 1982-06-15 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Takuya Kuno