PROCESS FOR PREPARING A POLYAMIDE, A NYLON SALT TO BE USED THEREIN AND A PROCESS FOR MAKING THE SALT

Title:

PROCESS FOR PREPARING A POLYAMIDE, A NYLON SALT TO BE USED THEREIN AND A PROCESS FOR MAKING THE SALT

Document Type and Number:

WIPO Patent Application WO/2016/062579

Kind Code:

A3

Abstract:

The present invention relates to a process for preparing a polyamide, a polyamide material obtainable by the said process, a nylon salt to be used therein, and a process for making the nylon salt. The process for preparing the polyamide is a direct solid state polymerization process. The salt used herein is a granulate material, prepared by a process, comprising spraying an aqueous solution comprising a diamine and a dicarboxylic acid dissolved in an aqueous medium, or an aqueous slurry comprising a diammonium dicarboxylate salt dispersed in an aqueous medium directly obtained from such an aqueous solution, onto or in a fluidized bed of diammonium dicarboxylate salt particles, while evaporating the aqueous medium, thereby forming a granulate salt material.

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Inventors:

LAARHOVEN VAN BAS (NL)
STOELWINDER CHRISTIIAN JOHANNES CORNELIS (NL)
HELMSING MARK (NL)

Application Number:

PCT/EP2015/073639

Publication Date:

June 23, 2016

Filing Date:

July 29, 2015

Export Citation:

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Assignee:

DSM IP ASSETS BV (NL)

International Classes:

C08G69/28; C08G69/26; C08G69/30

Domestic Patent References:

WO2013014236A1

2013-01-31

Foreign References:

EP0455066A1	1991-11-06
EP0971869A1	2000-01-19
GB801733A	1958-09-17
EP0812338A1	1997-12-17

Attorney, Agent or Firm:

PLOEG VAN DER, Antonius, Franciscus M.J. (AA Echt, NL)

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