METHOD FOR PROCESSING PARTICULATE RAW POLYOXYMETHYLENE
    1.
    发明申请
    METHOD FOR PROCESSING PARTICULATE RAW POLYOXYMETHYLENE 审中-公开
    一种用于处理颗粒ROHPOLYOXYMETHYLEN

    公开(公告)号:WO2013020830A3

    公开(公告)日:2013-05-30

    申请号:PCT/EP2012064767

    申请日:2012-07-27

    CPC classification number: C08G2/00 C08G2/18 C08G2/38 C08L59/00

    Abstract: The invention relates to a method for processing particulate raw polyoxymethylene, comprising the following steps: (a) adding the particulate raw polyoxymethylene to an extraction column (13), wherein the extraction column (13) is operated at a pressure in the range from 1 to 6 bar; (b) adding a polar extracting agent to the extraction column (13) at a temperature in the range from 95 to 140 °C and a pressure in the range from 1 to 6 bar, wherein 10 to 1000 ppm, in relation to the added quantity of polar extracting agent, of a buffer substance that buffers in the pH range from 7.5 to 11.5 is added to the extraction column.

    Abstract translation: 本发明涉及一种用于颗粒状Rohpolyoxymethylen的处理的方法,包括以下步骤:(a)将颗粒状Rohpolyoxymehtylens在萃取塔(13),其中,所述萃取柱(13)以在1的范围内的压力下操作至6巴,( b)加入一种极性萃取剂(以在95至140℃的温度下萃取柱13)和在该范围内的压力为1〜6巴,其中(在萃取塔13)10至1000ppm,基于提供给 极性萃取剂的量,其缓冲在pH范围为7.5至11.5的缓冲剂,加入。

    3.
    发明专利
    未知

    公开(公告)号:DE502006004820D1

    公开(公告)日:2009-10-22

    申请号:DE502006004820

    申请日:2006-10-17

    Applicant: BASF SE

    Abstract: The present invention relates to novel and improved polyamides composed of meta-xylylenediamine and having an amino end group content of less than 15 mmol/kg. Also found have been processes for preparing these polyamides composed of meta-xylylenediamine and adipic acid and having an amino end group content of less than 15 mmol/kg, which comprises reacting salt solutions of adipic acid and m-xylylenediamine at temperatures of from 80 to 300° C. and a pressure of from 1 to 20 bar with removal of water.

    Amorphe Polyamide
    4.
    发明专利

    公开(公告)号:DE102009035974A1

    公开(公告)日:2011-02-17

    申请号:DE102009035974

    申请日:2009-08-04

    Applicant: BASF SE

    Abstract: Die Erfindung betrifft thermoplastische Formmassen, enthaltend A) 35 bis 100 Gew.-% eines amorphen Polyamids, aufgebaut aus A) 30 bis 100 Gew.-% Einheiten, die sich von aliphatischen Dicarbonsäuren und tetraalkylsubstituierten cycloaliphatischen Diaminen ableiten, A) 0 bis 70 Gew.-% Einheiten, welche sich von weiteren Polyamid bildenden Monomeren ableiten, verschieden von A), B) 0 bis 75 Gew.-% weitere Zusatzstoffe, wobei die Summe der Gewichtsprozente A) und B) 100% ergeben.

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