The invention relates to a process for making a modified thermoplastic polyester by reacting a thermoplastic polyester with a nitrogen-containing compound, wherein the thermoplastic polyester is first contacted in the solid state with an Inert gas atmosphere containing at least one amino-compound of formula H
2
N—R—(X)
n
, wherein n is an integer≧0, R=a linear, branched or cyclo-aliphatic or aromatic residue comprising 1-24 C-atoms and optionally containing hetero atoms, X═—NH
2
or another functional group reactive with the polyester, at a temperature T(a) between room temperature and the melting point T
m
of the polyester, during at least 1 s; and then heated to a temperature T(b) between T(a) and T
m
, during up to 10 hours; and thereafter solid state polymerised at a temperature T(c) between (T
m
−50) and T
m
, during up to 100 hours, where T(a)
本发明涉及一种通过使热塑性聚酯与含氮化合物反应来制造改性热塑性聚酯的工艺,其中热塑性聚酯首先在固态下与惰性气体环境接触,惰性气体环境中至少含有一种式 H
2
N-R-(X)
n
其中 n 为整数≧0,R=线性、支链或环脂肪族或芳香族残基,由 1-24 个 C 原子组成,可选含有杂原子,X═-NH
2
或与聚酯反应的其他官能团,温度 T(a) 介于室温和熔点 T
m
之间的温度 T(a),持续至少 1 秒;然后加热至介于 T(a) 和 T(m)之间的温度 T(b)
m
之间的温度 T(c)进行固态聚合。
m
-50)和 T
m
之间的温度 T(c)进行固态聚合,时间不超过 100 小时,其中 T(a)
AMIDO PEROXYCARBOXYLIC ACIDS FOR BLEACHING
申请人:UNILEVER PLC
公开号:EP0724568B1
公开(公告)日:1998-11-04
Aromatic amide groups-containing diamines and polymers in which these diamines are incorporated
申请人:AKZO N.V.
公开号:EP0277376B1
公开(公告)日:1991-02-27
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