发明申请
- 专利标题: Polyamide Production Method
- 专利标题(中): 聚酰胺生产方法
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申请号: US14437523申请日: 2013-10-23
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公开(公告)号: US20150329672A1公开(公告)日: 2015-11-19
- 发明人: Tomomich Kanda , Tomoaki Shimoda
- 申请人: CHEIL INDUSTRIES INC.
- 优先权: JP2012-233762 20121023; KR10-2013-0118205 20131002
- 国际申请: PCT/KR2013/009486 WO 20131023
- 主分类号: C08G69/30
- IPC分类号: C08G69/30 ; C08G69/26
摘要:
The polyamide production method of the present invention comprises the steps of: producing a low-order condensate by effecting a polycondensation reaction between a dicarboxylic acid component containing between about 5 and about 40 mol. % of terephthalic acid, and a diamine component containing between about 70 and about 100 mol. % of a xylylenediamine in which the content of paraxylylenediamine is between about 50 and about 100 mol. %, under conditions of a reaction temperature of at least about 200° C. and less than about 230° C.; discharging and cooling the low-order condensate at a pressure at or below atmospheric pressure, in an inert gas atmosphere; and subjecting the discharged and cooled low-order condensate to solid state polymerization. The production method makes it possible to obtain a polyamide having outstanding mechanical strength, heat resistance, colour tone and the like without problems such as gelling.
公开/授权文献
- US09840587B2 Polyamide production method 公开/授权日:2017-12-12
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