Invention Grant
US07754797B2 Non-fibrous polymer solution of para-aramid with high relative viscosity
有权
对位芳族聚酰胺的非纤维聚合物溶液具有较高的相对粘度
- Patent Title: Non-fibrous polymer solution of para-aramid with high relative viscosity
- Patent Title (中): 对位芳族聚酰胺的非纤维聚合物溶液具有较高的相对粘度
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Application No.: US10556152Application Date: 2004-05-04
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Publication No.: US07754797B2Publication Date: 2010-07-13
- Inventor: Anton J. J. Hendriks , Jan M. Surquin , Mirjam E. Oldenzeel , René Journee , Vincent A. Van Bommel
- Applicant: Anton J. J. Hendriks , Jan M. Surquin , Mirjam E. Oldenzeel , René Journee , Vincent A. Van Bommel
- Applicant Address: NL Arnhem
- Assignee: Teijin Aramid B.V.
- Current Assignee: Teijin Aramid B.V.
- Current Assignee Address: NL Arnhem
- Agency: Oliff & Berridge, PLC
- Priority: EP03010367 20030508
- International Application: PCT/EP2004/004695 WO 20040504
- International Announcement: WO2004/099476 WO 20041118
- Main IPC: C08K3/00
- IPC: C08K3/00 ; C08G73/10 ; C08G69/26

Abstract:
The invention relates to a non-fibrous polymer solution essentially consisting of 1 to 8 wt. % para-aramid, at least 50 mole % of the aromatic moieties thereof being unsubstituted, in a mixture of a) a polar amide solvent selected from N-methyl-2-pyrrolidone, N,N′-dimethyl-formamide, N,N′-dimethylacetamide, tetramethylurea, and mixtures thereof; b) between 0.7 mole of an alkali or alkaline earth metal chloride per mole amide groups of the para-aramid and 7.5 wt. % of the alkali or alkaline earth metal chloride, and c) water; and wherein at least 50 wt. % of the formed hydrochloric acid has been neutralized to obtain a solution having a dynamic viscosity which is at least a factor three smaller than the dynamic viscosity of the polymer solution without neutralization. The invention further pertains to a process making the same and para-aramid pulp-like fiber, paper and film made from said polymer solution.
Public/Granted literature
- US20060235104A1 Non-fibrous polymer solution of para-aramid with high relative viscosity Public/Granted day:2006-10-19
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