发明授权
- 专利标题: Cellulose dope, process for preparation and method for application thereof
- 专利标题(中): 纤维素涂料,制备方法及其应用方法
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申请号: US675762申请日: 1984-11-28
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公开(公告)号: US4634470A公开(公告)日: 1987-01-06
- 发明人: Kenji Kamide , Kunihiko Okajima
- 申请人: Kenji Kamide , Kunihiko Okajima
- 申请人地址: JPX
- 专利权人: Asahi Kasei Kogyo Kabushiki Kaisha
- 当前专利权人: Asahi Kasei Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX
- 优先权: JPX58-244337 19831226
- 主分类号: D06M15/05
- IPC分类号: D06M15/05 ; C08B1/00 ; C08B16/00 ; C08L1/02 ; D06M101/00 ; D06M101/02 ; D06M101/06 ; D06M101/08 ; D06M101/16 ; D06M101/18 ; D06M101/30 ; D06M101/32 ; D06M101/34 ; C08L1/00
摘要:
Described is a cellulose dope which is an aqueous alkali solution containing substantially at least 3% by weight of cellulose having a degree of polymerization of at least 100, wherein in the .sup.13 C-NMR spectrum of the cellulose, the C.sub.4 -position carbon peak is found at a magnetic field higher by at least 7 ppm than the magnetic field of the C.sub.4 -position carbon peak of solid cellulose attributed to the strong intramolecular hydrogen bond. This dope is prepared by maintaining a mixture comprising 100 weight parts of cellulose, which may have any crystal form, and 10 to 1000 weight parts of a hydrogen bond-cleaving solution at 100.degree. C. to 350.degree. C. under a pressure of 10 to 250 atmospheres, promptly exposing the mixture to the ambient atmosphere, mixing the resulting cellulose with an aqueous alkali solution maintained at a temperature not higher than 50.degree. C., and then stirring the mixture at a temperature not higher than 10.degree. C. to dissolve the cellulose in the aqueous alkali solution. The dope may be used for the manufacture of a shaped article or for coating.
公开/授权文献
- US4089327A Kitchen exhaust system 公开/授权日:1978-05-16