Title:
BIODEGRADABLE OIL-PROOF PAPER WITHOUT FLUOROCARBON COMPOUND, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/179306
Kind Code:
A1
Abstract:
The present invention relates to a biodegradable oil-proof paper without a fluorocarbon compound, and a preparation method therefor. The method comprises: first pre-coating cellulose base paper with a modified starch reinforced pre-coating layer, drying same, and then applying a prepared nanocellulose/polyvinyl alcohol (PVA) oil-proof layer. By means of the present invention, the problem of PVA permeation in the process of applying an oil-resistant layer using PVA as a main component is alleviated by means of the interaction between the nanocellulose and the cationic compound in the reinforced pre-coating layer, and the effect of enhancing the oil resistance of PVA in the coating is achieved, so that the oil permeation resistance of the oil-resistant layer is greatly improved; the present invention does not contain any fluorocarbon additive and is environment-friendly, has no toxic effect on the human body, and can be used as oil-proof paper for various purposes.
Inventors:
TONG SHUHUA (CN)
HUA FEIGUO (CN)
ZHANG YU (CN)
TONG LI (CN)
MENG YU (CN)
NI YONGHAO (CN)
HE ZHIBIN (CN)
HUA FEIGUO (CN)
ZHANG YU (CN)
TONG LI (CN)
MENG YU (CN)
NI YONGHAO (CN)
HE ZHIBIN (CN)
Application Number:
PCT/CN2020/079304
Publication Date:
September 16, 2021
Filing Date:
March 13, 2020
Export Citation:
Assignee:
ZHEJIANG JINJIAHAO GREEN NANOMATERIAL CO LTD (CN)
International Classes:
D21H17/36; D21H21/14; D21H23/52
Domestic Patent References:
| WO2006085572A1 | 2006-08-17 | |||
| WO2011114311A1 | 2011-09-22 |
Foreign References:
| CN111519466A | 2020-08-11 | |||
| CN106833139A | 2017-06-13 | |||
| CN108625219A | 2018-10-09 | |||
| CN110593011A | 2019-12-20 | |||
| CN108688285A | 2018-10-23 | |||
| US9034146B2 | 2015-05-19 |
Other References:
WU WEI ; LIU ZEHUA: "The effect of starch on the water and oil resistance of greaseproof paper", TIANJIN PAPER MAKING, 15 March 2017 (2017-03-15), pages 17 - 30, XP055846594
Attorney, Agent or Firm:
KG INTELLECTUAL PROPERTY LAW FIRM (CN)
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