HYDROXYPROPYL GUAR
HYDROXYPROPYL GUAR
CAS: 39421-75-5
Molecular Formula:
HYDROXYPROPYL GUAR - Names and Identifiers
HYDROXYPROPYL GUAR - Synthesis of hydroxypropyl guar gum by phase transfer catalysis
from hownet
Author:
Xiong Rongchun , Chen Jianming , Zhou Nan , changmingzhu , Wei Gang
Abstract:
hydroxypropyl guar gum was synthesized by phase transfer catalysis with cetylammonium chloride as catalyst, reaction time and stirring speed, the best synthesis conditions are as follows: guar gum 3g, propylene oxide 1~2g, cetyl ammonium chloride 0.4~0.5g,pH value 10~10.5, the reaction temperature was 45~50 ℃ and the reaction time was 3~4H. The results showed that the hydroxypropyl guar gum had higher viscosity, dissolution rate, water insoluble content, colloid transparency and stability than guar gum powder.
Key words:
guar hydroxypropyl guar gum Chemical modification phase transfer catalysis method
DOI:
10.3969/j.issn.1671-4628.2005.01.010
cited:
year:
2005
Last Update：2024-01-02 23:10:35
HYDROXYPROPYL GUAR - Preparation and characterization of hydroxypropyl guar gum
from titanium academic
Author:
Abstract:
guar gum (guar gum) is a natural galactomannan, its water-soluble and thickening is very good, widely used as thickener, demulsifier and so on. Powder Gum dissolution is slow, high water insoluble content, viscosity is not easy to control, people often use chemical means to change its physical and chemical properties to meet the actual needs of industrial production, hydroxypropylation is one of the effective means, however, the characterization of hydroxypropylation is difficult. S.
Key words:
guar hydroxypropyl guar gum degree of substitution NMR
DOI:
10.3969/j.issn.1004-1656.2004.01.023
cited:
year:
2004
Last Update：2023-08-16 22:09:08
HYDROXYPROPYL GUAR - Screening and impurity removal device for producing Super hydroxypropyl guar gum powder
from Palm Bridge research
patent type:
utility model
Application (patent) number:
CN201821117493.7
application date:
20180716
Public/Announcement Number:
CN208727978U
Public/announcement date:
20190412
applicant (patent):
Yantai younitai Electronic Technology Co., Ltd.
inventor:
National and provincial code:
CN370684
Abstract:
The utility model discloses a screening and impurity removal device for producing Super hydroxypropyl guar gum powder, which comprises a casing and a second screening chamber, and a through hole is provided at the top of the casing, the two ends of the through holes are welded on both sides of the first screening chamber, the top of the first screening chamber is provided with an opening, the inside of the opening is welded with a feed funnel, and the top of the first screening chamber is provided with a small hole, A push rod is embedded in the inside of the small hole, one end of the push rod is connected with a linkage rod through a shaft, the other end of the linkage rod is hinged with a moving plate, and one side of the moving plate is sliding connected with a sliding rail, the slide rail is fixed on one side of the supporting rod by a rivet, one end of the supporting rod is fixed on the side wall of the first screening chamber by a screw, and is provided by a structure such as a large screen, a small screen, a suction pipe, a mixing blade, a magnet block, etc, through the setting of the two-layer screen, the screened product is more pure, and the magnet block can be adsorbed
Last Update：2023-08-16 22:09:08
HYDROXYPROPYL GUAR - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| production method | natural plant gum guar gum powder is chemically modified. |
Last Update：2024-04-09 19:05:07
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