welan gum manufacturer

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Microbial polysaccharides welan gum is extracellular polysaccharide which NX-3 (Alcaligenes sp.secretes, welan gum is made up of glucose, mannose,rhamnose and glucuronic acid. Based on the molecular formula

welan gum manufacturer

due to its hydrogen bond lies in the polymer chain between two indican rings, which leads to solution viscosity increases obviously and its better adhesion on the surface material, at the same time ,which makes whole solution produce a large range of bridge effect, thereby increasing the yield value, keep the solution system in a quiet place or medium shear good adhesiveness, so that it can produce excellent thickening property, rheological property and suspension stability.


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we produce welan gum

1.Welan gum grade
1). oil drilling grade(petroleum grade) xanthan gum.
2). special grade

2. property:
1)high viscosity under low rotation
2) high viscosity under low concentration
3 fine moisture retention
4)peculiar stability under high salinity
5)high temperature resistance

we produce welan gum

Appearance:	white to cream color powder
Odor	mild
pH:	7.0-9.0
Bulk density:	26.25 lbs./ ft3 (500-700kg/m3)
Specific Gravity:	1.45
Particle Size:	90% pass 80 mesh
Viscosity	0.66% in Dl water by Fann 35 at 70ºF	0.66% in Dl water by Fann 35 with 1.0 spring at 185ºF
300rpm	39-49	37-47
200rpm	33-43	32-42
100rpm	29-37	28-35
6rpm	> 17	> 17
3rpm	> 16	> 16

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bio surfactant

bio surfactant Features:
Water-soluble, small solid adsorption;
Better resistance and residual resistance factor, reduce the interfacial tension, better wet ability and reversal for oil rock surface;
A plurality of biological macromolecules can bridge to completely block the throat at the same time, so that the water flow around;
Resistance to salinity 30000mg / L, temperature stable at 120 ℃;
Lower cost, applicability, especially for the presence of the interlayer and the inner heterogeneity of the EOR in the oilfields;
Non-toxic, safety, environmental;
 

bio surfactant

Product dosages
The dosages of product in oilfields is 0.5 to 1%

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Welan gum

Welan gum can also be widely used in cement and concrete, and enhance the water retention of mud, and it does not need to use dispersants like other additives when used as the water retention agent. Welan gum can increase the plasticity, suspension amount, air content, and ability of anti-subsidence and flow characteristics and anti-dehydration of cement. These characteristics of improvements remain unchanged when the temperature increases. Compared with other additives, Welan gum with the lower concentration can achieve a very good effec.

Welan gum

Hebei Ebio Biotechnology Co., Ltd. is a high-tech enterprise who commitments to develop biotechnology, focuses on a variety of high-level microbial polysaccharides and other biogums research and development, production and application technology development

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Welan gum

Welan Gum  is an anionic polysaccharide with excellent thermal stability and retention of viscosity at elevated temperatures.
Others name: Biozan; Kelco Crete.

Welan Gum
Welan Gum Food Grade
Welan Gum Industrial Grade
Welan Gum Cosmetic Grade
Welan Gum Oil drilling Grade

Welan gum

Item		Specifications
Appearance		Off-white to tan powder
High temperature performance		120 degrees Celsius
Acid resistance		This product and citric acid can be used together,function is not affected
Solubility		Hot or cold water
Viscosity (1% Gum to 1% KCL Brookfield, LVT. 60 rpm, spring 3, 25 Celsius)		Min.1500 mPa.s
Boiling point(Celsius)		137-138
Loss on drying		Max.13.0%
Residue on ignition		5%
PH (of 1% solution)		5.0-9.5
Particle size		95% through 80 mesh

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Welan gum

Welan gum is a biopolysaccharide via Alcaligenes fermentation  using starch or other carbohydrates by the method of biological engineering. It is a tetrasaccharide repeating unit consisting of D-glucose, D-glucuronic acid, L-rhamnose, and L-mannose. From the molecular formula, because of its hydrogen in the polymer chain between the two glycosidic rings, resulting in significant increase in viscosity of the solution system to enable it to better adhesion to the surface of the material, the solution system to produce a large Range of the bridge effect, thereby increasing the yield value, in the standing or moderate shear force to keep the solution system better cohesion, it has excellent thickening, rheology and suspension stability. Welan gum is widely used in drilling fluid and completion fluid, self-compacting concrete admixture, textile printing and dyeing, firefighting agent, ink printing, casting coating, detergent, coating agent, pottery and porcelain in oilfield chemistry with its excellent physical and chemical properties. Microcapsules and non-fluorine-based protein and many other industries.

Welan gum

Welan Gum
Item		Specifications
Appearance		Off-white to tan powder
High temperature performance		120 degrees Celsius
Acid resistance		This product and citric acid can be used together,function is not affected
Solubility		Hot or cold water
Viscosity (1% Gum to 1% KCL Brookfield, LVT. 60 rpm, spring 3, 25 Celsius)		Min.1500 mPa.s
Boiling point(Celsius)		137-138
Loss on drying		Max.13.0%
Residue on ignition		5%
PH (of 1% solution)		5.0-9.5
Particle size		95% through 80 mesh

For more information,pls visit http://www.china-ebio.com/company/

Welan gum

Welan gum
1.grade
1). oil drilling grade(petroleum grade) xanthan gum.
2). special grade

2. property:
1)high viscosity under low rotation
2) high viscosity under low concentration
3 fine moisture retention
4)peculiar stability under high salinity
5)high temperature resistance

Welan gum Application:
Welan Gum is an anionic polysaccharide with excellent thermal stability and retention of
viscosity at elevated temperatures. It is used in various industries where high molecular weight
biopolymers are useful. Welan Gums have various oilfield applications, concrete, dry-mixed mortar,petroleum industry,foundry coating, pigment suspensions, cement or concrete viscosifiers, tire sealants and paint thickeners

For more information,pls visit http://www.china-ebio.com/company/