CAS 96949-22-3 Welan Gum For Cement Mortar Concrete Oil Drilling Petroleum Industry CAS NO.96949-22-3

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Welan Gum For Cement Mortar Concrete Oil Drilling Petroleum Industry CAS 96949-22-3

 

Description:
Welan Gum is an anionic polysaccharide with excellent thermal stability and retention of viscosity at elevated temperatures. Welan Gum exhibits superior temperature stability over 200° F in fresh water and low pH fluids. Welan Gum is a tan colored dry powder with a density of 26.25 lbs/ft³. Welan Gum is used in various industries where high molecular weight biopolymers are useful.

Application:
WELAN GUM biopolyer is a high efficiency, pseudoplastic viscosifier and suspension agent used in water based drilling, workover and completion fluids. Welan gum is also used in hydraulic fracturing fluids and cementing grouts, foundary coating, pigment suspensions, cement or concrete viscosifier, tire sealant and paint thickeners.

 

Physical requirements:

 

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

 

Welan gum is a biological polysaccharide obtained by biochemical fermentation by strains extracted from the culture solution of Alkalibacterium with starch and other carbohydrates as the main raw materials. It is a tetrasaccharide repeating unit composed of D-glucose, D-glucuronic acid, L-rhamnose, and L-mannose. From the molecular formula, because its hydrogen bond exists between the two glycosidic rings on the polymer chain, the viscosity of the solution system increases significantly, making it better adhere to the surface of the substance, so that the entire solution system produces a It has a wide range of bridge effect, thereby increasing the yield value, maintaining good cohesion of the solution system under standing or moderate shear force, making it have excellent thickening and rheological suspension stability.

Warm wheel glue has the following characteristics:

 

Higher viscosity at low concentrations

 

Higher viscosity at low speed

 

Excellent water holding capacity

 

Special stability under high salt conditions

 

high temperature resistance

 

Excellent rheological properties

 

Items	Specification
Appearance	Off white powder
Viscosity (1% H2O,, 25℃) mpa.s	1500-3500
Loss on drying %	6.0-16.0
Ash %	≤13

 

Packaging	1kg-15kg packing	2 PE bag inside + 1 foil bag outside in carton
	25kg-50kg packing	2 PE bag inside + 1 foil bag outside in drum
	Other packing	Customized packing
Drum Size	D38cm*H60cm or customized, 25 kg/ drum
Shipping	1-50kg	International Express	Fast and convenient	Door to Door
	50-500kg	Air Transportation	Fast and cheap	To Air Port
	Above 500kg	Sea Transportation	Cheap and convenient	To Port

 

 

 

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