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Scogin® LDH

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Scogin® LDH is a low–molecular weight sodium alginate polymer derived from brown seaweed. It is used as a thickener and gelling agent in industrial applications.

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Product Overview

Scogin® LDH is a biodegradable alginate polymer originating from sustainably managed seaweed farms. Scogin® LDH is valued as a binder for several industrial applications, including adhesives, inks, and coatings that require highly-functional biocontent in their formulations. In these applications, Scogin® LDH may function as an additive to provide gelling, stability, and thickening. When added to water at 1 wt%, Scogin® LDH forms solutions with a viscosity of 50–70 mPa·s. An alginate-based gel will also form if calcium is introduced to this solution.

Scogin® LDH also has uses in several other industrial applications, including encapsulation, paper and board manufacturing, and water treatment.

In wastewater treatment applications, Scogin® LDH is useful as a flocculant, where flocs and sediments can be disposed of in a more cost-efficient manner since it can then be treated as organic waste. 

Scogin® LDH also has excellent film-forming properties making it is useful as a binder in paper and board manufacturing. Scogin® LDH can be used for paper sizing applications or to form specialty coatings with a low propensity for ignition. It may also be used as a raw material in bioplastic fabrication. Scogin® alginates, likeScogin® LDH, can also entrap or encapsulate liquids, oils, and particles, making them effective encapsulating agents for active ingredients used in agriculture and other industrial processes. 

Applications

Rheology modification and stabilization for coatings, inks, and adhesives 
Encapsulation of agricultural and industrial active ingredients 
Bioplastics development 
Flocculation of wastewater 
Paper sizing and coating 

Features & Benefits

Naturally sourced and biodegradable sodium alginate polymer 
Provides stability for emulsions, dispersions, and suspensions 
Good solubility in both cold and hot water 
Rheology modification and gel formation properties 
Gelation triggered only by addition of calcium; no heat is required  
Excellent film-forming properties 
Improves flocculation performance when used with metal-based flocculants 
Encapsulates active ingredients 

Problems Solved

Insufficient viscosity for coating, ink, and adhesive formulations 
Instability within industrial emulsions, dispersions, and suspensions 
Difficulty forming gels due to heating requirements 
Reliance on fossil fuel–based additives and binders 

Product Specifications

Loss on drying (%): 10–15 

pH (1% in water): 6.5–8.5 

Viscosity (1% in water, mPa·s): 50–70 

Particle size (25 mesh, % min): 99 

Particle size (36 mesh, % min): 96 

As (max): 3 mg 

Pb (max): 5 mg 

Hg (max): 1 mg 

Cd (max): 1 mg 

Total heavy metals (max): 20 mg 

Primary Chemistry: Sodium alginate 

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