Detailed Product Description

GENERAL DESCRIPTION HYDROGEL BC is a rheological thickener for use as a high quality suspending agent which is used extensively for paints, coatings, sealants, etc. HYDROGEL BC is a highly beneficiated clay- based additive which develops unique rheological properties in systems based on PVA acrylic and other aqueous emulsions. HYDROGEL BC is sucesfully used in the preparation of mineral plasters, all exterior paints, latex systems, water-borne interior paints, water based flexo inks, oil-in-water emulsions, polishes, cleaners, ceramic compounds and cosmetics. BENEFITS " Is available in rapidly dispersing and gelling grade for addition to paint formulation in the mill base." Can easily be dispersed in cold water." Is used in aqueous paint sysyems to give the paint adequate storage stability and the correct rheology. " Is easily welled by wsier. High shear forces are required to achieve complate required gelation within 5-6 minutes. APPLICATIONS High and low pH will lead to dispersion difficulties and long hydration times. If the pH distribution value would be less than 5 or more than 10,5 , it's recommended to examine preliminary to make use of. Recommended use of HYDROGEL BC is 0,3 to 1 % based on the total system weight. CHEMICAL & PHYSICAL DATA CHEMICAL COMPOSITION Beneficially activated Aluminiumhydrosilicate FORM Free flowing powder COLOR Cream colured pH ( 2 % Suspension) 8,5 ± 0,5 LOOSE BULK DENSITY 450 + 50 kg / m³ PARTICLE SIZE < 5 µ (after dispersing in water) The suqqested order of addition is as followinq: 1) Water (pH: 6,5-8,5 optimum) 2) HYDROGEL BC mix at highest speed for 5-8 minutes wtth a little ammomsrn addition. 3) Mix defoamers, preservatives, wetting agents, dispersants etc.4) Glycols and pigment (disperse)5) Letdown FEATURES / ADVANTAGES FEATURES Small ultimate size of particles ADVANTAGES High degree disperses in cold and hot water High purity, excellent consistency Not effected by high temperature Not flammable, not toxic No yellowness by time Not effected by high shear mixingFEATURES High gel strength in water based systems ADVANTAGES Allows extra water to be included in paint formulation Cost effective stabilization of paints Excellent viscosity stability Improved storage properties High brush dray and film build. Prevent sag or run in applied films.FEATURES Viscosity - Rheology Relationship ADVANTAGES Viscosity of aqueous solutions of HYDROGEL BC increases rapidly with concentrationsFEATURES Temperature effect ADVANTAGES The viscosity of HYDROGEL BC solutions changes with temperature,increasing when cooled, decreasing when warmed.STORAGE No detorioration of the product has been observed in a 12 months time interval. Recommended storage condition is in dry and sheltered place in closed bags. PACKAGE HYDROGEL BC is available in 20 kg. multiple paper bags. TOXICITY DATA No toxicity of HYDROGEL BC has been reported yet. Minimal irritation for eyes is observed and irritation for skin is negligible. NOTS : THE KNOWLEDGE IN THIS DATA SHEET SHOULD BE CONSIDERED AS GENERAL INFORMATION ONLY AND NOT USED FOR PURCHASE SPECIFICATIONS