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    Kuraray Poval™ 6-88 banner
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    KurarayKuraray Poval™ 6-88
    • Polymer Name:Polyvinyl Alcohol (PVOH)
    • Functions:Resin, Binder, Coupling Agent, Binder & Resin, Adhesion Promoter
    • Chemical Family:Polyvinyl Alcohols & Esters, Vinyls, Vinylics & Vinyl Derivatives
    KURARAY POVAL™ 6-88 by Kuraray is a polyvinyl alcohol (PVOH) having varying degree of polymerization and hydrolysis. It is a water-soluble polymer manufactured by alcoholysis of polyvinyl acetate. It is notable for its good bonding strength and pigment binding capacity because PVAs have such good cohesion and good adhesion to fibers, fillers as well as pigments. KURARAY POVAL™ 6-88 is used in a similar manner as natural products such as casein as well as starch and its degraded derivatives (for example dextrin) as raw material for the production of aqueous adhesive solution. In comparison to dextrin and casein it has the advantage of a more uniform chemical structure and greater adhesion, being obtained with minimum raw material requirements. It features water-solubility, excellent film forming characteristics, high tensile strength and elasticity, as well as resistance against organic solvents and dispersing power. For the modification of aqueous adhesives its aqueous solution can be added to polymer emulsions already stabilized with polyvinyl alcohol which affects the extension of the open time, increase of the setting speed and influence on the rheology. It is biodegradable and recyclable. KURARAY POVAL™ 6-88 is used in producing silicon base paper that are further used as release paper for PSA labels and also in remoistenable adhesives which are employed mainly in the paper processing industry, films applications.
    Berolan LP-W2 banner
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    Berolan VertriebsgesBerolan LP-W2
    • Functions:Plasticizer, Foaming Agent, Wetting Agent
    • Chemical Family:Sulfates, Sodium Salts
    • End Uses:Building Materials
    Berolan LP-W2 is a pure sodium lauryl sulfate that has been spray-dried particularly finely. Due to the particularly high fineness, an excellent distribution in dry mortar can be achieved. This also leads to a particularly high effectiveness. Berolan LP-W2 is a high-performance air-entraining agent and an excellent wetting and plasticizing agent for mortar and plasters. Berolan LP-W2 is an excellent foaming agent and plasticizer for the manufacture of ready-to-use plasters, mortar compounds, and filling compounds containing gypsum, lime or cement. Berolan LP-W2 effects the formation of particularly fine, stable air bubbles, thereby considerably improving the General performance of resistance, water retention as well frost stability. Tendency towards contraction and crack formation is also reduced as is wear and tear to mixing apparatus and conveyors. Due to its surface active character Berolan LP-W2 additionally promotes wetting of binders and other ingredients, thus entailing a swifter wetting and dispersion and reducing the tendency towards aggregation during mixing. The necessary quantity depends on the desired effect but generally is between 0.005 – 0.1 %, calculated on the dry mix. In the majority of cases 0.01 % proves sufficient to obtain adequate aeration. The equipment available must also be taken into account, where batch operated mixers generally feed more air into the mortar. Through the purposeful air entrainment the yield is significantly improved. A very quick wetting ensures less entry of coarse air pores and reduced nodule formation (dry spots/knots).

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