Glascol LS24

Carboxylated acrylic copolymer

Ciba Specialty Chemicals

丙烯酸树脂 >> 丙烯酸乳剂 Acrylic Resins >> Acrylic Emulsions 油墨 >> 水型 Inks >> Water-based INKS >> 清漆/印刷体表面修饰 INKS >> Varnishes / Over print varnish Water GLASCOL LS24 are resins developed for water-borne inks. The key benefits are: very good clarity excellent blocking resistance very good resistance to organic and water-based materials good pigment wetting properties hydrophilic nature of polymer excellent viscosity/pH stability near linear viscosity/dilution curve GLASCOL LS24 are aqueous microemulsions based on similar carboxylated acrylic copolymers. GLASCOL LS24 are specialty resins designed for use in water-based inks. The main recommended applications are inks for paper/corrugated paper and plastic substrates such as polyolefines (polyethylene, polypropylene) and PVC. Further uses of GLASCOL LS24 include over print varnishes on paper and plastic substrates. Both products can be used as sole binders. GLASCOL LS24 requires addition of coalescing solvent to film form. Alternatively, replacing a third of GLASCOL LS24 with GLASCOL LS20 also promotes film- forming. Blending both products also allows to adjust the coating hardness from hard (mainly GLASCOL LS24) to soft (mainly GLASCOL LS20) and consequently to improve adhesion properties. In inks it is recommended that GLASCOL LS24 is used as the let-down vegicle. Optimum colour development can be achieved when using a highly hydrophilic resins as the pigment grinding vehicle. A very suitable grinding resin for this purpose is GLASCOL LS16, also offered by Ciba Specialty Chemicals. In some cases, however, the above recommendation cannot be followed. If water resistance is to be maintained at maximum then it is possible to grind the pigment directly into GLASCOL LS24. This must be done on highly efficient dispersing equipment otherwise some loss in gloss and/or flow can occur. The slip and abrasion resistance of formulations based on GLASCOL LS24 may significantly be improved by addition of a wax emulsion such as GLASWAX E1. Since GLASCOL LS24 are microemulsions, the liquid products exhibit some resilient properties which can be of importance for practical use: e.g., improved stability against high shear stress The products demonstrate excellent viscosity/pH stability in the pH range 7.8-9.0 but become insoluble when the pH drops below 7.0. Aqueous microemulsion based on carboxylated acrylic copolymers. Used in water-based inks for paper/corrugated paper and plastic substrates such as polyolefines (polyethylene, polypropylene) and PVC, and in overprint varnishes on paper and plastic substrates. Can be used as a sole binder and as a let-down vegicle in combination with highly hydrophilic resins as pigment grinding vehicle to offer optimum colour development. Requires addition of coalescing solvent to form film. Provides very good clarity, blocking resistance and resistance to organic and water-based materials, good pigment wetting properties, hydrophilic nature of polymer, very good viscosity/pH stability and near linear viscosity/dilution curve. Offers some resilient properties such as improved stability against high shear stress.