Crayvallac LA-100 Urea based Cray Valley Rheology Modifier/ Thickener >> Post-add thickener Inks >> Solvent-based Coatings >> Solventborne General Industrial /Maintenance INKS N-methylpyrrolidone Crayvallac LA-100 Crayvallac LA-100 is a modified urea dissolved in N-methylpyrrolidone. This new pourable liquid rheology modifier is suitable for post-addition to solvent-based coatings. Crayvallac LA-100 should be added after the pigment dispersion and grind stage when the coating has been thinned to its approximate final high-shear viscosity. Addition during the pigment grind stage, or under other conditions of high shear, will result in a coating with significantly reduced sedimentation and sag characteristics. The performance of Crayvallac LA-100 is very dependent on the solvent-balance of the coating system. Modified urea dissolved in N-methylpyrrolidone. Used solvent-based industrial coatings and solvent-based ink applications. Provides very good control of sedimentation and sag. Easy to incorporate. Imparts shear-thinning rheology with thixotropic viscosity recovery.