Siwell·Rebon®SR-238, ultra high molecular weight polydimethylsiloxane dispersion, has special dry and smooth feeling. It provides products advanced anti-scratch, and abrasion resistant properties while substantiallydecrease the friction factor on surface to resist adhesion. SR-238 effects under low dosage while do not occur bubbles, soluble in alcohol and DMF. It is applied to water based leather coatings, water based varnish, and water based ink systems.