MS resin 920R

MS resin 920R

INTRODUCTION 920R is a silane modified polyurethane resin based on high molecular weight polyether, end-capped with siloxane and containing carbamate groups, has the characteristics of high activity, no dissociative isocyanate, no solvent, excellent adhesion and so on. 920R curing mechanism is moisture curing. Catalysts are needed in sealant formulation. Ordinary organotin catalysts (such as dibutyltin dilaurate) or chelated tin (such as diacetylacetone dibutyltin) can achieve good mechanical properties. The recommended amount of tin catalysts is 0.2-0.6%. 920R resin combinated with plasticizer, nano calcium carbonate, silane coupling agent and other fillers and additives can prepare sealant products which has tensile strength of 2.0-4.0 MPa, 100% modulus between 1.0-3.0 MPa . 920R can also be used to prepare transparent sealants which are widely used in building exterior wall, home decoration, industrial elastic sealant, elastic adhesive and so on. TECHNICAL INDEX

Item	Specification	Test method
Appearrance	Colorless to pale yellow transparent viscous liquid	visual
Colour value	50 Max	APHA
Viscosity (mPa·s)	50 000-60 000	Brookfield viscometer under 25 ℃
pH	6.0-8.0	Isopropanol/aqueous solution
Moisture content(wt%)	0.1 Max	Karl Fischer
Density	0.96-1.04	25 ℃ water density is 1

PACKAGE INFORMATION

Small package	20 kg iron drum
Medium package	200 kg iron drum
Large package	1000kg PVC ton drum

STORAGE Place in a cool and ventilated place.Unopened preservation at room temperature.The product storage time is for 12 months.Non-flammable goods, according to conventional chemical transport.