a Raw Materials Silane Modified Polyurethane Resin Used for Ms Sealant

• Customization: Available
• CAS No.: 9003-11-6
• Molecular Principal Chain: Carbon Chain Polymer
• Model NO.: STP9350
• Color: Light Transparent
• Application: Sealant
• pH: 6-8
• Density g/cm3: 1.0
• Viscosity MPa.S: 60000-85000
• Shelf Life: 6-9 Month
• Transport Package: 200kg/Drum 1000kg/IBC
• Specification: drum / IBC
• Trademark: SUOYI
• Origin: China
• HS Code: 3907290000

Product Description

Description:
It 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. It is 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%. this resin combined with plasticizer, 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.It also can be used to produce transparent sealants which are  widely used for building exterior wall, home decoration, industrial elastic sealant, elastic adhesive and so on.

Technical parameters:(T=23±2ºC,humidity=50±5%)

Item	Specification	Test method
Appearance	Colorless to pale yellow  transparent viscous liquid	visual
Color value	50 Max	APHA
Viscosity (mPa·s)	60000-85000	Brookfield viscometer under 25 ºC
pH	6.0-8.0	Isopropanol/aqueous solution
Moisture content(wt%)	0.1 Max	Karl Fischer
Density	1.0-1.04	25 ºC water density is 1

 Shelf life & package:
Storage temperature:5-40ºC
Store in a dry, cool room, pay attention to fire prevention,
Under the original packaging sealed conditions shelf life of 12 months.
200kg\drum; 1000kg/drum

Application

It can be used in construction and architecture industry. Sealants and coatings based on Co-Formula silane terminated polymers are suitable for various types of seals such as building roof, air-conditioning system, cracks repairing, doors and windows, kitchen, toilet and other facilities;
It can be used in transport vehicles. Silane-terminated polymer sealants can be directly sprayed and sealed without primer, heating or other curing treatment. Their performance and superiority make them widely used in automobile, high-speed rail and shipbuilding industries.
It can be used in assembling. Silane-terminated polymer adhesives and sealants are also used for assembling various products because of their non-bubble formation during curing process, which does not affect the mechanical properties of materials.
Company and factory introduction
1-A professional polyurethane technology-based company
2-More than 15 years experience
3-Service more than 200 customers and more than 15 countries

R&D Centre

Quality control and foam performance test