156849-43-3 Usage
General Description
Silquest A 2639 is a chemical compound mainly used as a silane adhesion promoter and surface modifier. It is derived from aminosilane and commonly employed in the production of glass fibers, reinforced plastics, and coated metals. This chemical acts as a coupling agent, enhancing the adhesion of organic polymers to inorganic materials, thereby improving the overall performance and durability of composite materials. Silquest A 2639 is also used to modify the surface properties of fillers and pigments, leading to improved dispersion and compatibility in various formulations. Its multifunctional nature and ability to enhance bonding make it a valuable additive in the manufacturing of adhesives, coatings, and sealants.
Check Digit Verification of cas no
The CAS Registry Mumber 156849-43-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,8,4 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 156849-43:
(8*1)+(7*5)+(6*6)+(5*8)+(4*4)+(3*9)+(2*4)+(1*3)=173
173 % 10 = 3
So 156849-43-3 is a valid CAS Registry Number.
156849-43-3Relevant articles and documents
Cyclic silylureas and process of preparation
-
, (2008/06/13)
This invention provides a class of cyclic silylureas and a process of preparing them, which process comprises reacting a cyclosilazane with an isocyanate containing moiety; a class of cyclosilazanes and process for making them, which process comprises heating an aminoalkylalkoxysilane in the presence of a basic catalyst at a temperature less than 100° C. at subatmospheric pressure; and aminoalkylalkoxysilanes and a process for making them, which process comprises reacting a nitrile and a vinylsilane while heating in the presence of a base selected from the group consisting (a) an alkali metal, (b) alkali metal alkoxide, (c) an alkali metal amide, (d) an alkali metal hydride and (e) mixtures thereof to form a reaction product which is subsequently hydrogenated.
