23501-81-7 Usage
Description
2,4-dioxo-1,3-diazetidine-1,3-bis(hexamethylene) diisocyanate, also known as hexamethylene diisocyanate uretdione, is a chemical compound that belongs to the class of diisocyanates. It is characterized by the presence of two isocyanate functional groups and a diazetidine ring structure. 2,4-dioxo-1,3-diazetidine-1,3-bis(hexamethylene) diisocyanate is known for its reactivity and ability to form polyurethane materials.
Uses
Used in Polyurethane Industry:
2,4-dioxo-1,3-diazetidine-1,3-bis(hexamethylene) diisocyanate is used as a key ingredient in the industrial processing of polyurethane materials. It serves as a reactive component that reacts with other compounds to form polyurethane polymers, which are known for their versatility, durability, and wide range of applications.
Used in Coating Industry:
In the synthesis of high solid acrylic polyurethane coating materials, 2,4-dioxo-1,3-diazetidine-1,3-bis(hexamethylene) diisocyanate is used as a cross-linking agent. It helps in forming a network structure within the coating material, enhancing its properties such as adhesion, hardness, and chemical resistance. This makes the resulting coatings suitable for various applications, including automotive, industrial, and protective coatings.
Check Digit Verification of cas no
The CAS Registry Mumber 23501-81-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,5,0 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 23501-81:
(7*2)+(6*3)+(5*5)+(4*0)+(3*1)+(2*8)+(1*1)=77
77 % 10 = 7
So 23501-81-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H24N4O4/c21-13-17-9-5-1-3-7-11-19-15(23)20(16(19)24)12-8-4-2-6-10-18-14-22/h1-12H2
23501-81-7Relevant articles and documents
Method for catalytic dimerization of isocyanates
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Page 7-8, (2008/06/13)
The invention concerns a method for preparing polyisocyanates by cyclodimerization of isocyanate functions borne by initial monomer isocyanates. The invention is characterised in that it comprises steps which consist in: a) providing a reaction medium comprising initial monomer isocyanates, optionally in the presence of a solvent; b) adding to said reaction mixture a (cyclo)dimerization catalyst comprising a compound of the family of super acids; c) heating the reaction medium to a temperature ranging between 0° C. and 300° C., advantageously between 20° C. and 200° C. until the desired rate of transformation is obtained; d) optionally inactivating or eliminating the reaction catalyst; and e) optionally eliminating the unreacted monomer.
