7517-76-2 Usage
Description
TRANS-1,4-CYCLOHEXANE DIISOCYANATE, also known as CHDI, is an organic compound that serves as an essential chemical intermediate in the production of various materials. It is characterized by its isocyanate functional groups, which enable it to react with other compounds to form polymers and other useful materials.
Uses
Used in the Polymer Industry:
TRANS-1,4-CYCLOHEXANE DIISOCYANATE is used as a monomer for the synthesis of mixed aromatic/alicyclic polyimides. Its intermediate reactivity allows for the preparation of these polyimides through polycondensation reactions with other monomers such as PMDA, BTDA, and 6FDA. These polyimides are known for their high thermal stability and excellent mechanical properties, making them suitable for various applications in the polymer industry.
Used in the Production of Polyurethanes:
TRANS-1,4-CYCLOHEXANE DIISOCYANATE is also used as a key component in the production of polyurethanes. Its isocyanate functional groups react with other compounds, such as polyols, to form polyurethane polymers. These polymers are versatile and can be used in a wide range of applications, including foams, elastomers, coatings, and adhesives, due to their unique properties like flexibility, durability, and resistance to various environmental factors.
Check Digit Verification of cas no
The CAS Registry Mumber 7517-76-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,1 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 7517-76:
(6*7)+(5*5)+(4*1)+(3*7)+(2*7)+(1*6)=112
112 % 10 = 2
So 7517-76-2 is a valid CAS Registry Number.
InChI:InChI=1/C8H10N2O2/c11-5-9-7-1-2-8(4-3-7)10-6-12/h7-8H,1-4H2/t7-,8-
7517-76-2Relevant articles and documents
Isocyanates From Primary Amines and Carbon Dioxide: 'Dehydration' of Carbamate Anions
Waldman, Thomas E.,McGhee, William D.
, p. 957 - 958 (2007/10/02)
Carbamate anions, derived from primary amines CO2 and an added base (e.g.NEt3), undergo rapid reaction with electrophilic 'dehydrating agents' (e.g.POCl3, P4O10) to give the corresponding isocyanates in excellent yields.
Process for the preparation of organic mono- and polyisocyanates
-
, (2008/06/13)
A process for the preparation of organic mono- and polyisocyanates is described, in which a hydrogen chloride adduct of a trisubstituted urea is thermally decomposed to form the isocyanate. The hydrogen chloride adduct at minimum contains the stoichiometric amount of HCl, and at maximum a 10 mole-% excess. The process is carried out in a closed system at a temperature between about 80° and 180° C.; the reaction is effected either in a melt or in the presence of an inert organic solvent.