C CHEMISTRY; METALLURGY
C08 ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18/00 Polymeric products of isocyanates or isothiocyanates
C08G18/06 with compounds having active hydrogen
C08G18/70 characterised by the isocyanates or isothiocyanates used
C08G18/72 Polyisocyanates or polyisothiocyanates
C08G18/751 containing only one cycloaliphatic ring
C08G18/752 containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
C08G18/753 containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
C08G18/755 and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate