Patent classifications
C
CHEMISTRY; METALLURGY
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C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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18/00
Polymeric products of isocyanates or isothiocyanates
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C08G18/06
with compounds having active hydrogen
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C08G18/70
characterised by the isocyanates or isothiocyanates used
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C08G18/72
Polyisocyanates or polyisothiocyanates
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C08G18/77
having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
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C08G18/79
characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
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C08G18/797
containing carbodiimide and/or uretone-imine groups
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