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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12/00
Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
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C08G12/263
with at least two compounds covered by more than one of the groups C08G12/28 - C08G12/32
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