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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C08J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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2361/00
Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
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C08J2361/20
Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
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C08J2361/22
of aldehydes with acyclic or carbocyclic compounds
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C08J2361/24
with urea or thiourea
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