Patent ID: 11879032
Assignee: BYK-CHEMIE GMBH
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. A process for preparing a reaction product containing urethane and urea groups as claimed in claim 1, wherein
i) b alcohols Y—(OH)q are reacted with at least one polyisocyanate R(NCO)x to form at least one urethane of the general formula (V)

((HO)q-1—Y—O—CO—NH)b—R—(NCO)x-b  (V)

where
the urethane of the general formula (V) contains at least one free isocyanate group,
and
ii) at least one urethane of the general formula (V) is reacted with a species of the general formula (Ha), to give a reaction product containing urethane and urea groups, comprising at least one species of the general formula (I),