Hydrophilically modified polyisocyanurate plastic and process for production thereof

US11286331B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Thomas Klimmasch · Leverkusen, DE
• Jan Weikard · Neunburg vorm Wald, DE
• Mathias Matner · Neuss, DE
• Dirk Achten · Leverkusen, DE
• Hans-Josef Laas · Odenthal, DE
• Heiko Hocke · Shanghai, CN
• Dieter Mager · Leverkusen, DE

Key dates

• Filing date: Oct 25, 2016
• Grant date: Mar 29, 2022
• Expiry date: Oct 25, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to novel modified polyisocyanurate plastics obtainable by catalytic trimerization of a composition A), wherein the composition A) comprises oligomeric modified polyisocyanates B) that are a reaction product of an oligomeric polyisocyanate B1) and at least one functionalizing reagent B2) reactive toward isocyanate groups, where the composition A) has a content of monomeric diisocyanates of not more than 20% by weight and where the at least one functionalizing reagent B2) reactive toward isocyanate groups has at least one functional group reactive toward isocyanate groups which is not an isocyanate group. The invention further relates to the process from which the polyisocyanurate plastics of the invention are obtainable, to the use of the polyisocyanurate plastics of the invention for production of coatings, films, semifinished products, composites and moldings, and to substrates coated with such a coating.