Hydrophobically modified polyisocyanurate plastic and method for production thereof

US11286332B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Dirk Achten · Leverkusen, DE
• Mathias Matner · Neuss, DE
• Hans-Josef Laas · Odenthal, DE
• Jan Weikard · Neunburg vorm Wald, DE
• Dieter Mager · Leverkusen, DE
• Florian Golling · Düsseldorf, 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 invention relates to novel modified polyisocyanurate plastics, obtainable by means of catalytic trimerization of a composition (A), wherein the composition (A) contains oligomeric, modified polyisocyanates (B), which represent a reaction product from an oligomeric polyisocyanate (B1) and at least one functionalization reagent (B2) which is reactive to isocyanate groups, wherein the composition (A) comprises a content of monomeric diisocyanates of 20 wt % at maximum and wherein the at least one functionalization reagent (B2) which is reactive to isocyanate groups has at least one relative functional group which is reactive to isocyanate groups and which is not an isocyanate group. The invention further relates to the method by which the polyisocyanurate plastics according to the invention are obtainable, to the use of the polyisocyanurate plastics according to the invention for producing coatings, films, semi-finished products, composite materials and molded parts, and substrates coated by such a coating.