Patent · US Active

Dual cure method using Zerewitinoff-active H tin catalysts

US11555088B2 · kind B2 · utility

0Cited by

3References

15Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Dirk Achten · Leverkusen, DE
Thomas Büsgen · Leverkusen, DE
Christoph Tomczyk · Leverkusen, DE
Jan Weikard · Neunburg vorm Wald, DE
Frank Richter · Frankfurt, DE
Roland Wagner · Feldkirchen-Westerham, DE

Key dates

Filing date	Mar 26, 2018
Grant date	Jan 17, 2023
Priority date	—
Expiry date	Aug 12, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB33Y70/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a method for producing an object from a construction material, the construction material comprising radically crosslinkable groups, NCO groups and groups having Zerewitinoff active H atoms, and the object being a three-dimensional object and/or a layer. During and/or after the production of the object, the construction material is heated to a temperature of >50° C., and the construction material comprises one or more cyclic tin compounds of formula F-I, F-II and/or F-III.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.