Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for the preparation of substantially closed-cell rigid foams containing urethane, urea, biuret, and isocyanurate groups and a method of use thereof

Process for the preparation of substantially closed-cell rigid foams containing urethane, urea, biuret, and isocyanurate groups and a method of use thereof

US Patent 5350780 · Granted Sep 27, 1994

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Hydroxy-functional polyurethane carbonates, a process for their preparation and 2003
Polymerizing monomers in presence of polyol and castor oil-polyol product1998
Polyisocyanates containing isocyanurate groups and prepared by trimerizing alkyl1998
Mixtures of cycloaliphatic diisocyanates, a process for their preparation and th1998
Process for the production of open-celled rigid polyurethane foams useful as ins1997
Process for the production of open-celled rigid polyurethane foams useful as ins1997
Process for conditioning and stabilizing polyols1995
Process for the production of substantially closed-cell rigid foams containing u1995
Process for the production of substantially closed-cell rigid foams containing u1995
Process for the purification of polyisocyanates, the polyisocyanates thus purifi1995
Process for the purification of polyisocyanates, the polyisocyanates thus purifi1995
Process for the production of organic carbodiimides and their use as stabilizers1994