Back to results
US 6,319,962 B1Granted
Hydrocarbon blown rigid polyurethane foams having improved flammability performance
AssigneeHuntsman International LLC
InventorsSachchida N. Singh, Joseph S. Costa, Jr., Rachel E. Berrier
Life of this patent
Estimating the term…
Abstract
Rigid polyurethane or urethane modified polyisocyanurate foams having improved flame resistance are disclosed. The foams are prepared from a composition containing (a) an isocyanate, (b) an isocyanate reactive composition, (c) a hydrocarbon/water blowing agent and (d) a phosphorus material.
Claims8
A reaction system for the production of rigid polyurethane or urethane modified polyisocyanurate foams comprising:
- a) an organic polyisocyanate;
- b) an isocyanate reactive composition containing a plurality of isocyanate reactive groups;
- c) a blowing agent comprising a hydrocarbon and water wherein the amount of water is less than or equal to 1.0% by weight based on the total weight of the reaction system;
- and
- d) at least one halogen substituted phosphorus material wherein,
- said halogen is present in the amount of no more than 1.4% by weight relative to the total weight of the reaction system, and
- said phosphorus is present in the amount ranging from about 0.3 to about 2% by weight relative to the total weight of the reaction system;
- and
- said foam meets the Class I rating in accordance with ASTM E-84 testing.
6 more elements
A process for the production of rigid polyurethane or urethane modified polyisocyanurate foams, said process comprising reacting:
- a) an organic polyisocyanate;
- b) an isocyanate reactive composition containing a plurality of isocyanate reactive groups;
- c) a blowing agent comprising a hydrocarbon and water wherein the amount of water is less than or equal to 1.0% by weight based on the total weight of the reaction system;
- and
- d) at least one halogen substituted phosphorus material wherein,
- said halogen is present in the amount of no more than 1.4% by weight relative to the total weight of the reaction system, and
- said phosphorus is present in the amount ranging from about 0.3 to about 2% by weight relative to the total weight of the reaction system;
- and
- said foam meets the Class I rating in accordance with ASTM E-84 testing.
6 more elements
Dependencies are inferred from the claim text.