Back to results
US 5,395,860 AGranted
Flexible polyurethane foams using chlorinated alkanes
AssigneeArco Chemical Technology, L.P.
InventorsSiusun K. Leung, Frank E. Critchfield, Paul M. Westfall
Life of this patent
Estimating the term…
Abstract
It has been discovered that particular flexible polyurethane foam formulations having a chlorinated alkane incorporated therein have the advantage of improved combustion resistance, but also unexpectedly the additional advantages of improved durability (dynamic fatigue), and better processing in terms of a delayed onset of gel. These results were surprisingly achieved with the use of a chlorinated alkane as the sole component to improve combustion resistance. Incorporation of as much as 34 parts of chlorinated alkane per hundred parts of polyol have been accomplished.
Claims32
A process for the manufacture of a flexible polyurethane foam comprising reacting together:
- (a) a polymer polyol formed by polymerizing more than one ethylenically unsaturated monomer in a polyol, where each monomer is present in an amount of at least 5 wt. % based on total monomers present;
- (b) water;
- (c) an organic polyisocyanate;
- (d) at least one catalyst for the reaction of the polymer polyol and water with the organic polyisocyanate;
- and
- (e) a chlorinated alkane as the sole additive with any combustion resistance capability
- where onset of gel of the resulting flexible polyurethane foam is delayed as compared with an identical flexible polyurethane foam not containing the chlorinated alkane, and where the flexible polyurethane foam has improved durability and improved combustion resistance as compared with an identical polyurethane foam except that such latter foam contains no chlorinated alkane.
4 more elements
A process for the manufacture of a flexible polyurethane foam comprising reacting together:
- (a) a polymer polyol formed by polymerizing more than one ethylenically unsaturated monomer in a polyol, where each monomer is present in an amount of at least 5 wt. % based on total monomers present;
- (b) water in an amount from 1 to 20 pphp of the polymer polyol;
- (c) an organic polyisocyanate;
- (d) at least one catalyst for the reaction of the polymer polyol and water with the organic polyisocyanate;
- and
- (e) 1 to 35 wt. % of a chlorinated alkane as the sole additive with any combustion resistance capability
- in the absence of a polyvinylchloride resin and a transition metal oxide to improve combustion resistance, where onset of gel of the resulting flexible polyurethane foam is delayed as compared with an identical flexible polyurethane foam not containing the chlorinated alkane, and where the flexible polyurethane foam has improved durability and improved combustion resistance as compared with an identical polyurethane foam except that such latter foam contains no chlorinated alkane.
4 more elements
A flexible polyurethane foam made by the process comprising reacting together:
- (a) a polymer polyol formed by polymerizing more than one ethylenically unsaturated monomer in a polyol, where each monomer is present in an amount of at least 5 wt. % based on total monomers present;
- (b) water;
- (c) an organic polyisocyanate;
- (d) at least one catalyst for the reaction of the polymer polyol and water with the organic polyisocyanate;
- and
- (e) a chlorinated alkane as the sole additive with any combustion resistance capability
- where onset of gel of the resulting flexible polyurethane foam is delayed as compared with an identical flexible polyurethane foam not containing the chlorinated alkane, and where the flexible polyurethane foam has improved durability and improved combustion resistance as compared with an identical polyurethane foam except that such latter foam contains no chlorinated alkane.
4 more elements
A flexible polyurethane foam made by the process comprising reacting together:
- (a) a polymer polyol formed by polymerizing more than one ethylenically unsaturated monomer in a polyol, where each monomer is present in an amount of at least 5 wt. % based on total monomers present;
- (b) water in an amount from 1 to 20 pphp of polymer polyol;
- (c) an organic polyisocyanate;
- (d) at least one catalyst for the reaction of the polymer polyol and water with the organic polyisocyanate;
- and
- (e) 1 to 35 wt. % of a chlorinated alkane as the sole additive with any combustion resistance capability
- where onset of gel of the resulting flexible polyurethane foam is delayed as compared with an identical flexible polyurethane foam not containing the chlorinated alkane, and where the flexible polyurethane foam has improved durability and improved combustion resistance as compared with an identical polyurethane foam except that such latter foam contains no chlorinated alkane.
4 more elements
A flexible polyurethane foam made by the process comprising reacting together:
- (a) at least one polymer polyol formed by polymerizing more than one ethylenically unsaturated monomer in a polyol, where each monomer is present in an amount of at least 5 wt. % based on total monomers present, such polymer polyols as the only polyols;
- (b) water in an amount from 1 to 20 pphp of the polymer polyol;
- (c) an organic polyisocyanate;
- (d) at least one catalyst for the reaction of the polymer polyol and
- water with the organic polyisocyanate;
- and
- (e) 1 to 35 wt. % of a chlorinated alkane as the sole additive with any combustion resistance capability,
- where onset of gel of the resulting flexible polyurethane foam is delayed as compared with an identical flexible polyurethane foam not containing the chlorinated alkane, and where the flexible polyurethane foam has improved durability and improved combustion resistance as compared with an identical polyurethane foam except that such latter foam contains no chlorinated alkane.
5 more elements
A process for delaying the onset of gel in the manufacture of a flexible polyurethane foam comprising reacting together:
- (a) at least one polymer polyol formed by polymerizing more than one ethylenically unsaturated monomer in a polyol, where each monomer is present in an amount of at least 5 wt. % based on total monomers present, such polymer polyols as the only polyols;
- (b) water;
- (c) an organic polyisocyanate;
- (d) at least one catalyst for the reaction of the polymer polyol and water with the organic polyisocyanate;
- and
- (e) a chlorinated alkane as the sole additive with any combustion resistance capability,
- where the onset of gel of the resulting flexible polyurethane foam is delayed as compared with an identical flexible polyurethane foam not containing the chlorinated alkane, and where the flexible polyurethane foam has improved durability and improved combustion resistance as compared with an identical polyurethane foam except that such latter foam contains no chlorinated alkane.
4 more elements
Dependencies are inferred from the claim text.