Flame resistant polyurethane materials containing melamine-derived additives
OwnerPhilip Radford, Jusong Xiainventors
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Abstract
Polyurethane foam is disclosed having improved flame retardancy, charring, and intumescent properties. The foam is prepared from a reaction mixture comprising at least one isocyanate or diisocyanate, one blowing agent, one surfactant, one catalyst, and one reactive hydroxyl-terminated oligomeric liquid melamine derivative. The resulting foam provides substantial resistance to burning. A melamine-derived compound having at least alkyl or alkoxy groups, with hydroxy (—OH) termination(s) have proved to be particularly useful in connection with polyurethane foam.
Claims21
A flame retarding polyurethane foam made by combining at least the following, in the presence of a catalyst:
- (a) at least one isocyanate or diisocyanate,
- (b) a polyol, and
- (c) a liquid melamine-derived component, said melamine-derived component having the structure:
- wherein X1-X6 each are independently selected from the group consisting of:
- H and oligomeric oxyalkylene chain represented below
- wherein
- Y is selected from the group consisting of H and CH3;
- and
- z is comprised positive integers or fractional numbers between 1 and 20;
- and
- G comprises:
- H or an oligomeric ester radical;
- and
- wherein at least one of said X1-X6 groups is —OH terminated.
A flame retarding polyurethane foam made by combining, in the presence of a catalyst, at least the following:
- (a) at least one isocyanate or diisocyanate,
- (b) a polyol, and
- (c) a liquid melamine-derived component, said melamine-derived component having the structure:
- wherein X1-X6 each are independently selected from the group consisting of:
- H, EO groups, and PO groups;
- and
- wherein at least one of said X1-X6 groups is —OH terminated.
A liquid melamine-derived compound that is capable bonding covalently in a foam and imparting substantial flame retarding properties to said foam, said melamine-derived compound having the structure:
- wherein X1-X6 each are independently selected from the group consisting of:
- H, and
- wherein Y is selected from the group consisting of:
- hydrogen and CH3;
- and
- wherein z is between 1 and 10;
- and
- wherein G comprises hydrogen;
- and
- wherein at least one of said X1-X6 groups is —OH terminated.
A liquid melamine-derived component capable of covalently bonding to an isocyanate or diisocyanate in the formation of polyurethane foam, said liquid melamine-derived composition comprising at least one reactive hydroxyl terminal group.
An OH-terminated, liquid, reactive, melamine-derived additive composition that is capable of substantially reducing the burn propensity of polyurethane foam when polymerized with said foam.
Dependencies are inferred from the claim text.