High impact, fire retardant, rigid polyurethane foam compositions having high resistance to boiling water and products therefrom

Claim 2

AN IMPACT RESISTANT, BOILING WATER RESISTANT, CURED RIGID POLUURETHANE FOAM MOLDING WHICH IS FIRE RETARDANT, RESULTING FORM THE REACTION OF (1) AN ISOCYANATE TERMINATED PRODUCT OBTAINED BY THE REAFTION OF A STOICHIOMETRIC EXCESS OF AN AROMATIC POLYISOCYANATE WITH A POLY (OXYALLKYLENE) DIOL, COPOLY (OXALKYLENE) DIOL, OR MIXTURE OF POLY (OXYALKYLENE) DIOLS WITH (2) A POLYETHER POLYOL HAVING AT LEAST 4 HYDROXYL GROUPS PER MOLECULE WHICH IS THE PRODUCT OF THE REATION OF ONE OR MORE ALKYLENE OXIDES WITH AN AROMATIC, ARALIPHATIC CYCLOALKYL OR HETEROCYCLIC POLYHYDROXY COMPOUND OR A MIXTURE OF POLYETHER POLYOLS CONTAINING AT LEAST ONE POLYETHER POLYOL WHICH IS THE REACTION PRODUCT OBTAINED BY REACTING ONE OR MORE ALKYLENE OXIDES WITH AN AROMATIC, ARALIPHAIC, CYCLOALKYL OR HETEROCYCLIC POLYHYDROXY COMPOUND CONTAINING AT LEAST 4 HYDROXYL GROUPS PER MOLECULE, IN THE PRESENCE OF (3) TRIS (1-BROMO-3-CHLOROISOPROPYL) PHOSPHATE; (4) ONE OR MORE BLOWING AGENTS; AND OPTIONALY (5) ONE OR MORE CATALYSTS; AND (6) ONE OR MORE SURFACTANTS.

Claim 3

The molding of claim 1 wherein said poly (oxyalkylene) diol is a poly (oxypropylene) diol.

Claim 4

An impact resistant, boiling water resistant, cured rigid polyurethane foam molding which is fire retardant, resulting from the reaction of (1) an isocyanate terminated product obtained by the reaction of a stoichiometric excess of an aromatic polyisocyanate with a poly (oxyalkylene) diol, copoly (oxyalkylene) diol, or mixture of poly (oxyalkylene) diols with (2) a polyether polyol having at least 4 hydroxyl groups per molecule which is the product of the reaction of one or more alkylene oxides with an aromatic, araliphatic, cycloalkyl or heterocyclic polyhydroxy compound or a mixture of polyether polyols containing at least one polyether polyol which is the reaction product obtained by reacting one or more alkylene oxides with an aromatic, araliphatic, cycloalkyl or heterocyclic polyhydroxy compound containing at least 4 hydroxyl groups per molecule, in the presence of (3) a mixture of organic compounds which do not contain Zerewitinoff active hydrogen atoms, said mixture of organic compounds characterized by an average molecular weight of at least 500 and containing chlorine, bromine and phosphorus atoms such that the chlorine and bromine atoms are attached directly to carbon atoms and such that the weight ratio of chlorine plus bromine to phosphorus shall be at least 2:1 but not more than 14:1 and such that the weight ratio of bromine to chlorine shall be at least 1:1 but not more than 4:1 said mixture of organic compounds consisting of at least two organic compounds selected from the group consisting of a chloro brominated ester of phosphoric acid, a brominated ester of phosphoric acid or phosphorous acid, a chlorinated ester of phosphoric acid or phosphorous acid, a non-halogen containing organic ester of phosphorous acid, or phosphoric acid, a brominated or chlorinated or chlorobrominated non-phosphorus containing organic compound, (4) one or more blowing agents; and optionally (5) one or more catalysts; and (6) one or more surfactants; each of said compounds of said mixture (3) having a boiling point of at least 75*C.

Claim 5

An impact resistant, boiling water resistant, cured rigid polyurethane foam molding which is fire retardant, resulting from the reaction of (1) an isocyanate terminated product obtained by the reaction of a stoichiometric excess of an aromatic polyisocyanate with a poly (oxyalkylene) diol, copoly (oxyalkylene) diol, or mixture of poly (oxyalkylene) diols with (2) a polyether polyol having at least 4 hydroxyl groups per molecule which is the product of the reaction of one or more alkylene oxides with an aromatic, araliphatic, cycloalkyl or heterocyclic polyhydroxy compound or a mixture of polyether polyols containing at least one polyether polyol which is the reaction product obtained by reacting one or more alkylene oxides with an aromatic, araliphatic, cycloalkyl or heterocyclic polyhydroxy compound containing at least 4 hydroxyl groups per molecule, in the presence of (3) a mixture of organic compounds which do not contain Zerewitinoff active hydrogen atoms, said mixture of organic compounds characterized by an average molecular weight of at least 500 and containing chlorine, bromine and phosphorus atoms such that the chlorine and bromine atoms are attached directly to carbon atoms and such that the weight ratio of chlorine plus bromine to phosphorus shall be at least 2:1 but not more than 14:1 and such that the weight ratio of bromine to chlorine shall be at least 1:1 but not more than 4:1 said mixture of organic compounds consisting of at least two organic compounds selected from the group consisting of a chloro brominated ester of phosphoric acid, a brominated ester of phosphoric acid or phosphorous acid, a chlorinated ester of phosphoric acid or phosphorous acid, a non-halogen containing organic ester of phosphorous acid, or phosphoric acid, a brominated or chlorinated or chlorobrominated non-phosphorus containing organic compound, (4) one or more blowing agents; and optionally (5) one or more catalysts; and (6) one or more surfactants; each of said compounds of said mixture (3) having a boiling point of at least 75*C.

Claim 6

The molding of claim 3 wherein said poly (oxyalkylene) diol is a poly (oxypropylene) diol.

Claim 7

The foam molding of claim 3 wherein (3) is a mixture which comprises a brominated ester of phosphoric acid and a chlorinated ester of phosphoric acid.

Claim 8

The foam molding of claim 3 wherein (3) is a mixture which comprises a brominated ester of phosphoric acid and a chlorinated ester of phosphorus acid.

Claim 9

The foam molding of claim 3 wherein (3) is a mixture which comprises a brominated ester of phosphoric acid and a non-phosphorus containing chlorinated organic compound.

Claim 10

The foam molding of claim 3 wherein (3) is a mixture which comprises a chlorinated ester of phosphoric acid and a non-phosphorus containing brominated organic compound.

Claim 11

The foam molding of claim 3 wherein (3) is a mixture which comprises a non-phosphorus containing chlorinated organic compound, a non-phosphorus containing brominated organic compound and a non-halogen containing organic ester of phosphoric acid.

Claim 12

The foam molding of claim 3 wherein (3) is a mixture which comprises a non-phosphorus containing chlorinated organic compound, a non-phosphorus containing brominated organic compound and a non-halogen containing organic ester of phosphorous acid.

Claim 13

The foam molding of claim 3 wherein the mixture (3) consists essentially of a chloroethylester of phosphorous acid having the formula

Claim 14

The foam molding of claim 3 wherein the mixture (3) consists essentially of a chloroethyl ester of phosphorous acid having the formula

Claim 15

The foam molding of claim 3 wherein the mixture (3) consists essentially of tris (2,3-dibromopropyl) phosphate, a chlorinated paraffin of molecular weight about 487 and chlorine content of about 72 percent and bis neopentyl glycol triethylene glycol diphosphite.

Claim 16

The foam molding of claim 10 wherein the mixture (3) consists essentially of a chlorinated paraffin of molecular weight about 487 and chlorine content of about 72 percent; bis neopentyl glycol tri ethylene glycol di phosphite and tri bromoneopentyl azelate.

Claim 17

The foam molding of claim 8 wherein the mixture (3) consists essentially of tris (2,3 dichloropropyl) phosphate and tribromoneopentyl azelate.