Claims
- 1. A polyurethane foam composition comprising, based on the total weight of ingredients, a foamed mixture containing
- (A) 20 to about 100 parts of an oxyalkylation polyol prepared by
- (1) providing a mixture containing
- (a) a phenol, at least in an amount sufficient to form a complex with an aluminum or iron substance in the mixture;
- (b) a non-phenolic active hydrogen compound having 2 to 8 active hydrogens per molecule and having an average molecular weight below about 10,000;
- (c) a substance containing aluminum or iron which will form a complex with phenol, and
- (d) an organic acid anhydride, at least one of which components (a), (b), and (d) is halogenated.
- (2) heating the mixture to a temperature in the range of from about 80.degree. C. to about 250.degree. C.; and
- (3) oxyalkylating the heated mixture by adding thereto sufficient alkylene oxide having from 2 to 12 carbon atoms to form an oxyalkylated polyol product.
- (B) 40 to about 60 parts of a polyarylpolyalkylene polyisocyanate having a functionality of about 2.2 to 3.3 or of an isocyanate terminated prepolymer derived from the reaction of a stoichiometric excess of said polyarylpolyalkyleneisocyanate with said oxyalkylation polyol; and
- (C) 0.2 to about 2 parts of a wetting agent, and
- (D) 5 to about 30 parts of a blowing agent.
- 2. A polyurethane foam according to claim 1, wherein in the oxyalkylation component, each of the phenol (a), the active hydrogen compound (b), and the organic acid anhydride (d) is halogenated.
- 3. A process for preparing a polyurethane fowm which comprises mixing and reacting
- (A) 20 to about 100 parts of an oxyalkylation polyol prepared by
- (1) providing a mixture containing
- (a) a phenol, at least in an amount sufficient to form a complex with an aluminum or iron substance in the mixture;
- (b) a non-phenolic active hydrogen compound having 2 to 8 active hydrogens per molecule and having an average molecular weight below about 10,000;
- (c) a substance containing aluminum or iron which will form a complex with phenol, and
- (d) an organic acid anhydride, at least one of which components (a), (b), and (d) is halogenated;
- (2) heating the mixture to a temperature in the range of from about 80.degree. C. to about 250.degree. C.; and
- (3) oxyalkylating the heated mixture by adding thereto sufficient alkylene oxide having from 2 to 12 carbon atoms to form an oxyalkylated polyol product;
- (B) 40 to about 60 parts of a polyarylpolyalkylene polyosicyanate having a functionality of about 2.2 to about 3.3 or of an isocyanate terminated prepolymer derived from the reaction of a stoichiometric excess of said polyarylpolyalkylenepolyisocyanate with said oxyalkylation polyol;
- 0.2 to about 2 parts of a wetting agent; and 5 to about 30 parts of a blowing agent.
- 4. A process according to claim 3, wherein in the oxyalkylation polyol component (A), each of the phenol (a), the active hydrogen compound (b), and the organic acid anhydride (d) is halogenated.
- 5. A polyurethane foam composition which comprises, based on the total weight of ingredients, two components, the first component comprising
- (A) 20 to about 100 parts of an oxyalkylation polyol product prepared by the process of
- (1) providing a reaction mixture containing
- (a) a phenol, at least in an amount sufficient to form a complex with aluminum or iron substances in the mixture,
- (b) a non-phenolic active hydrogen compound having from 2 to 8 active hydrogens per molecule and having an average molecular weight below about 10,000, and
- (c) a substance containing aluminum or iron which will form a complex with the phenol (a), in an amount sufficient to form a complex with the phenol (a),
- (2) heating the mixture to a temperature in the range of from about 80.degree. C. to about 250.degree. C., and
- (3) oxyalkylating the heated mixture by adding thereto sufficient alkylene oxide having from 2 to 12 carbon atoms to form an oxyalkylated polyol product,
- (C) 0.2 to about 2 parts of a polymerization catalyst,
- (D) 0.15 to about 3 parts of a wetting agent, and
- (E) 5 to about 30 parts of a blowing agent, the second (B) component comprising 40 to about 60 parts of a polyarylpolyalkylene polyisocyanate having a functionality of about 2.2 to about 3.3 or of an isocyanate-terminated prepolymer derived from the reaction of a stoichiometric excess of said polyarylpolyalkylene polyisocyanate with said oxyalkylation polyol.
- 6. A polyurethane foam according to claim 5, wherein in the oxyalkylation component, each of the phenol (a) and the active hydrogen compound (b) is halogenated.
Parent Case Info
This is a division (II) of application Ser. No. 590,332, filed June 25, 1975, now U.S. Pat. No. 4,097,399, issued June 27, 1978, which is a division of application Ser. No. 425,524, filed Dec. 17, 1978, now U.S. Pat. No. 3,957,922, issued May 18, 1976.
US Referenced Citations (13)
Divisions (2)
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Number |
Date |
Country |
Parent |
590332 |
Jun 1975 |
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Parent |
425524 |
Dec 1978 |
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