Composition for polyurethane foam, preparation for polyurethane foam, polymer polyol preparation for polyurethane foam, production processes therefor, and polyurethane foam

A preparation for a polyurethane foam, which is a preparation (c) for a polyurethane foam comprising a polyol (i), a compound (ii) having a P═N bond, an antioxidant (iii) having a hydroxyphenyl group and an acid or its salt (iv), wherein:

• the polyol (i) contains a polyoxyalkylene polyol (p) obtained by addition polymerization of an alkylene oxide compound onto an active hydrogen compound using the compound (ii) as a catalyst, and the compound (ii) having been used for the production of the polyol (p),
• the acid or its salt (iv) is at least one acid selected from the group consisting of an acyclic aliphatic monocarboxylic acid of 2 to 25 carbon atoms, a hydroxycarboxylic acid of 2 to 25 carbon atoms, a polycarboxylic acid of 20 to 60 carbon atoms, an aromatic monocarboxylic acid represented by the following formula (1), a sulfonic acid and an acid having a sulfuric acid ester group, or its salt,
• the preparation (c) is obtained by adding the acid or its salt (iv) in such an amount that the molar ratio (a/b) of the acid or its salt (iv) (a) to the compound (ii) (b) having been used for the production of the polyol (p) becomes not less than 0.3 but not more than 25, and the antioxidant (ii) to the polyol (i), and
• the content ratio of the compound (ii) having been used for the production of the polyol (p), to the polyol (p) is 150 to 5000 ppm,
• wherein R1 is a hydrocarbon group, and m represents a number of hydrogen atoms of a benzene ring having been replaced with R1 and is any one of 0 to 5.

A production process for a preparation for a polyurethane foam, comprising a step of adding, to a polyol (i) containing a polyoxyalkylene polyol (p) obtained by addition polymerization of an alkylene oxide compound onto an active hydrogen compound using a compound (ii) having a P═N bond as a catalyst, and the compound (ii) having been used for the preparation of the polyol (p),

• an antioxidant (iii) having a hydroxyphenyl group and an acid or its salt (iv) in such an amount that the molar ratio (a/b) of the acid or its salt (iv) (a) to the compound (ii) (b) having a P═N bond and having been used for the production of the polyol (p) becomes not less than 0.3 but not more than 25,
• the content ratio of said compound (ii) having been used for the production of the polyol (p), to the polyol (p) being 150 to 5000 ppm,
• wherein:
• the acid or its salt (iv) is at least one acid selected from the group consisting of an acyclic aliphatic monocarboxylic acid of 2 to 25 carbon atoms, a hydroxycarboxylic acid of 2 to 25 carbon atoms, a polycarboxylic acid of 20 to 60 carbon atoms, an aromatic monocarboxylic acid represented by the following formula (1), a sulfonic acid and an acid having a sulfuric acid ester group, or its salt,
• wherein R1 is a hydrocarbon group, and m represents a number of hydrogen atoms of a benzene ring having been replaced with R1 and is any one of 0 to 5.