摘要:
A process for producing a flexible polyurethane foam includes reacting a polyol mixture (X) with a polyisocyanate compound. The polyol mixture (X) includes a polyol (A), a polyol (B), and a monool (D). The reaction is in the presence of a dioctyltin dilaurate as a urethane-forming catalyst, a blowing agent, and the like. The polyol (A) is a polyoxyalkylene polyol with a hydroxy value of from 10 to 60 mgKOH/g. The polyol (B) is a polyoxyalkylene polyol with a hydroxy value of from 100 to 250 mgKOH/g. The monool (D) is a polyoxyalkylene monool with a hydroxy value of from 10 to 200 mgKOH/g.
摘要:
To provide a flexible polyurethane foam which is excellent in low resiliency and durability without using a plasticizer and which shows little change in hardness against a change in temperature and at the same time, has high air flow.A process for producing a flexible polyurethane foam, which comprises reacting a polyol mixture comprising the following polyol (A), the following polyol (B) and the following monool (D) with a polyisocyanate compound in the presence of a blowing agent and a foam stabilizer, at an isocyanate index of at least 90, wherein: Polyol (A) is a polyether polyol having an average of from 2 to 3 hydroxyl groups, a hydroxyl value of from 10 to 60 mgKOH/g and an oxyethylene group content of from 0 to 30 mass %, obtained by ring-opening polymerization of an alkylene oxide to an initiator using a phosphazene compound, a Lewis acid compound or an alkali metal compound catalyst; Polyol (B) is a polyether polyol having an average of from 2 to 3 hydroxyl groups and a hydroxyl value of from 70 to 250 mgKOH/g; and Monool (D) is a polyether monool having a hydroxyl value of from 10 to 200 mgKOH/g.
摘要:
To provide a flexible polyurethane foam which is excellent in low resiliency and durability without using a plasticizer and which shows little change in hardness against a change in temperature and at the same time, has high air flow.A process for producing a flexible polyurethane foam, which comprises reacting a polyol mixture comprising the following polyol (A), the following polyol (B) and the following monool (D) with a polyisocyanate compound in the presence of a blowing agent and a foam stabilizer, at an isocyanate index of at least 90, wherein: Polyol (A) is a polyether polyol having an average of from 2 to 3 hydroxyl groups, a hydroxyl value of from 10 to 60 mgKOH/g and an oxyethylene group content of from 0 to 30 mass %, obtained by ring-opening polymerization of an alkylene oxide to an initiator using a phosphazene compound, a Lewis acid compound or an alkali metal compound catalyst; Polyol (B) is a polyether polyol having an average of from 2 to 3 hydroxyl groups and a hydroxyl value of from 70 to 250 mgKOH/g; and Monool (D) is a polyether monool having a hydroxyl value of from 10 to 200 mgKOH/g.
摘要:
A process for producing a flexible polyurethane foam, which comprises reacting a polyol mixture with a polyisocyanate compound in the presence of a urethane-forming catalyst and a blowing agent, characterized in that the polyol mixture comprises the following polyol (A) and the polyol (B), and the proportion of the polyisocyanate compound to the polyol mixture is at least 90 by isocyanate index, and the total amount of Zn and Co contained in the polyol mixture is from 0.1 to 200 ppm.
摘要:
To provide a process for producing a flexible polyurethane foam, which comprises reacting a polyol compound and a polyisocyanate compound in an open system substantially without using a silicone foam stabilizer.A process for producing a flexible polyurethane foam, which comprises reacting a polyol composition (I) containing at least a polyol compound and containing at least one of a polyol compound (A) and a monool compound (X) obtained by ring-opening polymerization of an alkylene oxide with an initiator by using a double metal cyanide complex catalyst, and a polyisocyanate composition (II) in the presence of a urethane-forming catalyst made of a metal catalyst and an amine catalyst, and a blowing agent, in an open system substantially without using a silicone foam stabilizer.
摘要:
To provide a process for producing a flexible polyurethane foam which is excellent in low resiliency, air flow and hot moldability, and a process for producing a hot press molded product by using such a flexible polyurethane foam. Further, the present invention provides a hot press molded product which has a low resiliency and air flow.A process for producing a flexible polyurethane foam, which comprises reacting a specific polyol with a specific polyisocyanate in the presence of a urethane-forming catalyst, a blowing agent and a foam stabilizer, at an isocyanate index of less than 90. Further, a process for hot press molding the flexible polyurethane foam obtained by such a process, and such a hot press molded product.
摘要:
To provide a process for producing a flexible polyurethane foam which is excellent in low resiliency, air flow and hot moldability, and a process for producing a hot press molded product by using such a flexible polyurethane foam. Further, the present invention provides a hot press molded product which has a low resiliency and air flow.
摘要:
A process for producing a flexible polyurethane foam, which comprises reacting a polyol mixture with a polyisocyanate compound in the presence of a urethane-forming catalyst and a blowing agent, characterized in that the polyol mixture comprises the following polyol (A) and the polyol (B), and the proportion of the polyisocyanate compound to the polyol mixture is at least 90 by isocyanate index, and the total amount of Zn and Co contained in the polyol mixture is from 0.1 to 200 ppm.