Production of polyurethane foam
First Claim
1. A process for producing a flexible polyurethane foam which comprises reacting a polyhydroxy compound, organic polyisocyanate compound, blowing agent, catalyst, foam stabilizer, and flame retardant, wherein the flame retardant contains a triaryl phosphate ester presented by the following formula:
- ##STR6## wherein R1 to R6 are substituent groups independently selected from the group consisting of H and Cn H2n+1 and n is an integer of 1 to 9, with the exception of the instances wherein R1 =R3 =R5 =H and R2 =R4 =R6 =CH3,and wherein said polyhydroxy compound is a mixture composed of (1) 100 parts by weight of a high-molecular-weight polyhydroxy compound having a hydroxyl number lower than 100 and (2) 0.5 to 10 parts by weight of a low-molecular-weight polyhydroxy compound having a hydroxyl number higher than 560 and having 2 to 4 hydroxyl groups in each molecule.
2 Assignments
0 Petitions
Accused Products
Abstract
Flame-retardant polyurethane foam having a very good skin weldability and a very low level of skin staining is produced from a polyhydroxy compound, organic polyisocyanate, blowing agent, catalyst, foam stabilizer, and flame retardant, and other additives, wherein the flame retardant contains a triaryl phosphate ester and the polyhydroxy compound is a mixture composed of 100 parts by weight of high-molecular-weight polyhydroxy compound having a hydroxyl number lower than 100 and 0.5 to 10 parts by weight of low-molecular-weight polyhydroxy compound having a hydroxyl number higher than 560 and having 2 to 4 hydroxyl groups in one molecule.
15 Citations
15 Claims
-
1. A process for producing a flexible polyurethane foam which comprises reacting a polyhydroxy compound, organic polyisocyanate compound, blowing agent, catalyst, foam stabilizer, and flame retardant, wherein the flame retardant contains a triaryl phosphate ester presented by the following formula:
- ##STR6## wherein R1 to R6 are substituent groups independently selected from the group consisting of H and Cn H2n+1 and n is an integer of 1 to 9, with the exception of the instances wherein R1 =R3 =R5 =H and R2 =R4 =R6 =CH3,
and wherein said polyhydroxy compound is a mixture composed of (1) 100 parts by weight of a high-molecular-weight polyhydroxy compound having a hydroxyl number lower than 100 and (2) 0.5 to 10 parts by weight of a low-molecular-weight polyhydroxy compound having a hydroxyl number higher than 560 and having 2 to 4 hydroxyl groups in each molecule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- ##STR6## wherein R1 to R6 are substituent groups independently selected from the group consisting of H and Cn H2n+1 and n is an integer of 1 to 9, with the exception of the instances wherein R1 =R3 =R5 =H and R2 =R4 =R6 =CH3,
Specification