Open cell rigid polyurethane foam and method for producing the s

Details Open cell rigid polyurethane foam and method for producing the s Open cell rigid polyurethane foam and method for producing the s

1998-04-24

1999-03-30

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 521129, 521131, 521174, C08G 1830, C08G 1832

Patent

active

058890670

ABSTRACT:
Disclosed is a method for producing an open cell rigid polyurethane foam which comprises reacting the mixture of a polyol for producing rigid polyurethane foam, a volatile blowing agent which is free from environmental pollution and selected from the group consisting of hydrocarbons, hydrofluoroalkanes and perfluoroalkanes or a mixture of the volatile blowing agent with water, a monohydric fatty alcohol having a good solubility to hydrocarbon as a cell opening agent, a foam stabilizer forming a very small cell in the presence of a isocyanate trimer catalyst and an organic isocyanate. The resultant open cell rigid polyurethane foam has a cell size of about less than 95 um, and is suitable for use, for example, as a core material in a vacuum heat insulating material. The foam may be enclosed in a container under a vacuum of 0.1.about.0.01 torr and has a thermal conductivity of 0.0045.about.0.0050 kcal/mhr.degree.C.

REFERENCES:
patent: 4797430 (1989-01-01), Haas et al.
patent: 4950694 (1990-08-01), Hager
patent: 5350777 (1994-09-01), Yuge et al.
patent: 5457138 (1995-10-01), Yug et al.
patent: 5575871 (1996-11-01), Ryoshi
patent: 5690855 (1997-11-01), Nichols et al.

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