Vyacheslav Grinshpun

58177060, Oct 6, 1998

Mar 31, 1998

/052515

Jennifer M. Willson - Westerville OH
Vyacheslav S. Grinshpun - Granville OH
Ruben Santos - Ontario, CA

Owens Corning Fiberglas Technology, Inc. - Summit IL

C08J 914

521181

The invention relates to a process for producing non-CFC resol foams of low density using perfluorinated ethers along with a HCFC or CFC blowing agent, and to foams produced by such a process. The process generally comprises: (a) forming a mixture by combining a resol resin with a blowing-agent blend comprising (i) at least one blowing agent selected from the group consisting of hydrogenated chlorofluorocarbons and hydrogenated fluorocarbons and (ii) at least one perfluoroether additive selected from the group consisting of peiurinated ethers; (b) adding an acid catalyst to the mixture to initiate foaming and form a foam; and (c) curing the foam to form a cured foam that is essentially free of CFCs.

57894566, Aug 4, 1998

Aug 27, 1997

8/920616

Jennifer M. Willson - Westerville OH
Vyacheslav S. Grinshpun - Granville OH
Ruben Santos - Mississauga, CA

Owens Corning Fiberglas Technology, Inc. - Summit IL

C08J 914

521114

The invention relates to a process for producing non-CFC resol foams of low density using perfluorinated ethers along with a HCFC or CFC blowing agent, and to foams produced by such a process. The process generally comprises: (a) forming a mixture by combining a resol resin with a blowing-agent blend comprising (i) at least one blowing agent selected from the group consisting of hydrogenated chlorofluorocarbons and hydrogenated fluorocarbons and (ii) at least one perfluoroether additive selected from the group consisting of perfluorinated ethers; (b) adding an acid catalyst to the mixture to initiate foaming and form a foam; and (c) curing the foam to form a cured foam that is essentially free of CFCs.