Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Reexamination Certificate
2006-11-28
2006-11-28
Cooney, Jr., John M. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C521S131000, C521S167000, C521S170000, C521S172000, C521S173000, C521S174000, C252S182240, C252S182260
Reexamination Certificate
active
07141613
ABSTRACT:
The invention relates to flame resistant rigid foams and formulations useful for the production thereof. The polyol formulation must include at least one substance which is inert with respect to isocyanates, does not deplete the ozone layer and has a boiling point below 55° C. and a reaction product of at least one compound with an aromatic ring, at least one aldehyde or ketone and at least one primary or secondary amine. This polyol formulation is reacted with an isocyanate, optionally with other commonly used additives, to produce rigid flame resistant foams.
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DIN 22 719, Oct. 1993, Petroleum products and lubricants, See English language translation also enclosed.
Albach Rolf
Brockelt Michael
Cirujeda-Ranzenberger Juan
Bayer Aktiengesellschaft
Cooney Jr. John M.
Gil Joseph C.
Whalen Lyndanne M.
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