Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Reexamination Certificate
2008-06-24
2008-06-24
Sergent, Rabon (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
C521S122000, C521S128000, C521S129000, C521S137000, C521S170000, C521S172000, C521S173000, C521S174000, C521S176000, C528S076000, C528S080000, C528S085000
Reexamination Certificate
active
07390867
ABSTRACT:
The invention relates to isocyanate adducts which can be prepared by reacting at least one polyisocyanate with compounds having at least two hydrogen atoms which are reactive toward isocyanate groups and have a crystalline content of less than 10 J/g determined by differential scanning calorimetry in accordance with DIN 51 004 at 20 K/min from room temperature to 250° C. using a nitrogen flow of 3 l/h as carrier gas and an aromatics content reported as carbon atoms in aromatic rings of less than 31% by weight, based on the total weight of the isocyanate adducts.
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Sax et al.; Hawley's Condensed Chemical Dictionary, Eleventh Edition; Van Nostrand Reinhold; New York; 1987; pp. 31 and 940.
Heinz Marion
Huntemann Peter
Rotermund Udo
Schilling Udo
BASF SE
Borrego Fernando A.
Sergent Rabon
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