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
2005-09-20
2005-09-20
Gorr, Rachel (Department: 1711)
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...
C528S061000, C528S062000, C528S063000, C528S064000, C528S065000, C521S174000
Reexamination Certificate
active
06946539
ABSTRACT:
Polyurethane or polyurethane-urea is comprised of poly(trimethylene-ethylene ether) glycol as a soft segment. The polyurethane or polyurethane-urea preferably comprises about 10 to about 90% soft segment and is prepared from:(a) poly(trimethylene-ethylene ether) glycol(b) diisocyanate; and(c) diol or diamine chain extender.The composition is particularly useful for making shaped articles.
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International Search Report, date of mailing: Dec. 29, 2003.
Gorr Rachel
Kuller Mark D.
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