Branched polyurethanes, formulations comprising them, and...

Details Branched polyurethanes, formulations comprising them, and... Branched polyurethanes, formulations comprising them, and...

2005-03-01

2005-03-01

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...

C528S076000, C528S028000, C524S588000, C524S591000, C560S026000, C516S906000, C516S916000

Reexamination Certificate

active

06861493

ABSTRACT:
Branched polyurethanes which are preparable by reactingA) one or more aliphatic and/or aromatic isocyanates having a functionality of at least three withB) from 90.0 to 99.8 eq. % of one or more polyethers of the structurein-line-formulae description="In-line Formulae" end="lead"?RO(SO)w(BO)x(PO)y(EO)zHin-line-formulae description="In-line Formulae" end="tail"? andC) from 0.2 to 10.0 eq. % of at least one of the compounds from the following group:a. polyethersb. polyether polydimethylsiloxane diolsc. polyester polydimethylsiloxane diolsd. polydimethylsiloxane diolse. polydimethylsiloxane diaminesf. polyether diamines.

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