Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2005-05-03
2005-05-03
Moore, Margaret G. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S033000, C528S901000
Reexamination Certificate
active
06887964
ABSTRACT:
A moisture-curable, alkoxysilane-functional polyether urethanes containinga) 20 to 90% by weight, based on the weight of a) and b), of a polyether urethane containing two or more reactive silane groups and one or more polyether segments, wherein the polyether segments have a number average molecular weight of at least 3000 and a degree of unsaturation of less than 0.04 milliequivalents/g, provided that the sum of the number average molecular weights of all of the polyether segments per molecule averages 6000 to 20,000, and wherein the reactive silane groups are incorporated as the reaction product of an isocyanate group with a compound corresponding to the formulab) 10 to 80% by weight, based on the weight of a) and b), of a polyether urethane containing one reactive silane group and one or more polyether segments having a number average molecular weight of 1000 to 15,000.
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Crawford Derek L.
Frisch Kurt C.
Henderson Karen M.
Roesler Richard R.
Strohecker Michael D.
Bayer Materialscience LLC
Gil Joseph C.
Matz Gary F.
Moore Margaret G.
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