Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-11-08
2005-11-08
Sellers, Robert (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S131000, C525S157000, C525S162000, C525S405000, C525S440030, C525S441000, C525S456000, C528S044000, C528S059000
Reexamination Certificate
active
06962958
ABSTRACT:
A reaction product is useful as a crosslinking agent for polymers having functional groups reactive with the reaction product such as hydroxyl, carboxylic acid, amide, thiol, urea, carbamate and/or thiocarbamate groups, wherein the polymer includes an acrylic, polyester, polyether and/or polyurethane. The reaction product is derived from a) a polyisocyanate or polyisocyanurate, b) a hydroxyalkyl carbamate, c) an aldehyde and d) at least one monohydric alcohol.
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Barancyk Steven V.
Gaggini Sherry M.
Humphrey William A.
Mayo Michael A.
Valenta Jane N.
Altman Deborah M.
PPG Industries Ohio Inc.
Sellers Robert
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