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
2011-05-17
2011-05-17
Lipman, Bernard (Department: 1762)
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
active
07943698
ABSTRACT:
An ambient temperature curing coating composition comprising the crosslinked reaction product of:(a) an amino-functional compound, wherein the amino-functional compound is a bis-silylamine of general formula:in-line-formulae description="In-line Formulae" end="lead"?(R2)b(R1Y)aSi-Q1-NH-Q2-(NH-Q3)n-Si(YR1)a(R2)bin-line-formulae description="In-line Formulae" end="tail"?n≧0a=3−bb=0,1,2each Y is independently a heteroatom, selected from O, N; if Y is N, then the valency of Y is 2; if Y is O, then the valency of Y is 1;each R1is independently a monovalent radical (e.g., hydrogen, hydrocarbon including but not limited to alkyl (linear or branched), cycloalkyl, aryl, allyl, or aralkyl. Preferably, R1is an alkyl of 1-10 carbon atoms. Each R1may be the same or different;R2is a monovalent radical, and can include heteroatoms (e.g., oxygen, nitrogen, sulfur) not directly bonded to the silicon atom, including but not limited to, alkyl (linear or branched), cycloalkyl, aryl, allyl, or aralkyl. Each R2may be the same or different.Q1, Q2, Q3is a divalent bridging group, including but not limited to an alkylene, but preferably is a C1-C12alkylene, and can be branched or cyclic; each Q can be the same or different; and(b) an acrylic polymer containing pendant organofunctional α-silane groups.
REFERENCES:
patent: 7074856 (2006-07-01), Ho et al.
patent: 2009/0075096 (2009-03-01), Butikofer et al.
Ho Wai-Kwong
Tomko Richard F.
Cook Deron A.
Lipman Bernard
McDonald Robert E.
The Sherwin-Williams Company
Tsang Vivien Y.
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