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
2006-04-25
2006-04-25
Pezzuto, Helen L. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C554S180000, C554S194000, C554S196000, C554S205000, C525S381000, C525S385000
Reexamination Certificate
active
07034086
ABSTRACT:
This invention relates to a crosslinking composition comprising a compound having the structure of Formula I:where Z is a hydrogen, an alkyl of 1 to about 18 carbon atoms, an aryl of about 6 to about 24 carbon atoms, an aralkyl of about 7 to about 24 carbon atoms, or —NR2R2; each R2is independently hydrogen, an alkyl, aryl or an aralkyl of 1 to about 18 carbon atoms or R3; where R3is —CHROR1orwhere R is alkyl, halogenated alkyl, aryl, aralkyl, halogenated aralkyl, alkoxyalkyl or an alkaryl having from 1 to about 24 carbon atoms; R1is a hydrogen, alkyl, aryl, aralkyl, alkoxyalkyl or an alkaryl having from 1 to about 24 carbon atoms; and where the alkyl or aryl groups in each radical may optionally have heteroatoms in their structure; B is a residue of a poly(alkylaldehyde) with n aldehyde groups; n is an integer of 2 to about 4; and A is an amino moiety derived from the group consisting of guanamine and melamine. The above composition may be prepared by reacting a melamine or guanamine with a mono(alkylaldehyde), a poly(alkylaldehyde) and an alcohol.
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J. G. Frick, Jr., and R. J. Harper,Jr., “Investigations Toward Formaldehyde-Free Finishes,” Feb. 1982, pp 141-148.
Jacobs, III William
Lin Lon-Tang Wilson
Verhage Dimitri
Wu Kuang-Jong
Cytec Technology Corp.
Morgan & Lewis & Bockius, LLP
Pezzuto Helen L.
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