Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2008-01-29
2008-01-29
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C528S164000, C528S254000, C525S484000, C525S489000, C525S495000, C525S497000, C525S498000, C524S541000
Reexamination Certificate
active
07323534
ABSTRACT:
A composition is disclosed, which comprises a hydroxyaromatic-aldehyde resole resin comprising an aldehyde and a hydroxyaromatic compound, modified with a urea-aldehyde condensate. The composition has improved premix stability, improved cure efficiency, comparable tensile strength, and lower volatiles than the hydroxyaromatic-aldehyde resole resin unmodified with a urea-aldehyde condensate. Also disclosed are articles prepared therefrom.
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Tomita, Bunichior et al., Synthesis of Phenol-Urea-Formaldehyde Cocondensed Resins from UF-Concentrate and Phenol, Holzforschung, 522-526, vol. 48 (1994) No. 6.
Hexion Specialty Chemicals, Inc.
Truong Duc
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