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
2007-05-29
2007-05-29
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...
C525S418000, C525S504000, C525S524000
Reexamination Certificate
active
10815532
ABSTRACT:
Compounds of formula Ia or Ibwherein A is an (n+1)-valent aliphatic, cycloaliphatic, araliphatic or aromatic radical and n is an integer from 0 to 5,E is an (m+1)-valent aliphatic, cycloaliphatic, araliphatic or aromatic radical and m is an integer from 0 to 3,X is —O—, —C(═O)O or —CHR4—, with R4and R3together forming an ethylene group,R1and R2are, each independently of the other, hydrogen or methyl,R3is hydrogen, or R3and R4together form an ethylene group,and R5is a monovalent aliphatic, cycloaliphatic, araliphatic or aromatic radical,are highly reactive curing agents for epoxy resins and yield cured products having improved resistance to chemicals.
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Fischer Walter
Frischinger Isabelle
Gabutti Claudio A
Wiesendanger Rolf
Huntsman Advanced Materials Americas Inc.
Sellers Robert
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