Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1977-10-20
1978-07-25
Phynes, Lucille M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528362, C08G 7300
Patent
active
041028732
ABSTRACT:
Compounds of the general formula: ##STR1## wherein R.sub.1 is an isomer of phthalaldehyde; R.sub.2 is an isomer of an romatic dialdehyde selected from the class consisting of phthalaldehyde, naphthalene dialdehyde, phenanthrene dialdehyde, anthracene dialdehyde, biphenyl dialdehyde, terphenyl dialdehyde; and mixtures thereof and R.sub.3 is an isomer of an aromatic diamine selected from the class consisting of benzene diamine, naphthalene diamine, phenanthrene diamine, biphenyl diamine, and terphenyl diamine, and the cyano-condensation resins thereof which are useful in preparing semiconductors.
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patent: 3993631 (1976-11-01), Griffith et al.
Griffith James R.
O'Rear Jacques G.
McDonnell Thomas
Phynes Lucille M.
Schneider Philip
Sciascia R. S.
The United States of America as represented by the Secretary of
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