Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1983-06-17
1985-08-20
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
428260, 428287, 428290, 428408, 428902, 528172, 548451, 548455, 548524, C08G 7310, C08G 7312
Patent
active
045365598
ABSTRACT:
Resins are prepared from polymers that bear difunctional groups derived from compounds that are condensation products of amino-phenols and acid anhydrides. The polymers are prepared by coreacting aromatic compounds holding two hydroxyl groups, aromatic compounds holding two active halogen groups, and the condensation product of amino-phenol and acid anhydride, the condensation product holding one hydroxyl group. The resulting product has a molecular weight between about 1,000 and 40,000, preferably between about 5,000 and 30,000, and can be cross-linked to form a resin that is thermoplastic and solvent resistant.
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Lubowitz Hyman R.
Sheppard Clyde H.
Lee Lester L.
The Boeing Company
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