Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having a halogen atom or oxygen single bonded...
Patent
1985-06-12
1987-01-13
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having a halogen atom or oxygen single bonded...
528196, 528371, C08G 6362
Patent
active
046365591
ABSTRACT:
Novel bis(cyclic carbonates) are useful as cross-linking agents for polycarbonate compositions (including cyclic polycarbonate oligomers), and, in combination with flame retardant agents, as anti-drip agents for polycarbonate resins. This bis(cyclic carbonates) may be prepared by the reaction of phosgene with novel tetraphenols, which in turn may be prepared by the condensation of aliphatic dialdehydes with phenols.
REFERENCES:
patent: 4440937 (1984-04-01), Krimm et al.
patent: 4579896 (1986-04-01), Rosenquist
Evans Thomas L.
Rosenquist Niles R.
Anderson Harold D.
Davis Jr. James C.
General Electric Company
Magee Jr. James
Pittman William H.
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