Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-07-31
1988-11-15
Bowers, Jr., Charles L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
522101, 522181, 525524, 525534, 528 87, 528 89, 528104, 568640, C08G 5918, C08G 5920, C08G 5962
Patent
active
047850620
ABSTRACT:
This invention is directed to the reaction product of an O-epoxyalkylated tetrakis (hydroxyphenyl) alkane resin with a phenol, which is used either as an upper layer over a lower layer of a diazo resin in a bi-layer system or as a homogeneous mixture with a diazo resin in a mono-layer system to provide a water-developable, negative-working, lithographic printing plate.
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Bowers Jr. Charles L.
Cross Charles A.
Plunkett Richard P.
W. R. Grace & Co.,-Conn.
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