Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1991-03-22
1995-04-18
Chapman, Mark A.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430270, 430288, 522121, 522179, 525193, 525285, 526271, 526272, G03C 1725
Patent
active
054077842
ABSTRACT:
An aqueous-developable article is made from a photoprepolymer made by reacting a maleated polyalkadienyl homo- or copolymer (e.g., polybutadiene) with an olefinically unsaturated compound capable of opening anhydride rings (e.g., hydroxyethyl methacrylate) with simultaneous chain extension using a polyalkadienyl polyol, followed by hydrolysis and neutralization with Li--, Na--, or K-containing base. When formulated with unsaturated monomers and photoinitiators, the photoprepolymer is particularly useful in making photopolymer-based flexographic printing plates.
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Translation of Takiyama, Kokai #52-81396 Dated 7 Jul. 1977.
Berrier Arthur L.
Kumpfmiller Ronald J.
Chapman Mark A.
Gandhi Bharat C.
W. R. Grace & Co.,-Conn.
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