Printing plates imageable by ablative discharge and silicone for

Details Printing plates imageable by ablative discharge and silicone for Printing plates imageable by ablative discharge and silicone for

1993-02-25

1994-05-10

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430275, G03C 1492

Patent

active

053108698

ABSTRACT:
Planographic printing plates coated with a two-component silicone formulations that consist of a high-molecular-weight silicone component and a low-molecular-weight silicone polymer. The components are combined in varying proportions with a cross-linking agent to produce compositions of varying viscosities and dispersibilities. The high-molecular-weight component is linear polysiloxane compound with a molecular weight of at least 300,000, and preferably 500,000 or higher. The low-molecular-weight component has a similar structure, with a molecular weight no greater than 70,000. Various substitutions are made to facilitate cross-linking among components. The coatings can contain pigments or other materials to enhance imaging performance.

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