| 摘要 |
1507842 Photopolymerizable screen-printing inks DYNACHEM CORP 14 May 1975 [24 May 1974] 20460/75 Heading C3P [Also in Division G2] Photopolymerizable screen-printing inks comprise (a) a reaction product of (i) an epoxy compound or an omega-hydroxy ether containing at least one aromatic ring with (ii) an ethylenically unsaturated carboxylic acid hav- 3 to 18 C atoms; (b) a liquid copolymerizable compound; and (c) a photoinitiator. Examples of components (a) are the di-(meth)acrylates of 2,2 - [4 - (beta - hydroxyethoxy)phenyl] propane and the reaction product of (meth) acrylic acid with the diglycidyl ether of 2,2-(4- hydroxyphenyl)propane. The inks are useful in the production of printed circuits. |
