Patent ID: 6541181
Filing Date: 2003-04-01
Classification: B41C,C08F,H05K,Y10S

Abstract:
A positive-acting resist element comprising a substrate having at least one metal surface having adhered to at least one surface of the substrate a positive-acting resist layer comprising an acetal polymer comprising the general formula: whereinR1 is â€”CnH2n+1 where n=1-12; R2 is whereinR4=â€”OH; R5=â€”OH or â€”OCH3 or â€”Br or â€”Oâ€”CH2â€”Câ‰¡CH; and R6=â€”Br or â€”NO2; R3=â€”(CH2)aâ€”COOH or â€”Câ‰¡CH or whereR7=COOH, â€”(CH2)aCOOH or â€”Oâ€”(CH2)aCOOH, and a=0 or 1; andm=5-40 mole %, g=10-60 mole %, o=0-20 mole %, p=1-10mole %, and q=5-50 mole %,; and an infrared absorbing material in an amount of from 0.01 to 20% by weight of said positive-acting thermal resist layer.