Photosensitive compositions and applications thereof

A photosensitive composition comprising:

• a) a polymer having a first type of repeating unit of formula (IA) derived from a monomer of formula (I):
• a second type of repeating unit of formula (IIA) derived from a monomer of formula (II):
• and
• a third type of repeating unit of formula (IIIA) derived from a monomer of formula (III):
• wherein:
• represents a position at which the bonding takes place with another repeat unit;
• a is an integer from 0 to 3;
• b is an integer from 1 to 4;
• c is an integer from 1 to 4;
• R1 is selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, i-propyl and n-butyl;
• R18 is selected from —(CH2)s—, —(CH2)t—OCH2— or —(CH2)t—(OCH2CH2)u—OCH2—, where
• s is an integer from 0 to 6,
• t is an integer from 0 to 4;
• u is an integer from 0 to 3;
• R19 is —(CH2)v—CO2R20 where v is an integer from 0 to 4, and
• R20 is hydrogen or C1-C4alkyl;
• b) a photo active compound containing a diazo-quinone moiety of formula (A):
• c) a multifunctional crosslinking agent selected from the group consisting of:
• d) a phenolic compound selected from the group consisting of:
• e) a compound of formula (VI):
• wherein d and e are integers from 1 to 4;
• f and g are integers from 0 to 4;
• R2 and R3 are the same or different and independently of each other selected from hydrogen, methyl, ethyl, linear or branched C3-C6alkyl, C3-C8cycloalkyl, C6-C10aryl and C7-C12aralkyl;
• or
• R2 and R3 taken together with the carbon atom to which they are attached form a 5 to 8 membered substituted or unsubstituted carbocyclic ring where said substituents are selected from C1-C8alkyl;
• and
• R4 and R5 are the same or different and independently of each other selected from hydrogen, methyl, ethyl, linear or branched (C3-C6)alkyl, (C3-C5)cycloalkyl, (C6-C10)aryl and (C7-C12)aralkyl.