Patent ID: 11860537
Assignee: MERCK PATENT GMBH
Field: Optics (Instruments)
Classification: CPC G  C | IPC C  G

Claim 8:
9. A positive type photosensitive siloxane composition comprising:
(I) a polysiloxane is produced by hydrolyzing and condensing a silane compound represented by the following formula (ia),

R1[Si(OR2)3]p  (ia)

wherein
p is 1 to 3; and
R1 is hydrogen, a mono- to trivalent saturated or unsaturated straight, branched or cyclic aliphatic hydrocarbon group of Ci to 30, or a mono- to trivalent aromatic hydrocarbon group of C6 to 30;
R2 is an alkyl group of C1 to 10,
provided that,
in said aliphatic or aromatic hydrocarbon group,
one or more methylene is substituted with oxy, imido or carbonyl, or unsubstituted,
one or more hydrogen is substituted with fluorine, hydroxy or alkoxy, or unsubstituted, and
one or more carbon is substituted with a silicon, or unsubstituted; and further provided that, if R1 is a di- or trivalent group, R1 links Si atoms contained in the plural repeating units;

(II) a diazonaphthoquinone derivative;
(III) an additive selected from the group consisting of compounds having >N—C(═O)— or >N—C(═S)— structures and not having any other binding sites for said polysiloxane, with the proviso that the additive is not a thiourea and the additive contains two substitutents Ra, wherein each Ra is independently silyl, alkylsilyl, alkylsilylalkyl or silylalkyl group, and the additive does not contain an alkoxysilyl group or hydroxysilyl group; and
(IV) a solvent and
(V) a photoacid generator.