公开(公告)号：US06566483B2

公开(公告)日：2003-05-20

申请号：US09963420

申请日：2001-09-27

Applicant: Ching-Sheng Cho ,  Shinn-Jen Chang ,  Wan-Jung Teng ,  Jiun-Ji Chen

Inventor： Ching-Sheng Cho ,  Shinn-Jen Chang ,  Wan-Jung Teng ,  Jiun-Ji Chen

IPC: C08G1404

CPC classification number: C08G8/28 ,  C08L61/14 ,  C08L63/00

Abstract: This invention discloses a photosensitive phosphorylated phenol-formaldehyde resin, characterized by containing in its molecule at least two phosphate groups, each phosphate group coupled with at least one photo-sensitive group. The photosensitive resin of the present invention is prepared by reacting a phenol-formaldehyde resin with phosphorus oxychloride to form a phosphorylated phenol-formaldehyde resin; then reacting the resin with a compound having one hydroxyl group and at least one ethylenically unsaturated bond, thereby esterifying some of the phosphorochloridate groups to produce a resin having ethylenically unsaturated bonds and unreacted phosphorochloridate groups; and hydrolyzing the unreacted phosphorochloridate groups into phosphoric groups. The photosensitive resin according to the invention is UV-curable and alkaline-soluble as traditional photosensitive resins are; moreover, it exhibits good flame retardant and adhesive properties.