Patent · US Expired

Photoinitiator, novel compound, and photocurable composition

US7166648B2 · kind B2 · utility

3Cited by

11References

14Claims

0Family size

Assignee

Dainippon Ink and Chemicals, Inc. · JP

Inventors

Artur Lachowicz · Berlin, DE
Kai-Uwe Gaudl · Wantage, US
Jens FERBITZ · Osnabrück, DE
Gerwald Grahe · Berlin, DE
Yu Jing · Suzhou, CN
Wu Guanghui · Qingdao, CN

Key dates

Filing date	Apr 3, 2003
Grant date	Jan 23, 2007
Priority date	—
Expiry date	Apr 3, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2/50
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A photoinitiator is provided which exhibits excellent photosensitivity, yields colorless products, and is usable in thick layer UV curable coating. A novel chemical compound is also provided which is usable for the photoinitator. Photocurable composition is also provided which has these properties. The photoinitiator consists essentially of a compound having a molecular weight of 1000 or less, and having a chemical structure represented by the following formula (1),wherein R3 and R4 independently denote a specific alkyl group, and R1 and R2 independently denote an electron attracting group or a specific alkyl group, and weight percentage of a chemical structure element represented by the following formula (2),which is expressed in formula (1) based on the total molecular weight of the compound, is 17% to 54% by mass.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.