The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2025
Filed:
Oct. 17, 2019
Jiangnan University, Jiangsu, CN;
Ren Liu, Jiangsu, CN;
Xiucheng Zou, Jiangsu, CN;
JIANGNAN UNIVERSITY, Jiangsu, CN;
Abstract
A dark-colored system photopolymerization composition, comprising: 20-80 phr of photopolymerizable prepolymer, 5-60 phr of photopolymerizable monomer, 0.2-8 phr of photoinitiator, and 0.1-5 phr of melanin, 0.05-5 phr of upconversion materials. The composition can construct photopolymerization under near-infrared irradiation. The dark pigment can avoid the strong absorption of near-infrared light, and the upconversion material can absorb near-infrared light with good penetrating ability and emit ultraviolet or visible light to induce the decomposition of free radicals or ionic photoinitiators in the composition. Then produced active species realize the photopolymerization of dark-colored compositions. The invention increases the depth of photopolymerization of dark-colored compositions and improves the mechanical properties of the polymer, that will broaden application fields of photopolymerization materials.