Patent ID: 11920055
Assignee: NATIONAL TAIPEI UNIVERSITY OF TECHNOLOGY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A process for producing a barrier composition, comprising:
subjecting a siloxane compound having 1 to 3 amino groups and an aqueous solution including water and an alcohol to a hydrolysis reaction and a first-stage condensation reaction, so that a first colloidal mixture including first colloidal particles is obtained, a molar ratio of the water in the aqueous solution to the siloxane compound expressed in decimal form being not less than 3 and less than 9, the hydrolysis reaction and the first-stage condensation reaction being conducted at a temperature ranging from 0° C. to 5° C. for at least 3 hours;
subjecting the first colloidal mixture and an additional alcohol to a second-stage condensation reaction, so as to obtain a second colloidal mixture including second colloidal particles and having a solid content that is not less than 20 wt % and less than 35 wt %;
subjecting the second colloidal mixture to a heating treatment at a temperature not lower than 120° C. and lower than 150° C. for 2 hours, so as to obtain a cured product; and
subjecting the cured product to an aging treatment at a temperature not lower than 21.5° C. and lower than 58.5° C. and a relative humidity ranging from 56% to 82%.