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1. (WO2018045442) MULTIFUNCTIONAL BLACK PIGMENT PRODUCED BY RICE HUSK PYROLYSIS

Pub. No.:    WO/2018/045442    International Application No.:    PCT/BR2017/050264
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Sat Sep 09 01:59:59 CEST 2017
IPC: C09C 1/28
C09C 1/40
C09B 61/00
C09D 7/12
Applicants: UNIVERSIDADE FEDERAL DE PELOTAS
Inventors: DA SILVA CAVA, Sergio
RODRIGUES ALMEIDA, Suelem
HERPET CABRAL, Thayssa
WIENKE RAUBACH RATMANN, Cristiane
LUCIO MOREIRA, Mario
SANCHES FILHO, Pedro José
Title: MULTIFUNCTIONAL BLACK PIGMENT PRODUCED BY RICE HUSK PYROLYSIS
Abstract:
The present invention is the production of a multifunctional nanoparticulate black pigment created from the raw material rice husk. The method includes two procedures for producing said pigment using two ovens, the first being a pyrolysis oven created by the author of the present patent and the second oven being a tubular model with closed sides. Said pigment is characterized by being formed predominantly of silica, and is produced by a process of pyrolysis. The invention therefore makes it possible to produce a novel inorganic pigment from rice husk ashes of organic origin, thereby benefiting the industrial sector, which is in need of techniques that contribute towards compliance with socio-environmental demands.