Arquivamento - Art. 36 §1° da LPI
#11.2
08/28/2001
RPI 1599
Application data
Number
PI9301771Type
Filing
Publication
The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 08/28/2001. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
D. D. (pessoa física)
US
IPC Classification
Priority claims
US
880,280 · 05/08/1992
Abstract
Polímeros contendo monômeros polimerizados anionicamente tais como butadieno ou estireno e unidades adjacentes de ésteres de (1-metil-1-alquil)alquila tais como metacrilato de t-butila assim como derivados hidrogenados seletivamente destes, são aquecidos até pelo menos 180°C para converter unidades adjacentes de éster a anéis de anidrido estáveis.
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