Abstract: The present invention relates to a flexographic water based ink in which a biodegradable polymer, such a polyhy-droxyalkanoate (PHA), replaces conventional poorly or non-biodegradable organic polymeric resins for example. PHAs are used as a latex suspension in water, thus the present invention relates to a novel pigment/latex mixture. PHA in a latex form is a fluid vehicle in which all the other components necessary to provide a flexographic ink are added, i.e., pigments, wax and/or binder, as well as a solvent, if necessary. The PHAs are mainly responsible for the biodegradability of the flexographic water based ink. The present invention relates also a method to produce a flexographic water based composition with enhanced biodegradability properties.
Type:
Grant
Filed:
January 23, 2003
Date of Patent:
September 15, 2009
Assignee:
BioMatera inc.
Inventors:
Laurent Masaro, Patrick Lapointe, Jean-Charles Jacques Gayet
Abstract: The present invention relates to a process for reducing the solvent content from a biodegradable polymer in a composition or a preparation. The process comprises drying the biopolymer composition by submitting it to microwaves for a time to achieve removal of the solvent at desired levels.
Type:
Application
Filed:
January 22, 2003
Publication date:
October 13, 2005
Applicant:
BIOMATERA INC.
Inventors:
Sabin Boily, Julie Gaudet, Marco Blouin, Laurent Masaro, Patrick Lapointe
Abstract: The present invention relates to a flexographic water based ink in which a biodegradable polymer, such a polyhy-droxyalkanoate (PHA), replaces conventional poorly or non-biodegradable organic polymeric resins for example. PHAs are used as a latex suspension in water, thus the present invention relates to a novel pigment/latex mixture. PHA in a latex form is a fluid vehicle in which all the other components necessary to provide a flexographic ink are added, i.e., pigments, wax and/or binder, as well as a solvent, if necessary. The PHAs are mainly responsible for the biodegradability of the flexographic water based ink. The present invention relates also a method to produce a flexographic water based composition with enhanced biodegradability properties.
Type:
Application
Filed:
January 23, 2003
Publication date:
September 29, 2005
Applicant:
BIOMATERA INC.
Inventors:
Laurent Masaro, Patrick Lapointe, Jean-Charles Gayet
Abstract: The formation of a cream and gel is described using a biopolymer, such as a polyhydroxyalkanoate (PHA), a polylactide (PLA), a polylactideglycolide (PLGA) and a polyglycoside (PGA), or a derivative thereof, in a latex form with the addition of a binder, which is generally an amphiphilic chemical entity. An hydrophobic domain of the amphiphilic chemical entity interacts with at least one biopolymer forming a water soluble complex, while the hydrophilic domain of the amphiphilic chemical entity maintains the soluble complex in suspension in an aqueous solution, which after proper heating becomes a gel or a cream. As a result, a versatile gel or cream is created with different compositions and textures that are obtained based on the nature of the binder used and the ratio of biopolymers and binder(s).
Type:
Application
Filed:
November 14, 2002
Publication date:
May 19, 2005
Applicant:
BIOMATERA INC.
Inventors:
Laurent Masaro, Patrick Lapointe, Jean-Charles Gayet