Jack A. Berdasco - Midland MI Stephen R. Betso - Midland MI Kun S. Hyun - Midland MI Bobby A. Howell - Mount Pleasant MI
Assignee:
The Dow Chemical Company - Midland MI
International Classification:
B29C 4778
US Classification:
264 85
Abstract:
The present invention is a process for forming an extruded article containing a copolymer of vinylidene chloride and at least one other ethylenically-unsaturated comonomer, said process comprising the step of extruding the copolymer in the presence of (1) at least one gas which is inert with respect to the copolymer and does not plasticize the copolymer; and (2) essentially no gases which are not inert with respect to the copolymer. Vinylidene chloride copolymers extruded according to the process of the present invention have lower metal adhesion and less tendency to contain specks of carbon than do vinylidene chloride copolymer copolymers extruded under an air atmosphere.
Sustained Release Composition Using Biobased Biodegradable Hyperbranched Polyesters
The present invention provides a sustained release composition having hyperbranched polymers that are polyesters that are biobased and biodegradable, and that have at least one active ingredient, which composition delivers the active ingredient over time. These active ingredients can be a wide variety of compounds so long as they can covalently bind to the polymer or be encapsulated in the polymer in a manner that is released at the point of delivery, usually by acid hydrolysis or enzymatic bond scission.
Abilene Christian High School Abilene TX 1996-2000
Community:
Kristyn Harper, Sean Martin, Kristen Hall, Jennifer Gerdes, Shauna Patten, Matt Fahrlender, Charis Dillman, As Asas, Theresa Loftin, Sarah Thomas, Adam Hong