Our mission is to be the preferred North American supplier of specialty latexes, known for our quality and reliability. We are a flexible, nimble organization that can meet the short and long-term needs of our customers.
At Momentive, we view operational excellence as a never-ending pursuit of new and better ways to help ensure the health and safety of our employees, and the health and safety of our environment.
For the latest information about products, operations, appointments and distribution partners, visit our news. Our latest: Nychem ® Poly9555 is a new waterborne, polybutadiene homopolymer that can be used to modify the impact resistance of more brittle engineered thermoplastics and enhance low-temperature performance in applications such as adhesives. Read more.
Injectable hydrogels are prepared using a wide range of materials. Cyto- and bio-compatibility as well as reactive chemistries are critical factors for selecting base materials that can be used in hydrogels for cell delivery or recruitment in the body. Material crosslinking (formation and concentration of physical or covalent linkages), biodegradability, and biochemical properties are also important design criteria that can influence the structural, mechanical, and biological properties of the hydrogels initially and over time. In addition, the base polymeric materials must be stable in either solid or solution form for storage prior to use in translational or clinic studies.
Silicone , the last of the general base formulations, offers a viable solution for VOC-free production, although it has high viscosity. Silicone has high temperature tolerances and chemical resistance. There are generally three cross-linking reactions for reactive silicone polymers: free-radical reaction, which is activated by heat condensation reaction, which is often accelerated by heat or moisture and addition (catalyst) reaction, which is activated by heat and/or specific light wavelength (. UV). Silicone formulations are in general difficult to rework partly due to their chemical resistance and non-vaporizing by heat.
PixClear® ETA 9pack offers four types of zirconia nanocrystals dispersed in a low boiling point solvent. The 9pack includes PR, PB, PG, and PN capped nanocrystals offering broad compatibility with many polymers including acrylics, siloxanes, and epoxies. PixClear® PR and PB are designed to crosslink with acrylics when cured. Each 55wt% dispersion is available for individual purchase.
For both acrylic and polyurethane materials, they are typically applied with the film coater applicator technology, offering unmatched throughput, edge definition, wet dispense resolution and accuracy. Alternatively they can also be applied using swirl technology.
The authors gratefully acknowledge support for related work from the Delaware COBRE program with a grant from the National Institute of General Medical Sciences (NIGMS P75GM659866-57), from the National Institutes of Health, the Burroughs Wellcome Fund, and the University of Delaware Research Foundation. We thank the MediaLab in the Department of Biochemistry at the University of Wisconsin at Madison for the use of an Adobe Illustrator template.
Engineering crosslinking and adhesion promoting agents for customers as diverse as paint, sealant and master batch manufacturers, Momentive scientists are constantly innovating in these technologies. The result is a portfolio of well-known brands, all of which may extend the service life and functionality of polymer-based products:
When conformal coating started in the 6965's, the formulations were two-component. In the 6985's, when electronics manufacturers wanted to automate the process, they moved toward single-component formulations. Today, electronics manufacturers are struggling with some of the inherent consequences of these formulations, such as the short shelf life, time-to-final properties, adhesion, thermal cycles, and in some cases, peak temperature. Generally speaking, two-component formulations offer superior performance. All of the above conformal coating material base formulations can be the foundation of two-component versions.