November 2011 Newsletter
The November meeting was held Tuesday, November 8th at Cortec Corporation and featured Chandra Chinna from Picassian Polymers. Chandra presented on the chemistry of carbodiimide crosslinkers and new developments in this area of functional materials.
The December meeting will be held at 11:30 on Tuesday, December 13th at HB Fuller (Map It). The cost for the meeting is $10 per person which includes lunch. If you are interested in attending the meeting please register and pay via PayPal on the NWSCT website (Monthly Meeting Registration) by Friday, December 9th so that we can get an accurate head count. If you are interested in attending the meeting but will not be paying via PayPal please contact Wally Kesler via email (wkesler@valspar.com) or phone (612-375-7391) by Friday, December 9th.
This month's talk will feature Christine Fortener, Senior Technical Account Coordinator for Arkema Coating Resins. Christine will be presenting "How to build predictive rheological models to improve coating properties of water based formulations."
Christine Fortener is a Senior Technical Account Coordinator for Arkema Coating Resins with 16 years experience in the coatings industry. She started her career with UCAR Emulsion Systems specializing in latex paint chemistry. Chris spent 10 years in research and development for the Ace Paint Division. Prior to joining Arkema, she had a technical position with Dow Coating Solutions where she represented many business units that supply the coatings industry. In her current role, Chris supports the latex emulsion business in addition to the Coatex rheology modifier and dispersant product lines. Chris has a Bachelor's Degree of Science from the University of St. Francis in Joliet, IL.
ABSTRACT
Most paint formulators daily carry out viscosity measurements using Cone and Plate, Stormer or Brookfield viscosimeters. Correlations between cone and plate viscosities and brush drag, film build or spatter resistance, between Stormer viscosities and in can appearance and between Brookfield viscosities and sag or settling resistance are now a shared knowledge.
More sophisticated tools are needed when trying to model the sag/levelling balance of paints to be applied by brush or the spray mist generated using an air-less unit.
R&D rheometers help build a more accurate model. They show extended capability particularly at very low shear stress when operating in rotation and oscillation modes. Building a model requires to find ways to differentiate paints having different levels of compliance with the property aimed by playing on the type of rheological measurement and on the operating conditions.
The examples discussed reveal that rheology measurements carried out using oscillation modes are shown to be particularly of interest. They give access to qualitative insights in addition to giving accurate quantitative data and are a decision support for formulators looking for a more effective development work.
Meeting Agenda
Date: Tuesday, December 13th, 2011
Place: HB Fuller
1200 Willow Lake Blvd
Vadnais Heights, MN
10:30-11:30 am Executive Committee Meeting
11:30-1:00 pm Lunch and talk featuring Christine Fortener
Membership
If you haven't already done so, we'd like to remind you to pay your annual membership dues in order to remain an active member and continue to receive communications from the NWSCT. If membership fees are not received by December 15th you will be removed from the distribution list. Membership dues can be paid via PayPal on our website (Membership Application/Renewal) or by filling out and sending the form from the Membership page along with a check to Sarah Oebser at the address found on the bottom of the form.
2011/2012 Monthly Meeting Schedule
All monthly meetings will be held on the 2nd Tuesday of the month,
unless otherwise noted.
January - Winter Outing, location TBD
February - Poker Tournament, Sundance Golf & Bowl, Dayton, MN
March 8th - Monthly Meeting, 3M, Speaker TBD
April 11th - Educational Symposium, Location TBD
May - Spring Golf Outing