February Technical Dinner Meeting
Monday, February 10, 2020
Registration at 5:30
Presentation at 6:00
Dinner to follow
Next Generation Latex for Plasticizer Free Sealant Applications
By Christine Fortener of Arkema Coating Resins
Caulks and sealants are called upon to perform under extreme environmental conditions and are expected to maintain flexibility even at extremely low temperatures. To achieve this most pigmented acrylic latex sealants on the market today are formulated with a supplementary external plasticizer. It is not uncommon for acrylic based sealant formulations to contain as much as 40 weight % plasticizer. The reliance on high levels of external plasticizer to achieve acceptable low temperature flexibility may however create a host of problems. These include dirt pickup and mildew growth, hardening on aging, paint discoloration, and glossing. Due to the possible detrimental effects experienced through the use of external plasticizers, its elimination would be expected to improve the performance characteristics of a sealant provided the polymer is sufficiently soft to ensure adequate flexibility. New latex technology has been developed for high performance caulks and sealants. It’s excellent exterior durability and adhesion enables the formulator to prepare a broad range of ASTM C834 and C920 compliant sealants. Its low glass transition temperature allows for the formulation sealants with outstanding low temperature flexibility without the need for external plasticizers. The elimination of external plasticizer has the added benefit of improved dirt pick-up and mildew resistance.
Christine Fortener is a Senior Technical Account Coordinator for Arkema Coating Resins with 25 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. In her current role, Chris provides technical support for solventborne acrylics, latex emulsions, alkyds, polyesters and additives.
March Technical Dinner Meeting
Monday, March 9, 2020
Mouhcine Kanouni - Clariant Additives
Western Springs, IL