April 2019 Meeting

Apr 15, 2019 - 05:00 PM

April 2019 Meeting


***Please Pay Online or RSVP HERE by Thursday, April 11th***

Monday, April 15th, 2019


Roland’s Seafood Grill
1904 Penn Avenue
Pittsburgh, PA 15222



Board Meeting: 4:00 pm
Social Hour: 5:00 pm
Presentation / Speaker: 6:00 pm
Dinner / Meeting: 7:00 pm


Thomas Sames

Thomas Sames is Head of Technical Marketing BL BIO NAFTA at Lanxess Corp.
Before he worked for BASF and DuPont Performance Coatings in different positions before he joined Lanxess in 2006 as Technical Manager for Antifouling Paints and later as Technical Manager for Wood and Paints in Germany. He was relocated in August 2018 from the R&D headquarters in Leverkusen, Germany to Pittsburgh. Thomas brings more than 20 years of experience in the chemical industry, primarily focusing on wood protection, paints and coatings dry-film and in-can preservation. He is graduated in Chemical Engineering.


Rethinking In-Can and Dry-Film Preservation of Paints and Coatings

Growing regulatory and supply issues along with a new focus on environmentally friendly, renewable raw materials have challenged paint formulators to look for new biocide strategies. Depending on a single active, may not be the right move. Historically, isothiazolines, bronopol, and formaldehyde releasers have been the biocides of choice for preventing microbial growth in the container. Blending of these traditional actives and/or non-traditional preservative actives have shown increased efficacy against microorganisms. Advantages of the blend systems included better toxicity profile, lower dosage, longer shelf life of the finished product, as well as overcoming weakness or gaps with a single active. Also, formulators should have a second or third formulation with alternative preservatives to be better prepared if there is a shortage of raw material. This paper will address the advantages for a formulator when they using a blended product as well as having multiple preservative packages.

This is also very challenging for dry film preservatives as they need to have the following characteristics for microbiological protection: broad spectrum fungicidal efficacy, good initial and long-term protection, and chemical stability in the dry film stages. In addition, the dry film fungicide must not adversely affect the finished paint film.

To extend efficacy and lifetime of a dried paint film it is a common approach to increase the amount of biocide in the paint. But due to responsible care reasons and a more and more strict regulatory environment  it is from an economical and technical point of view more efficient to combine fungicides to overcome these disadvantages.