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Trial Number 3

Client Number 536

Project Number 1

Trial Purpose:

Determine the HSP sphere for Flexcon's 1565 copolyester resin topcoat

Date Run:

11/14/2025

Experiment Procedure:

24 scintillation vials were filled with 24 different solvents from TURI's HSP matrix. The 1565 co-polyester coating was spread onto aluminum foil and allowed to air dry for 3-4 hours. After it was dry, but not hardened, balls of adhesive were scraped into each of the 24 scintillation vials and allowed to soak. For the first hour, visual observations were taken every 10 minutes, then following the first hour observations were taken every half hour up until 3 hours. The vials were then allowed to sit overnight before final observations were taken. A "0" denotes that less than 80% of the target soil was dissolved. While a rating of  "1" denotes greater than 80% dissolution of the target soil. 

Trial Results:

Matrix # Final Score
1 - Toluene 1
2 – Dimethyl Carbonate 1
3 - Xylenes 0
4 – Benzyl Alcohol 0
5 – Ethylene glycol 0
6 – Methyl Acetate 1
7 - Undecane 0
8 – Ethyl Lactate 0
9 – Acetone 1
10 – Ethyl Acetate 1
11 – Methanol 0
12 – Ethanol 0
13 – 1,3-dioxolane 1
14 – Diethyl Carbonate 0
15 – 1-propanol 0
16 – Isopropanol 0
17- Propylene Carbonate 0
18 – Thiophene 1
19 – 1-Methoxy-2-Propanol 0
20 – Dimethyl Sulfoxide 0
21 – 1-Butanol 0
22 – Dimethyl glutarate 1
23 – Anisole 1
24 – 2-Butoxyethyl-Acetate 0

Success Rating:

Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.

Conclusion:

Based on the results of this test, Toluene, Dimethyl Carbonate, Methyl Acetate, Acetone, Ethyl Acetate, 1,3-dioxolane, Thiophene, Dimethyl Glutarate, and Anisole were all successful in dissolving the target soil. The other 15 solvents were not successful in dissolving the target soil. 

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