SXT Catalyst SILC9120 is a proprietary curing catalyst for use with the UNION SILEXTREME system and added just prior to use.



Add SXT Catalyst at 3-5% on total ink weight just prior to application and make sure that the catalyst is mixed thoroughly. Once added use the ink within 72 hours. Only catalyze enough amount for up to 1-2 days of print production as addition of the catalyst creates a pot life. Catalyzed inks are best stored under room temperature or less. For use with toners, mix SXT Toners with SXT Matte Base and SXT Catalyst thoroughly to print. Mix 4-5% catalyst with RFU White or Black by weight - use 4% for longer open time or 5% for the shortest flash.


Use any catalyzed inks within 72 hours. Do not leave catalyzed silicone ink on the screen. The SXT Catalyst can crystallize on exposure to temperatures below 80F, and go back to normal condition when the temperature goes above 80F. Therefore, it is recommended to store the SXT Catalyst in a normal room temperature above 90F.


Union Ink does not knowingly add plasticizers containing the phthalates listed and outlined in California Bill 1108, CPSIA HR-4040 and Oeko-tex Standard 100. The plasticizers identified may include di-(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), diisononyl phthalate (DINP), diisodecyl phthalate (DIDP), di-n-octyl phthalate (DnOP), (DIBP) Di-iso-butyl, and (DMP) Dimethylphthalate, including esters of ortho-phthalic acid and are not direct ingredients in the manufacture of our Non-Phthalate Inks. Union Ink does not test the final product for amounts of the aforementioned phthalate plasticizers and esters and encourages all users to conduct testing for their intended use.

Disclaimer: Not all Union products are available in every country. Please check with your local representative for availability. The data presented in this leaflet are in accordance with the present state of our knowledge, but do not absolve the user from carefully checking all supplies immediately on receipt. We reserve the right to alter product constants within the scope of technical progress or new developments. The recommendations made in this leaflet should be checked by preliminary trials because of conditions during processing over which we have no control. Recommendations for use do not constitute a warranty, either express or implied, of the fitness or suitability of the products for a particular purpose.

Product Overview:

Brand: Union Ink
Product Code: SILC9120
Industry: Inks
Application: Screen Printing
Category: Modifier/Additives
Sub Category: Catalyst
Chemistry: Silicone
Substrate(s): Other
Best Used By: 12 months
Certification(s): ISO9001


Viscosity: Medium


Emulsion Types: Direct
Cleanup: Non-hazardous screen wash


Thinner: SILC9000 SXT Viscosity Reducer


Storage Temperature: 65°F - 95°F (18°C - 35°C)