Designed to be user and environmentally friendly, Birchwood Technologies blackening and antiquing processes are easy and safe to use in either manual or fully automatic lines. They offer you the maximum control over finish and operating cost.
Coupled with the Ion Exchange System, the line requires no water, drain or vent hookup and can be located anywhere in the plant in a manufacturing cell or any convenient location. Birchwood Technologies is the smart alternative to other oxidizing processes.
A general-purpose Blackening and Browning concentrate for brass, bronze and copper alloys. Rapid reaction makes M20 ideal for use on manual finishing lines. Contains buffering agents which make the solution resistant to low level contamination or carry-over without affecting finish color or coverage. Use at 20% by volume for Black finishes; 10-15% for a full range of pleasing Brown tones.
General purpose Blackening and Browning concentrate for brass, bronze or copper alloys. Produces the same colors as M20 with the same high coverage and rapid reaction, but without the extra solution buffers, for even lower operating cost.
A high-strength Concentrate for browning of brass, copper, bronze. Also Blackens nickel and silver. High coverage per gallon and low operating cost.
A unique Brush-On Concentrate for Blackening or browning of brass, bronze or copper alloys. Produces pleasing US10B finishes on large architectural surfaces, sculptures, or engravings -- on new or reconditioned parts. Color and reaction speed can be controlled by diluting with water. Can be used undiluted for Black finishes, or diluted by 10-50% for brown tones or slower reactions.
For Blackening/antiquing decorative brass, copper and bronze surfaces without runs and drips. Unique Gel formula has a slower reaction than the M24 liquid, giving the user an extra measure of control when dealing with large surfaces. Gray/Black finish.
For browning/antiquing decorative brass, copper and bronze surfaces without runs and drips. Unique Gel formula has a slower reaction than the M38 liquid, giving the user an extra measure of control when dealing with large surfaces. Medium brown finish.
Ideal for use in barrel lines or automatic lines, the reaction is slower (1-4 minutes) to allow the operator to stop at light or medium Brown tones with ease, as well as chocolate Browns on brass, bronze or copper alloys. Use at 20% by volume for darker tone, 10-15% for lighter Browns, or undiluted for rich Brown brushed-on finishes.
For attractive Verde Green finishes on copper/brass/bronze surfaces. Simulates the natural Green Patina formed by outdoor weather exposure. Applied at room temperature by Brush-On, Immersion or spray techniques, the Patina Green can be used directly on the metal surface, or as a supplemental coloring agent over a Brown or Black base coat. The Green color forms when the solution is allowed to dry on the metal surface.
Applied at room temperature and can be used at 100% concentrate directly from container. For immersion applications dilute with tap water to make a bath of 10%-50% by volume and use tanks made of Polypropylene, PVC, PVC coated steel or other acid-proof material. Also it may be used with racks, baskets, barrels made from similar acid proof materials.