Traditional Patinas to darken Copper, Brass and Bronze

For decades Birchwood has been the trusted name for traditional patinas.

Antique Black® M24 Brush-On Liquid

Liquid Concentrate Blackening Solution to create black Brass patina and black Copper patina

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.

Antique Black M24

740040

1 Quart
$49.80
/Quart
Add to Cart

740050

1 Gallon
$149.30
/Gallon
Add to Cart

740051

5 Gallon
$109.00
/Gallon
Add to Cart

Antique Brown® M38 Immersion or Brush-On

Traditional Patina Solution to achieve a golden to chocolate brown brass patina, bronze patina, or copper patina

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.

Antique Brown M38

750140

1 Quart
$49.80
/Quart
Add to Cart

750150

1 Gallon
$129.30
/Gallon
Add to Cart

750151

5 Gallon
$94.40
/Gallon
Add to Cart

750152

15 Gallon
Call for
Pricing
Request Quote

750158

55 Gallon
Call for
Pricing
Request Quote

Aluma Black® A14 Brush-On Liquid

Blackening Solution for Aluminum Alloys

A room temperature Blackening concentrate for cast and machinable grades of aluminum - ideal for simulated Pewter or light duty service when protected by a clear topcoat.

Aluma Black A14

630040

1 Quart
$49.80
/Quart
Add to Cart

630050

1 Gallon
$149.30
/Gallon
Add to Cart

630051

5 Gallon
$109.00
/Gallon
Add to Cart

Aluma Black® A15 Immersion Concentrate

Traditional Patina Solution to create a black Aluminum patina

A room temperature Blackening Concentrate for cast and machinable grades of aluminum - ideal for simulated Pewter or light duty service when protected by a clear topcoat.

Aluma Black A15

620050

1 Gallon
$149.30
/Gallon
Add to Cart

620051

5 Gallon
$109.00
/Gallon
Add to Cart

620058

55 Gallon
Call for
Pricing
Request Quote
Need help deciding or instructions on How to Patina?
Call our chemists at 952-937-7945