API's optical hard coatings are available in clear and non-glare finishes. Our hard coatings can greatly improve the chemical and scratch resistance of both acrylic and polycarbonate.

Clear Hard Coatings

Gardner Gloss Reading	Substrate Availability	Composition	Uses
NA	Acrylic or Polycarbonate	Cross Linked Acrylic	Any application where scratch resistance is needed, but external light reflections are not an issue. Very good scratch resistance.

Anti-Glare Clear Hard Coatings

Gardner Gloss Reading	Substrate Availability	Composition	Uses
75	Acrylic or Polycarbonate	Cross Linked Acrylic	Ideal for low to medium light applications. Display resolution is good.
54	Acrylic or Polycarbonate	Cross Linked Acrylic	Ideal for very bright light applications. Display resolution is fair.

Hard Coating Performance Specifications

Scratch (Abrasion) Resistance 75 and 54 Gloss High Resolution Diffusion-Hard Coats (HRD-HC)
	Haze% (1)
	Uncoated	Coated
Steel-Wool Scratch (2)	31.1	0.4
Taber Abrasion (3)	26.2	3-4 (4)

1. Haze: ASTM D-1003
2. Steel-Wool Scratch: Steel-wool rotary test representing severe scratching using a #0000 steel-wool pad at 24 psi for 100 rotations.
3. Taber Abrasion: ASTM D-1044 (CS10F wheel with 500-gram load).
4. 100 Cycles

Chemical Resistance

	75 and 54 Gloss
Gasoline	M
Toluene	S
Acetone	S
Ethanol	L
Trichloroethylene	S
5% Ammonia	S
10% Caustic Soda	S
50% Caustic Soda	S
10% Sulfuric Acid	L

L-Long Term Contact,24+ hours
S-Short-term contact, up to 1 hour
M-Medium-term contact, up to 8 hours
X-Immediate attack

Coating Composition

Clear Hard Coatings, 54 and 75 Gloss

Organic Cross Linked Acrylic
Spray Coated
Radiation Cured (UV)