SYSTEM P-180D polyurethane primer

General:
SYSTEM P-180D is a two component 100% solids polyurethane primer. SYSTEM P-180D eliminates
long wait times and blistering of fast set topcoats normally associated with conventional solvent and water
based primers. P-180D significantly improves adhesion and film integrity of fast set polyurea and
polyurethane elastomers to a wide range of substrate. Anti-corrosive additives give P-180D superior
performance on steel in corrosive environments. P-180D has low viscosity and long pot-life, allowing easy
application with conventional spray equipment.
Substrate Preparation:
Substrate should be clean, dry and free of any loose or foreign material. Proper substrate preparation
will ensure optimum performance.
Metal: Should be blasted to a 2 mil profile for best results.
Concrete: Should be dry (new concrete should be cured for a minimum of 30 days) and
free of any laitance, scale or contaminants. For more details on concrete preparation see SSPC SP-13
/ NACE no. 6 or ICRI Guideline No. 03732.
Wood: Must be dry and free of contaminants.
It is good practice to apply the primer to a small test area prior to starting project. Presence of excess foam
in cured primer indicates moisture content is too high.
Mixing:
Thoroughly mix SYSTEM P-180D RESIN prior to adding ISO. Mix equal parts by volume P-180D RESIN and
P-180D ISO. Mix well to achieve uniform consistency. Mixed, uncatalyzed P-180D will have a potlife of
approximately 1 hour. Elevated temperature and/or addition of catalyst will shorten potlife. Mix only the
quantity you intend to use immediately. If a shorter cure time is desired Catalyst DA may be added. Add
Catalyst DA to P-180D RESIN and mix thoroughly prior to mixing with P-180D ISO. Do not leave mixed
primer in spray equipment longer than necessary.
Application:
Apply using spray, brush or roller. One wet pass is recommended. Do not cover the profile on blasted metal.
A heavier film will slow cure time and can produce film irregularities. Porous concrete and wood may require
a heavier film and back rolling to fill any voids. Avoid pooling in low areas. Primer does not need to be tack
free before applying topcoat. Touch dry is acceptable; however, do not put area back into service before
primer has completely cured - approximately 12 hours. Apply topcoat in multiple thin passes to avoid excess
exotherm. Exotherm can cause film stress in topcoat and pull away uncured primer.
Clean-up:
Clean all tools and equipment with gun wash solvent. If product has begun to set a more powerful cleaner
(NMP,Allsolve, etc) may be required.
Return to Service:
Allow a minimum of 24 hours cure before putting into service.