Research Bulletin 2000-5
Refinishing Plastic Parts:DuPont


Plas-Stick Flex-Additive 2350S

Desciption

Plas-StickTM Flex-Additive 2350S is designed for use in selected ChromaSystemTM undercoat, Single-stage and clearcoat products. 2350S is part of a system of products designed to improve the adhesion, chip resistance and flexibility of ChromaSystemTM products over semi-flexible and fully-flexible plastics.

General Information

Components

2350S - Plas-StickTM Flex-Additive is for use with the following products:

Mix Ratio

Undercoats
Volume
Weight (cum.pt.)
42440S
3
335.1
12305S
1
412.0
42475S
1.5
512.4
2350S
1
582.9
42410S
3
385.3
12305S
1
462.2
42475S
1.5
562.6
2350S
1
633.1
42470S
3
336.7
12305S
1
413.6
42475S
1.5
514.0
2350S
1
584.5
1120S
4
336.3
1125S
1
391.5
1130S/1135S
2
490.4
2350S
1.5
572.7
1140S
4
343.3
1125S
1
397.4
1130S/1135S
2
494.7
2350S
1.5
575.5

 

Clearcoats
Volume
Weight (cum.pt.)
7800S
9
316.3
7875S
3
432.5
2350S
1
467.8
V-7500S
9
306.0
V-7575S
3
417.2
2350S
1
452.5
7500S
9
310.3
7575S
3
418.2
2350S
1
453.5
3500S
9
289.7
3575S
3
396.4
2350S
1
428.4
1075S
10%
466.1
72200S
9
238.4
12305S
3
325.6
2350S
1
353.4
12375S
25-30%
451.3
72400S
6
245.6
12305S
3
378.4
2350S
0.5
398.7
12385S
15-20%
465.5

Topcoats

For ChromaPremierTM Single-Stage and ChromaOne® Single-Stage topcoats, add 2 ounces of 2350S per ready-to-spray quart.

Tips For Success

7600S and V7600S are not recommended for use on plastic parts.

Pot Life
30 - 60 minutes. Mix the appropriate amount of material for the job and clean equipment immediately after use.

Application
Substrates: Flexible plastics that have been properly prepared.

Surface Preparation

All plastic substrates must be thoroughly cleaned in the following manner:

Tips for Success

Note:
Tempering is not beneficial for urethane parts (PUR) due to "post cure" temperatures in excess of 140° F.

Caution:
Do not use solvent-based cleaners on unprimed plastic or fiberglass (i.e., 3900S, 3901S, 3919S, 3939S) due to static buildup and the potential for flash fire.

Gun Setups*

Conventional

Siphon Feed 1.4 mm - 1.6 mm (.055" - .063")
Gravity Feed: 1.3 mm - 1.5 mm (.051" - .059")

HVLP

Siphon Feed 1.4 mm - 1.6 mm (.055" - .063")
Gravity Feed: 1.3 mm - 1.5 mm (.051" - .059")

Note:
The use of ChromaSystemTM Flex-Additive 2350S will act to reduce the ready-to-spray viscosity of ChromaSystemTM products. In addition, the application of products containing 2350S are typically small in area of coverage and require low film builds for maximum performance. For these reasons, we recommend a more restricted gun setup compared to normal applications.

Air Pressure*

Siphon Feed 35 - 40 psi @ the gun.
Gravity Feed: 30 - 35 psi @ the gun.

HVLP

Siphon Feed 6 - 8 psi @ the gun cap.
Gravity Feed: 6 - 8 psi @ the gun cap.

* The listed setups cover the usual range for various application equipment. For information on specific manufacturers' equipment, see the Appendix section titled "Equipment Information" in DuPont's ChromaSystemTM Technical Manual.

Application/Dry Times

Recoatability/Re-Repair: Allow overnight dry before performing re-repair operations.

Sanding

The use of 2350S in primer, single-stage and clearcoat will slow dry and cure times. Allow additional dry time before sanding flexibilized primer surfacer, or sanding and polishing single-stage and clearcoat finishes.

Cleanup: Clean spray equipment as soon as possible with DuPont Lacquer Thinner.

VOC:
3.5 lbs./gal.
Weight Solids:
57.1%
Volume Solids:
50.8%
Flash Point:
See MSDS

VOC Regulated Areas

These directions refer to the use of products which may be restricted or require special mixing instructions in VOC regulated areas. Follow mixing and usage recommendations in the VOC Compliant Products Chart for your area.

Safety and Handling

Before using any DuPont product, be sure to read all safety directions and warnings. WEAR A POSITIVE-PRESSURE, SUPPLIED AIR RESPIRATOR (NIOSH TC-19C), EYE PROTECTION, GLOVES AND PROTECTIVE CLOTHING WHILE MIXING ACTIVATOR WITH PAINT, DURING APPLICATION AND UNTIL ALL VAPORS AND SPRAY MISTS ARE EXHAUSTED. Follow respirator manufacturer's directions for respirator use. INDIVIDUALS WITH HISTORY OF LUNG OR BREATHING PROBLEMS OR PRIOR REACTION TO ISOCYANATES SHOULD NOT BE EXPOSED TO THIS PRODUCT. Do not permit anyone without protection in the painting area. This product is intended for industrial use only by professional, trained painters.