DURAPREP SSP-1000 (PCM)

Description:

DURAPREP SSP-1000 is a non-etching acid cleaning system that prepares metal substrates for application of photo resists, usually under three minutes.

The DURAPREP SSP-1000 cleaning system removes oils, fingerprints, oxides and tarnish, and leaves a passivated surface that retards oxidation and inhibits hydrogen embrittlement in susceptible metals.

DURAPREP SSP-1000 used by itself or as a final pickle, will greatly speed and improve the entire preclean process.

Benefits:

• A true one-step cleaning system.
• Removes oxides, tarnish, oils & fingerprints.
• Cleans most metals in under 3 minutes.
• Easily controlled, replenishable, and long lived
• Is an excellent passivating system.
• Inhibits hydrogen embrittlement.

Properties:

Form:                                                Clear, greenish-yellow liquid
pH (as supplied):                            < 1
Specific gravity:                              1.12
Weight/Gallon                                 9.3458 lbs
Solubility, water:                             Infinite
Max Cu:                                            1000 ppm
Max Fe:                                             2000 ppm
Odor:                                                 Mild, characteristic

Applications:

DURAPREP SSP-1000 has been used successfully to clean and passivate the following metals for dry film lamination: BRASS, BRONZE, COPPER, BERYLLIUM COPPER, ALUMINUM, STAINLESS STEEL, KOVAR, TITANIUM, NICKEL, NICKEL SILVER, OTHER CUPRO NICKEL ALLOYS, AND MILD STEEL. SSP has been used as a cleaner for other process preparation is needed. Most metals processed through SSP-1000 will not oxidize for extended periods of time, allowing for process delays not possible using other cleaning methods.

Directions For Use:

MAKE-UP:  10 to 15% by volume in water

TIME: 30 seconds to 3 minutes.

TEMPERATURE: 110 °F to 115°F.

AGITATION: None required

OPERATION: Immerse until entire panel is clean and when rinsed, is uniformly hydrophobic or water-wet depending on the metal or alloy. Solution must be in motion, either by stirring or recirculating pump. Do not heat bath without stirring.

RINSING: Rinsing is crucial to the attainment of good results. Initial rinse should be spray followed by final D.I. If rack rinsing in an overflow rinse, the second rinse can backblow to the first, or primary rinse chamber which must go to the drain. Complete rinsing is the key, especially if wet laminating on stainless, as unrinsed cleaner acids can cause resist lock-in. Do not use recirculating rinses. Final D.I. rinse is recommended.

DRYING: Conveyor or hot turbine @ 125° to 150°F

HOLD TIME: Copper and copper alloys should be laminated within 2 to 4 hours. Other metals have much longer hold times but should still be laminated as soon as possible to minimize the handling problems.

REWORK: Panels can be reprocessed with no ill effects.

PROCESS NOTES: When processing brass reduce contact time or bath temperature to avoid the leaching of zinc. Some metals, such as stainless steel, can be processed at ambient temperature simple by increasing the dwell time in the bath. Metals with extremely thick coatings of oil or other protective materials may be cleaned through a dual bath cleaning system of a hot alkaline bath followed by SSP-1000.

Equipment:

TANKS: PVC, CPVC, polyethylene, ABS

HEATERS: Quartz, Teflon coated.

PLUMBING: PVC, CPVC, Polyethylene

PUMPS: PVC, CPVC

SEALS: Teflon

Control:

Analytical procedure for bath strength and replenishment:

1. Equipment:
   1. 250 ml beaker
   2. 5 ml pipet
   3. 50 ml buret
2. Reagents
   1. Sodium Hydroxide, 0.1 Normal (0.1 N NaOH)
   2. 0.5 % Phenolphthalein in IPA
3. Procedure
   1. Pipe 5ml of bath into 250 ml beaker.
   2. Add 100 ml D.I. water
   3. Add four (4) drops of indicator
   4. Titrate with 1.0 N NaOH to a red end point. Approach carefully as change is abrupt.
4. Calculations
   1. ml of titrate X 3.20 = % by volume
5. Replenishment:
6. Subtract % bath strength in gals from original make-up and add the difference back to the bath. EXAMPLE: A 60 gallon bath @ 10% make-up = 6 gallons. A bath titration of 8% = 4.8 gallons (.08 X 60 = 4.8). Subtract 4.8 gallons from 6 gallons = 1.2 gallons of concentrate needed to return the bath to the original 10% make-up of six gallons.

Analytical Procedure for Copper Content:

1. Equipment
   1. 10 ml pipet
   2. 50 ml buret
   3. 100 ml measuring cylinder
   4. 250 ml beaker
2. Reagents
   1. 0.01 N Soduim Thiosulfate(Na₂S₂O₃)
   2. Potassium Iodide, AR grade (KI).
   3. Thyodene indicator
3. Procedure
   1. Pipet 10 ml of working bath into 250 ml beaker
   2. Add 100 ml of D.I. water into 250 ml beaker
   3. Add 3 grams of KI
   4. Add 0.5 grams Thyodene indicator
   5. Titrate with 0.01 Normal (Na₂S₂O₃) from dark brownish-purple color to a yellow, to a pale tan colored end-point.
4. Calculations
   1. ml of titrate X Normality X 63.5 / ml of sample = gms/liter.
   2. Grams/liter copper X 1000 = pp

    

Analytical for Iron Content

1. Equipment:
   1. 250 ml beaker
   2. 10 ml pipet
   3. 50 ml buret
2. Reagents:
   1. Permanganate solution:
      1. Dissolve 3.3 gms KmnO₄ in 1000 ml D.I. water
   2. Sodium Azide Solution:
      1. Dissolve 5. gms NaN_{3 in 100 ml D.I. water.}
   3. Conc. AR grade Ammonium Hydroxide (NH₄OH)
   4. AR grade acetic acid
   5. AR grade potassium Iodide (KI)
   6. 0.10 Normal sodium thiosulfate.
   7. Thyodene indicator
3. Procedure:
   1. Pipet 10 ml sample to beaker
   2. Add KmnO₄ solution dropwise until permanent pink color is obtained.
   3. Add one (1) drop NaN_{3 solution to discharge the pink color.}
   4. Add conc. NH₄OH dropwise until a brown precipitate of Fe(OH)₃ forms
   5. Add 10 ml acetic acid
   6. Add 3 grams of Potassium Iodide.
   7. Titrate with 0.10N Na₂S₂O₃ until the yellow color becomes faint.
   8. Add 0.5 grams thyodene indicator
   9. Continue titration with Sodium Thiosulfate until the blue color disappears.
4. Calculations:
   1. ml of titrate X 0.1N X 56 / (ml sample X 10) = % iron
   2. % iron (Fe) / 100 X 1000 = gms/liter
   3. grams/liter X 1000 = ppm

Disposal:

1. Pump spent solution to a separate treatment tank.
2. Neutralize with Sodium or Potassium hydroxide to a pH of 8 or 9.
3. Add appropriate metal complexing agents, and a flocculent as required, for the removal of copper (Cu), iron (Fe), and any other contained metals.
4. Filter to remove precipitate, or allow to settle and siphon the supernatant clear liquid from the top.
5. Check with local city or country sanitation district on disposal to sewer. Generally the only requirements are neutralization to the pH ranch between 6 and 12 and removal of heavy metals. All materials in DURACLEAN 1075 are biodegradable and have no effect on waste water treatment systems.

NOTE: Neutralizing HCI with NaOH yields sodium chloride (table salt) and water. With sulfuric acid the product of neutralization is a sulfate salt (sodium sulfate) and water. Neutralizing SSP with sodium hydroxide will not be a cause of chlorine gas release.

Safety:

DURAPREP SSP-1000 is strongly acidic and should be used in accordance with good safety practices. Chemical goggles, face shield, apron, gloves, and any other appropriate safety equipment should be worn when mixing or handling this material.

First Aid:

In case of skin contact, immediately flush with copious quantities of fresh, cool water. If burning persists, see a physician right away.

In case of eye contact, flush immediately with cool, fresh water for at least 15 minutes by the clock, and see a physician immediately.

In case of accidental ingestion, consult a physician immediately.

Avoid breathing mist or vapors. Inc case of inhalation, remove person to fresh air. If breathing is difficult or labored, obtain medical assistance right away.

Venting:

It is important that the DURAPREP SSP bath be properly vented. Do not use this product in any operating unit that does not have an adequate ventilation system.

Storage:

Keep containers sealed until needed. Keep partial containers closed at all times. Store product between 40°F and 100°F. Keep away from sources of direct heat. Keep away from alkaline materials and strong oxidizing agents.

Shelf Life:

DURACLEAN LPH is guaranteed for one (1) year from date of receipt in unopened containers.

Containers:

Five gallon pails and 55 gallon nonreturnable plastic drums.

Classification:

National Motor Freight Classification NO. 48580, Sub 3
DOT Hazardous Material Description: Compound, cleaning, liquid
Hazard Class: #8
I.D. Number: NA 1760, Packing Group II

The information contained herein is based on our experience and is believed to be reliable. However, since methods and conditions of use of our products as described are beyond our control, both the product and instructions for its use are offered without warranty, expressed or implied. No information on this data should be construed as a recommendation by DURATECH INDUSTRIES, INC., to use any product in contravention of any patent right.