Permax V1000 Vinylidene Chloride Emulsion

Transcription

1 Permax V1000 Vinylidene Chloride Emulsion PRODUCT DESCRIPTION Permax V1000 is an APE-free, low VOC, small particle size vinylidene chloride acrylate copolymer emulsion that displays extremely low moisture vapor permeability and excellent corrosion resistance at low thickness. Permax V1000 exhibits longer shelf stability than traditional vinylidene containing polymers. This polymer demonstrates corrosion protection at 1.5 mils (38µ) and adhesion over a variety of metal substrates. Primers formulated with Permax V1000 emulsion can be top coated with conventional acrylic topcoats for exceptional durability and corrosion resistance. FEATURES/BENEFITS APE-free emulsion Extremely low moisture vapor permeability Barrier protection: Aids in rust prevention Superior corrosion protection at 1.5 mils (38µ) Small particle size promotes shelf-life of up to one year Reduce settling tendency Enable formulations with low VOC for environmental compliance High Solids for better formulation latitude PHYSICAL CHARACTERISTICS* Appearance Milky White Liquid Total Solids, % by weight 60 Total Solids, % by volume 47 (Calculated Target) Density, g/ml 1.25 ph 1.8 Brookfield Viscosity**@25 C, cps 50 MFFT, ºC < 20 Freeze/thaw Stability Protect from freezing *Property values represent typical results only and are not to be considered specifications. ** Brookfield Viscosity Model LV, Spindle 60 RPM Trademarks owned by The Lubrizol Corporation The Lubrizol Corporation 2015, All Rights Reserved.

2 Page 2 TYPICAL APPLICATIONS Enable formulations for OEM and Refinish Primers Maintenance Primers Automotive primers Rust converting products Under hood and underbody coatings Barrier coatings SHELF LIFE/STORAGE Lubrizol recommends retesting the quality 1 year after the date of manufacture. Store unopened containers indoors at temperatures between 45 & 95 F (5ºC and 35ºC). Store in location protected from freezing. REGULATORY STATUS Please see the product s current Safety Data Sheet, SDS, for regulatory information. You can request a SDS at

3 Page 3 FORMULATION Carbon Black Maintenance Primer Model: PCG-CTG-PMXV1000-PR Material Weight In Pounds % Wt. Add the first 2 ingredients, mix for 5 minutes at low speed or until uniform. Water Bentone LT Add the next 3 ingredients at low speed and mix for 5 minutes. Pluronic F87 (30%sol n in water) Solsperse Surfynol 104H Disperse the following materials with high speed mixing using a Cowles blade until 7+ Hegman. Raven 1080 Ultra K-White Sierralite 603HS Adjust the following material with 28% ammonium to 6.5 ph. Then add slowly to the above ingredients and mix for 45 minutes. Permax V Add the last 2 materials slowly and mix for 30 minutes. Butyl Cellosolve EB Total Formula Constants: Typical Properties: Non-volatile (Wt. %) Viscosity cp Non-volatile (Vol. %) ph Density gr/ml 1.34 Wt./ Gal., lbs VOC gr/l (USA) VOC lbs/gallon (USA) VOC gr/l (EU) PVC (%) Pigment to Binder Ratio % Solvent on Resin Solids

4 Page 4 PERFORMANCE DATAi SALT SPRAY ASTM-B117 CORROSION AT SCRIBE (mm) Drawdown 1.5 mils (38 µ) dft Salt Spray ASTM-B hours 350 hours 500 hours Permax V Permax Competitor Average of two pannels. Substrate: CRS Curing Conditions: 7 days RT CORROSION AT SCRIBE (mm) Drawdown 2.5 mils (64 µ) dft Salt Spray ASTM-B hours 350 hours 500 hours Permax V Permax Competitor Average of two pannels. Substrate: CRS Curing Conditions: 7 days RT PERMAX V mil (38µ) DFT 500h PERMAX mil (38µ) DFT 500h Competitor 1 1.5mil (38µ) DFT 500h

5 Page 5 FORMULATION SUGGESTIONS Summary: Both and other PVDC polymers are supplied in the acidic form (ph ~2.0). Because of this, some special steps need to be taken to generate a stable formulation. Pigment dispersions are typically manufactured in a basic ph environment, and combining them with an acidic polymer can lead to instability. Surfactants: The surfactant in PVDC paints is for both pigment dispersion and to stabilize the higher ph pigment dispersion with the acidic PVDC polymer. Anionic or nonionic surfactants can be used. Nonylphenol 30 mole ethylene oxide, such as Pluronic F-87 (BASF) block copolymer surfactant has been found to provide the best coating stability. For ease of handling, a 30% solution of Pluronic F87 can be prepared ahead of time and held for use as a stock solution. Dissolve in water by adding Pluronic F87 slowly to water, with agitation, until the Pluronic F87 is incorporated or wet. Stop mixing, cover the mixture, and allow to equilibrate overnight. The resultant solution will be clear and fluid Other surfactants and dispersants that have been used successfully include Dowfax TM 2A1 (Dow Chemical), In combination with F-87, Byk 155 (BYK Chemie) or Surfynol 104H (Air Products) can be used. Barytes: A high purity, acid extracted grade is recommended. Barytes #1 types, such as BB1501 (Elementis), BB2501 (Rockwood), MitiWite 10 (Cimbar) or BariStar 9025 (Minerals Girona S.A.) are recommended. The natural and precipitated grades show poorer performance, overall. Other pigments: Avoid using pigments with reactive carbonates. In general, high purity extenders will provide superior performance. When chosing talcs or other filler pigments, low alkalinity and low oil absorption grades will provide better stability and performance. Cosolvent Choice: Butyl Cellosolve (Dow) has been shown to work very well with. Texanol (Eastman) ester alcohol has also been found to work well with. Recommended order of addition of these water immiscible coalescing solvents is add slowly under agitation as the final ingredient of the coating formulation. When added as the last ingredient to the grind, these cosolvents may cause flocculation of the pigment dispersion. As with all coatings, the level of cosolvent needed will depend on the application temperature, and the method of application. Spray application often requires additional solvent to compensate for solvent that volatilizes during spray application. It is recommended that finishes be checked for film formation under the lowest temperature and same application technique that will be used. Poor coalescence may be observed as micro-cracking. These cracks are pathways for moisture to penetrate the film and can lead to early blistering or corrosion. In the

6 Page 6 most severe cases, cracking may be observed, with the unaided eye, along the very edge of panels. Sometimes, however, some magnification may be necessary to see the micro-cracks. When reducing coating viscosity for spray application, if film coalescence is close to the minimum requirement for proper film formation, a water/coalescent combination may be needed to retain film formation, such as 10% Texanol in water or 10% Dowanol TM DB in water. Amine (ph adjustment): emulsion is supplied at a very low ph ( ). Before combining with the pigment dispersion, it is best to increase the ph of the system to approximately Although it is advisable to maintain an acidic ph, the ph may be made alkaline. Ammonia is recommended for ph adjustment. Rheology Modifiers: Clay thickeners, such as Bentone LT (Elementis) or Kelzan S (Merck Corp.) can also be used. If better flow is required, HEC can be used in conjunction with a polyurethane thickener such as Acrysol TM RM-8 (Rohm & Haas). Defoamers: Selection of a good defoamer to minimize pinholes in the film may be critical for optimum performance. Pinholes are pathways for moisture to penetrate the film and can lead to early blistering or corrosion. Surfynol DF-110L(Air Products) has been shown to provide good performance. Other defoamers that can be used include Rhodoline 643 (Rhodia) and SAFE 820. Flash Rust Additives: Most coatings exhibit no flash rusting if the coating equilibrates overnight before use. If the potential for flash rusting is present, the addition of an inhibitor, such as 10% Ammonium Benzoate solution (Caschem), Kadox 915 (Tayca Corp.), 10% Sodium Nitrite solution (Fisher) or Raybo 60 (Raybo) can be added. Carboset is a registered trademark of The Lubrizol Corporation or its affiliates Solsperse is a registered trademark of The Lubrizol Corporation or its affiliates Bentone is a Trademark of Elementis Specialties Pluronic is a Trademark of BASF Surfinol is a Trademark of Air Products K-White is a Trademark of Tayca Sierralite is a Trademark of Luzenac