Tramaco TRAPYLEN chlorine free modified polyolefin grades for priming and coating PP, PP/EPDM, TPO and PE. Solid resin, xylene solution and APEO-free waterborne dispersion, with an honest account of where they match a chlorinated CPO and where they ask more of your line.
Chlorinated polyolefin has been the standard way to get paint, ink and adhesive to hold on polypropylene since the chemistry was commercialized. It works because chlorinating the polyolefin backbone makes it polar enough for the coating while leaving it compatible enough with the substrate to anchor into it. Nothing has replaced that mechanism.
What changes is who is allowed to use it. A chlorine constraint on a formulation normally comes down from a customer specification, a corporate materials policy, or a review of halogen content in a finished article. A single rule banning the chemistry outright rarely triggers it. Either way a working adhesion promoter has to come out, and whatever replaces it has to hold the same adhesion.
Tramaco has aimed its recent development at the chlorine free side of the range. Seven grades on its current tables do not appear in its own 2015 product introduction, and five of the seven carry no chlorine: the 9351 W 30, 9500 W and 9700 W dispersions in the molded parts case, and 9352 W and 9703 W among the film primers.
Send us the substrate, the coating or ink system it goes into, and what the specification actually excludes. We will name the candidate grade, send the data sheet, and ship a sample.
Request a SampleThe chlorine free grades are modified polyolefins, written APO on Tramaco's own data sheets and sometimes called amorphous or non-chlorinated polyolefin elsewhere. They reach adhesion the same way the chlorinated grades do, by being close enough to the substrate polymer to entangle with it while carrying enough polarity to bond into the coating above. The difference is that the polarity is built in without chlorine on the backbone.
TRAPYLEN 920 X and 950 X both run at 10 percent solids in xylene and differ by crystallinity: 920 X uses the amorphous polymer, 950 X the crystalline one. Pick between them on compatibility in your own system, not on a performance ranking. TRAPYLEN 911 S carries the same chemistry as a solid resin, for formulators who dissolve into their own solvent.
On the water side the range runs wider. The dispersions are APEO-free across the board, at 30 percent solids in the molded parts case and 12 percent as ready-to-use film primers. One of them, 9351 W 30, is crosslinkable, so a two-component route to higher chemical and heat resistance stays available without going back to chlorine.
For reference, the chlorinated grades this range replaces are maleic anhydride grafted chlorinated polypropylene, CAS 68609-36-9, and straight chlorinated polyolefin, CAS 68442-33-1. Chlorine content across Tramaco's chlorinated range runs from 2.5 percent up to 43 percent, and that spread is why a conversion gets confirmed on a panel.
Housings, panels, containers and profiles primed for paint on an existing coating line, with no flame or plasma hardware added.
X 9100 M on a solvent line and 9350 W or 9352 W on a waterborne one, applied by rotogravure at application solids.
9700 W as an additive and 9703 W as a film primer. PE is the harder substrate for this chemistry and the grades aimed at it say so.
APEO-free dispersions that answer the solvent question and the chlorine question in the same move.
9351 W 30 is crosslinkable, for coated parts and film that face chemicals or heat.
X 9100 M carries matting agents as standard. Stir before every use.
The eleven chlorine free TRAPYLEN grades Tramaco currently publishes, with chemistry, form and solids from its own data. Each links to the application case page it belongs to, where the full grade table and the processing detail sit.
| Grade | Form | Solids | Where it fits |
|---|---|---|---|
| TRAPYLEN 911 S | Solid resin | 100% | The base APO polymer, for your own solvent system |
| TRAPYLEN 920 X | Solution in xylene | 10% | Amorphous polymer |
| TRAPYLEN 950 X | Solution in xylene | 10% | Crystalline polymer |
| TRAPYLEN 9351 W 30 | Waterborne dispersion | 30% | Crosslinkable |
| TRAPYLEN 9500 W | Waterborne dispersion | 30% | High softening point, the newest grade of the case |
| TRAPYLEN 9600 W | Waterborne dispersion | 30% | Chlorine free and APEO-free |
| TRAPYLEN 9700 W | Waterborne dispersion | 30% | Additive for polyethylene, APEO-free |
| TRAPYLEN X 9100 M | Solution in xylene | 12% | TPO film, contains matting agents |
| TRAPYLEN 9350 W | Waterborne dispersion | 12% | TPO film, and runs as an adhesion promoter in inks and paints |
| TRAPYLEN 9352 W | Waterborne dispersion | 12% | TPO film |
| TRAPYLEN 9703 W | Waterborne dispersion | 12% | PE film |
If the specification limits chlorine without excluding it, TRAPYLEN 8000 carries 2.5 percent and TRAPYLEN 777 carries 5 percent, against the 20 to 43 percent the workhorse grades run. Both crosslink, and 777 reacts with polyisocyanates. Values here follow Tramaco's published typical figures; ask for the current data sheet on any grade and we will send the revision that is live today.
Surface preparation. The chlorine free TPO primers want the film physically pretreated, corona to a surface tension of about 50 millinewtons per meter, before the primer goes on. The chlorinated grades are more forgiving on that point. If your line already runs corona this costs nothing, and if it does not, settle it before the trial.
Surfactant, on the waterborne route. The dispersions carry no surfactant package of their own. They are raw materials for your formulation, not ready-to-use coatings, in the molded parts case. Keep application solids at 10 percent or above so wetting works with a small surfactant addition. An excess of surfactant costs adhesion between the primer and the coating above it, which is the failure that gets blamed on the primer.
Printing ink is the exception. The grades Tramaco recommends for adhesion additives in printing inks are all chlorinated, and the honest answer is that the chlorine free range does not yet cover that case the way it covers molded parts and film. The one crossover is 9350 W, which Tramaco lists as an adhesion promoter in inks and paints at around 30 percent of the formulation as well as a film primer. If an ink project has a chlorine constraint, tell us and we will take the question to Tramaco's technical team.
Tell us the grade you run now, the substrate, and whether the line has corona or flame treatment. We will name the closest chlorine free candidate and set up a trial honestly, including telling you when the chlorinated grade is still the right answer.
Request a SampleP.A.T. Products is the exclusive North American distributor for the TRAPYLEN range. These are made-to-order products manufactured at Tramaco's plant near Hamburg and shipped from Germany, and selected standard grades also pass through our US warehouse. Tell us the grade and the volume and we will confirm the lead time and current availability before you plan a first order.
Waterborne grades ship in PE drums and the solvent grades in iron drums, with other packing available on request. Storage is at least six months in closed original packing at 15 degrees C, and the waterborne grades have to be protected from frost. Technical Data Sheets and Safety Data Sheets are available on any grade; tell us what your qualification review needs and we will pull the documents.
Yes. Chlorine free modified polyolefins, usually written APO, do the same job through the same mechanism of polyolefin compatibility, without chlorine on the backbone. Tramaco makes them as solid resin, as a xylene solution and as APEO-free waterborne dispersions, covering the molded parts and film primer cases. The printing ink case is still served by chlorinated grades.
The chlorine free TPO film primers do. Tramaco specifies physical pretreatment to a surface tension of about 50 millinewtons per meter before the primer is applied. The chlorinated grades are less demanding on surface preparation, and that difference is the main thing to plan for in a conversion.
Yes, across the waterborne range. They also carry no surfactant package of their own, so they are raw materials for your formulation, not ready-to-use products, in the molded parts case. Keep application solids at 10 percent or above so wetting works with a small surfactant addition, because an excess of surfactant costs adhesion between the primer and the coating.
CPO is chlorinated polyolefin, typically maleic anhydride grafted chlorinated polypropylene, and the chlorine content across Tramaco's range runs from 2.5 to 43 percent. APO is a modified polyolefin with no chlorine at all. Higher chlorine buys compatibility with other resins, pigment wetting, gloss and chemical resistance, which is why a conversion is confirmed by trial rather than assumed.
