FILCO reactive polyurethane film formers
Blocked isocyanate polyurethane dispersions that crosslink on the line. Unblocking at 266 or 320 degrees F, for increased temperature and hydrolysis resistance.
Blocked isocyanate polyurethane dispersions that crosslink on the line. Unblocking at 266 or 320 degrees F, for increased temperature and hydrolysis resistance.
A reactive film former carries blocked isocyanate, and when the line reaches the unblocking temperature the isocyanate is released and the film crosslinks in place. A crosslinked film resists temperature and hydrolysis better than the same polymer uncrosslinked.
That makes the unblocking temperature the number to design around, and COIM publishes it per grade. Four of the five unblock at 320 degrees F. FILCO 8813 unblocks at 266 degrees F, which is the grade for a line that cannot reach the higher temperature.
The family is aliphatic, hydrazine free and non-ionic, the same backbone as the other two polyurethane families. COIM's stated characteristics are increased temperature resistance and increased hydrolysis resistance, both of which come from the crosslink rather than from the polyol alone.
Five grades are published across three polyols. FILCO 75007 and 7804 are polyether. FILCO 7704 is polycarbonate. FILCO 7799 is polyester. FILCO 8813 is polyether at the lower unblocking temperature. Tg spans minus 47 to 111 degrees F, which is the widest spread of any FILCO polyurethane family.
It is also written as reactive polyurethane dispersion, blocked isocyanate film former, crosslinking sizing, and PUD film former.
| Property | Typical value |
|---|---|
| Chemistry | Aliphatic reactive polyurethane dispersions, non-ionic, with blocked isocyanate |
| Hydrazine | Hydrazine free across the family |
| Unblocking temperature | 320 degrees F on four grades, 266 degrees F on FILCO 8813 |
| Solids content | 40 to 52 percent depending on grade |
| Average particle size | 300 to 1500 nm depending on grade |
| Tg range | Minus 47 to 111 degrees F |
| Stated characteristics | Increased temperature resistance and increased hydrolysis resistance |
| Published grades | 5 |
| Matrix | Thermoplastic |
Typical values from the manufacturer's technical data sheet. They describe the product, they are not a specification. We will send the current TDS and the batch documentation your qualification needs.
Tell us the binder system, the property you are targeting, and the volume you expect. We will confirm the grade, send the documentation, and ship a sample from North American stock.
| Grade | Polyol | Solids | Av. particle size | Tg | Unblocking temperature |
|---|---|---|---|---|---|
| FILCO 75007 | Polyether | 43 percent | 300 nm | Not determined | 320 degrees F |
| FILCO 7704 | Polycarbonate | 44 percent | 650 nm | 16 degrees F | 320 degrees F |
| FILCO 7804 | Polyether | 40 percent | 700 nm | Minus 47 degrees F | 320 degrees F |
| FILCO 7799 | Polyester | 44 percent | 1500 nm | 111 degrees F | 320 degrees F |
| FILCO 8813 | Polyether | 52 percent | 1400 nm | 108 degrees F | 266 degrees F |
Values are the manufacturer's published typical figures. Ask for the current technical data sheet on any grade and we will send it with the matching safety data sheet.
Where a non-reactive film softens before the process is finished with it.
Crosslinking raises hydrolysis resistance beyond what the polyol gives on its own.
FILCO 8813, the only grade that unblocks at 266 degrees F.
Once crosslinked the film is set, which is the difference from the non-reactive families.
It is specified where the formulation needs crosslinks in place, so temperature and hydrolysis resistance both rise, unblocking temperature published per grade, so the process can be designed to it, a 266 degree F option in FILCO 8813 for lower temperature lines, polyether, polycarbonate and polyester polyols all available, and aliphatic and hydrazine free, like the rest of the polyurethane range.
The unblocking temperature has to be reached, and held, or the crosslink does not happen and the grade behaves as an ordinary non-reactive dispersion. Confirm the line actually gets there before specifying a 320 degree F grade.
Applied at the forming line in a sizing bath like the non-reactive grades. The difference appears downstream, at temperature.
Where the line tops out below 320 degrees F, FILCO 8813 at 266 degrees F is the published route.
Package sizes: Made to order in the pack size the line needs. Tell us the volume and we will confirm..
Storage: Store in the original sealed container, protected from frost and from direct sun. Freezing destroys a water based dispersion permanently. Reactive grades carry blocked isocyanate, so confirm the shelf life on the current data sheet and do not store above ambient.
These grades carry blocked isocyanate. Read the safety data sheet before handling, and note the handling conditions for the unblocking step. We supply the current SDS with every grade.
The isocyanate group is capped so the dispersion stays stable in the drum and in the bath. When the line reaches the unblocking temperature the cap comes off and the isocyanate crosslinks the film in place. That crosslink is what raises temperature and hydrolysis resistance above the non-reactive grades.
The film does not crosslink and you get the properties of an ordinary non-reactive dispersion. Four of the five grades unblock at 320 degrees F. If the line cannot reach that, specify FILCO 8813, which unblocks at 266 degrees F.
Match it to the service condition. Polyether resists hydrolysis, which is FILCO 75007, 7804 and 8813. Polyester gives the higher Tg here at 111 degrees F on FILCO 7799 but is the chemistry that hydrolyzes in sustained wet heat. Polycarbonate on FILCO 7704 sits between the two.
When the process reaches the unblocking temperature and you need the film to keep its properties above where a thermoplastic film would soften, or to survive sustained hydrolysis. If the process runs cool, specify a non-reactive grade.
Yes. Tell us the line temperature profile, the matrix polymer and the service conditions and we will send the current technical data sheet with the matching safety data sheet, and arrange sample material.
Yes. We send the Technical Data Sheet (TDS) and Safety Data Sheet (SDS) on request, in the manufacturer's current revision. Use Request TDS or SDS above and tell us what your qualification review needs.
The seven-grade non-reactive family, for processes that run cooler.
The anionic pair at 60 percent solids.
The other route to higher temperature resistance.
What a film former does in a sizing, and how the chemistries divide.
The selection logic, worked through on the carbon side.