That type 135 films are a spin-off of that 1977 Polaroid project of designing and marketing an amateur instant cine film system called Polavision.

All films were of that peel-apart system, all based on b&w Diffusion Transfer Reversal. The colour film was of the additive type with a regular filter array.

That Type 135 however was, to my understanding, aimed at professional users.
There were:
-) 2 panchromatic b&w films (one medium/one high-contrast)
-) 1 orthochromatic high-contrast blue-on-white film (for making text/graphic slides for lectures)
-) 2 colour films (one medium/one high-contrast)