I did not see this post when it went up over a month ago. I was in Montana at the Formulary.
I can say that Kodak did develop some products for Polaroid, because even though Land was a genius at inventing, his engineers did not have production coating machines nor did they have emulsion formulas and so Kodak developed a series of products for him including some B&W and color products. I do not know which ones.
The pod contains either KOH or NaOH as alkali along with restrainer and carboxymethyl cellulose (Unflavored Citrucel to US people ). There are also some developers and silver halide solvents. The film sheet is a film sheet but the reciever sheet is a special thing which forms the positive print. The whole thing is like a monobath.
In addition, the package contains rails to keep the distribution of pod goo even over the width and length of film, and the pod has dividers to promote even spread and burst when pressure is applied.
Filling a pod is a very exact and complex process and assmbling a pack is very expensive with some rather complex equipment involved.
Hope this helps.