Process for preparing tpu molding compositions

Details Process for preparing tpu molding compositions Process for preparing tpu molding compositions

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) C08G 18/08 (2006.01) C08L 55/02 (2006.01)

Patent

CA 2173687

A process for the continuous production of a thermoplastic molding composition containing a mixture of TPU and a (co)polymer is disclosed. The process comprises (a) introducing into an extruder under time and temperature conditions sufficient to bring about the formation of thermoplastic polyurethane a (co)polymer, and polyurethane-forming components comprising A) an organic diisocyanate, B) a linear polyol having terminal hydroxyl groups and a molecular weight of 500 to 5000, and C) a chain extender having a molecular weight of 60 to 500, and upon completing the formation of said polyurethane (b) discharging the resulting TPU/(co)polymer mixture from the extruder. Importantly, the (co)polymer contains a flow enhancer and the molar ratio of the NCO groups in A) to the groups which react with NCO in B) and C) is 0.9 to 1.2.

Affiliated with

Also associated with

Rating

Process for preparing tpu molding compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing tpu molding compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing tpu molding compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1536512