Process for the production of thermoplastic polyurethane...

Details Process for the production of thermoplastic polyurethane... Process for the production of thermoplastic polyurethane...

C - Chemistry, Metallurgy

08

L

400/3070

C08L 75/04 (2006.01) C08G 18/66 (2006.01) C08G 18/76 (2006.01) C08L 75/08 (2006.01)

Patent

CA 1231488

A PROCESS FOR THE PRODUCTION OF THERMOPLASTIC POLYURETHANE ELASTOMERS ABSTRACT OF THE DISCLOSURE Thermoplastic polyurethane elastomers which are flexible at low temperatures, have high mechanical strength, a density of from 1.10 to 1.17 Mg/m3 and a Shore-D hardness of from 55 to 80 are produced by reacting: a) 4,4'-diisocyanatodiphenylmethane or an isomer mixture thereof with b) a polytetramethylene ether diol having a molecular weight of from 800 to 3,000 in the presence of c) a mixture of diol chain extenders, d) a graft rubber polymer and optionally e) an antioxidant and/or UV-absorber/light stabilizer. The molar ratio of a) to b) is between 6:1 and 50:1. The mixture of diol chain extenders is made up of (1) 1,4-butane diol or 1,6-hexane diol and (2) a diol different from (1) having a molecular weight of from 62 to 399. The molar ratio of diol (1) to diol (2) is from 97:3 to 72:28. These elastomers are particularly useful in the production of automobile and ski boot components.

473527

Affiliated with

Also associated with

Rating

Process for the production of thermoplastic polyurethane... 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 the production of thermoplastic polyurethane..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of thermoplastic polyurethane... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1268314