Thermoplastic polyurethane elastomer based on a hydroxyl termina

Details Thermoplastic polyurethane elastomer based on a hydroxyl termina Thermoplastic polyurethane elastomer based on a hydroxyl termina

1995-07-13

1997-02-04

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

523217, 523220, 524430, 524442, 524493, 524494, 524444, 524847, 528 65, 528 66, 528 59, 528 74, 4282974, C08J 300, C08K 320, C08L 7500

Patent

active

055998747

ABSTRACT:
A thermoplastic polyurethane elastomeric seal composition comprising, by weight, about 90% to 99% thermoplastic polyurethane elastomer and about 1% to 10% fibers. Also, the thermoplastic polyurethane elastomer is derived from the reactants comprising: (i) a mixture of polyol and an aromatic chain extender in a molar ratio in the range of from about 40:60 to about 60:40 of butanediol glycol adipate to hydroquinone bis 2-hydroxyethyl ether, and (ii) 1,5 naphthalene diisocyanate present in a molar ratio in the range of about 50:50 to about 54.5:45.5 of 1,5 naphthalene diisocyanate to the said first mixture of polyol and an aromatic chain extender. After curing, the thermoplastic polyurethane elastomeric seal compound has outstanding wear resistance and low compression set.
This thermoplastic polyurethane elastomeric seal compound is particularly useful in making shaft seals subject to high wear and high pressure, for use in hydraulic rams in earthmoving equipment.

REFERENCES:
patent: H812 (1990-08-01), George
patent: 4254010 (1981-03-01), Minzuno et al.
patent: 4738622 (1988-04-01), Kawahara et al.
patent: 4822827 (1989-04-01), Bonk et al.
"Preparation And Properties Of High Performance, Liquid Cast Urethane Elastomers Extended With Hydroquinon Di(B-Hydroxyethyl) Ether)", M. Palmer et al. (Presented at a Meeting of The Polyurethane Manufacturers Assoc., Chicago, IL, Apr. 17-20, 1977.

Affiliated with

Also associated with

Rating

Thermoplastic polyurethane elastomer based on a hydroxyl termina does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermoplastic polyurethane elastomer based on a hydroxyl termina, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoplastic polyurethane elastomer based on a hydroxyl termina will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-679400