Polyurethane resin-based material for slush molding

Details Polyurethane resin-based material for slush molding Polyurethane resin-based material for slush molding

2008-07-29

2008-07-29

Zimmer, Marc S (Department: 1796)

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...

C524S121000, C524S136000, C524S140000, C524S145000, C524S268000, C524S287000, C524S290000, C524S292000, C524S306000, C524S308000, C528S044000, C528S076000, C528S085000

Reexamination Certificate

active

07405257

ABSTRACT:
The present invention provides a material for slush molding which is improved in melt properties during slush molding and is excellent in heat resistance, the material being made up of a thermoplastic polyurethane resin (A) the difference between the softening starting temperature (STi) and the softening ending temperature by TMA being from 0 to 30° C., and STi being 135 to 200° C. The resin (A) has a hard segment with an Mn of 200 to 2000 comprising a diisocyanate having a symmetrical structure, a low molecular-weight diamine having a symmetrical structure, and/or a low molecular-weight diol, the content of which being from 5 to 50 wt %, and a soft segment making up of a high molecular-weight diol with an Mn of 500 to 5000, with the aromatic content being 35 wt % or less and the aromatic ring content x and the urea group content y satisfyingin-line-formulae description="In-line Formulae" end="lead"?−0.1x+2.5≦y≦−0.1x+6.in-line-formulae description="In-line Formulae" end="tail"?

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