Polyester multilayer sheet having excellent impact strength and

Details Polyester multilayer sheet having excellent impact strength and Polyester multilayer sheet having excellent impact strength and

1998-01-20

1999-09-07

Michl, Paul R.

Stock material or miscellaneous articles

Composite

Of polyester

B32B 2706

Patent

active

059485442

ABSTRACT:
The present invention relates to a polyester multilayer sheet having excellent impact strength and weatherability, and relates to a process for preparing the same.
The present invention relates to coextrude more than 2 kinds of copolyester resins, composed of 5-99 mol % of ethyleneterephthalate and 1-95 mol % of ethylenenaphthalate or ethyleneisophthalate, having at least 0.005 dl/g of inherent viscosity difference each others, on 3-7 layers of multilayer sheet which had been arrayed by turns with high viscosity resin and low viscosity resin, and its outer layer has the higher inherent viscosity than the inner layer.
Polyester multilayer sheet of the present invention is suitable for window glass substitute of building, transparent agricultural intercepting material and clothing material.

REFERENCES:
patent: 5061565 (1991-10-01), Aoki
patent: 5392986 (1995-02-01), Beer
patent: 5458965 (1995-10-01), Yoshinaka
patent: 5753377 (1998-05-01), Takahashi

Affiliated with

Also associated with

Rating

Polyester multilayer sheet having excellent impact strength and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyester multilayer sheet having excellent impact strength and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyester multilayer sheet having excellent impact strength and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1803069