Weatherable coextruded flexible films and laminated structure

Patent 4680234 Issued on July 14, 1987. Estimated Expiration Date:

May 13, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3006889

3165560

3291863

3299182

3579416

3705067

3819554

3845166

3904579

Thermoplastic composition comprising PVC and chlorinated polyethylene
Patent #: 3940456
Issued on: 02/24/1976
Inventor: Frey , et al.

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Inventor

Kelch, Robert H.

Application

No. 06/732981 filed on 05/13/1985

US Classes:

428/461, Next to addition polymer from unsaturated monomers156/244.24, Post-treatment264/176.1, Shaping by extrusion428/324, Mica428/325, Glass or ceramic (i.e., fired or glazed clay, cement, etc.) (porcelain, quartz, etc.)428/328, Heavy metal or aluminum or compound thereof428/463, Ester, halide or nitrile of addition polymer428/512, Addition polymer of hydrocarbon(s) only428/514, Ester, halide or nitrile of addition polymer428/518, Next to vinyl or vinylidene chloride polymer428/520, Ester, halide or nitrile of addition polymer428/908.8WEAR-RESISTANT LAYER

Examiners

Primary: Ives, P. C.

Attorney, Agent or Firm

Deline; Douglas N.

International Classes

C09J 127/00 (20060101)
C09J 127/06 (20060101)
C09J 7/02 (20060101)
C09J 123/08 (20060101)
C09J 123/00 (20060101)
B32B 27/30 (20060101)
C08L 23/00 (20060101)
C08L 23/28 (20060101)

Abstract

A flexible weather resistant film comprising a weather resistant layer of a blend of a vinyl chloride polymer and chlorinated polyethylene and a second layer comprising a normally solid thermoplastic adhesive. Improved performance is obtained when the first layer additionally comprises an interpolymer of ethylene and at least one carboxylic acid or ester thereof containing ethylenic unsaturation.