Claims
- 1. A corrosion resistant composite material of a laminate comprising at least a combination of a layer of vinylidene fluoride resin, a layer of a graft copolymer and a layer of vinyl chloride resin,
- said composite material being obtained by coextruding said polyvinylidene fluoride, said polyvinyl chloride and said graft copolymer of melt index of 1.times.10.sup.2 to 1.times.10.sup.6 ps as determined in a Koka-type flow tester at 220.degree. C. under a load of 100 kg/cm.sup.2 containing 30 to 500 parts by weight of side chains consisting of homo- or copolymer of vinylidene fluoride to 100 parts by weight of homo- or copolymer of methyl methacrylate as a main backbone chain, said graft copolymer being inserted between said polyvinylidene fluoride and said polyvinyl chloride within the die for the coextrusion to be used as said adhesive layer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
53-161895 |
Dec 1978 |
JPX |
|
CROSS-REFERENCE TO RELATED APPLICATION
The present application is a continuation-in-part of application Ser. No. 104,397, filed Dec. 17, 1979, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1176631 |
Apr 1959 |
FRX |
1605078 |
Jan 1973 |
FRX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
104397 |
Dec 1979 |
|