Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-04-25
1985-04-09
Lieberman, Allan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 74, C08L 3500, C08L 5106
Patent
active
045102864
ABSTRACT:
Disclosed is a bonding resin composition composed of a blend consisting essentially of (a) maleic anhydride-modified, stereoregular polypropylene having a combined maleic anhydride content of about 0.5-0.8% by weight of said modified polypropylene, and (b) base polymer material at about 25 parts by weight per part by weight of said maleic anhydride-modified polypropylene. The base polymer material is selected from a group of two combinations.
One combination consists essentially of stereoregular polypropylene and essentially crystalline, sequentially polymerized propylene-ethylene product having a combined ethylene content of about 25% by weight of the product. The weight ratio of the polypropylene to the product is about 1:3-3:1.
The other combination consists essentially of essentially crystalline, sequentially polymerized propylene-ethylene product having a combined ethylene content of about 7% by weight of the product, and essentially crystalline, sequentially polymerized propylene-ethylene product having a combined ethylene content of about 25% by weight of the product. The weight ratio of the two products is about 1:3-3:1.
Also disclosed is a laminate of the bonding resin composition and a metal such as steel or aluminum. Further disclosed is a method for making the laminate.
REFERENCES:
patent: 3483276 (1969-12-01), Mahlman
patent: 3804919 (1974-04-01), Schrage et al.
patent: 4409364 (1983-10-01), Schmuckler et al.
patent: 4423117 (1983-12-01), Machonis, Jr. et al.
Alexander William S.
Hercules Incorporated
Lieberman Allan M.
Lovercheck Dale R.
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