Claims
- 1. polyolefin blend composition with outstanding adhesion characteristics, said blend having an MFR, when substantially C.sub.3 based, or MI, when substantially C.sub.2 based, of 1 to 1,000, which blend composition after blending has been extruder grafted with from 0.1 to 50 wt. percent of a monomer, wherein said monomer is selected from the group consisting of:
- a. a C.sub.3 to C.sub.10 unsaturated monocarboxylic acid;
- b. unsaturated polycarboxylic acids;
- c. melt salt and glycidyl derivatives of the foregoing;
- d. mixtures of the foregoing;
- and whereby said polyolefin comprises 60 to 40 wt. percent of an elastomer selected from the group consisting of:
- i. ethylene/propylene copolymer elastomers;
- ii. ethylene/propylene diene monomer copolymer elastomers;
- iii. polyisobutylene elastomers;
- iv. butyl rubber elastomers;
- v. chlorobutyl elastomers;
- vi. combinations of the foregoing; and 40 to 60 wt. percent of a C.sub.2 to C.sub.3 polyolefin plastic.
- 2. The composition of claim 1 wherein said plastic is polypropylene.
- 3. The composition of claim 1 wherein said plastic is polyethylene.
- 4. The composition of claim 1 wherein said elastomer is an ethylene/propylene copolymer or an ethylene/propylene diene monomer copolymer and said plastic is polypropylene.
- 5. A composition according to claim 1 wherein said MFR or MI is from 10 to 300.
- 6. A composition according to claim 1 wherein said plastic is polypropylene and said MFR is at least 25 percent higher than said polyolefin blend composition after grafting.
- 7. A composition according to claim 1 wherein said monomer is acrylic acid.
- 8. A composition according to claim 1, wherein said monomer is glycidyl acrylate.
- 9. A composition according to claim 4, wherein said monomer is acrylic acid.
- 10. A composition according to claim 4, wherein said monomer is glycidyl acrylate.
Parent Case Info
This is a division, of application Ser. No. 240,502, filed 4/3/72 now U.S. Pat. No. 3,868,433.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3658948 |
McConnell |
Apr 1972 |
|
3696069 |
Schrage et al. |
Oct 1972 |
|
3868433 |
Bartz et al. |
Feb 1975 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
240502 |
Apr 1972 |
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