Claims
- 1. A homogeneous binary blend of an ethylene polymer and an ethylene/acrylic acid interpolymer, wherein the blend consists of between 80% to about 99% of the ethylene/acrylic acid interpolymer, the remainder being said ethylene polymer,
- said ethylene polymer being characterized as a linear low density ethylene interpolymer, prepared using a coordination catalyst acting as a polymerization initiator in the interpolymerization of ethylene with at least one alpha-olefin comonomer having from 3 to about 12 carbon atoms in each comonomer unit, the amount of said comonomer being an amount sufficient to constitute about 3% to about 20% by weight of the interpolymer and also sufficient to impart a low density in the range of about 0.90 up to about 0.94 gms/cc to the interpolymer, said interpolymer being further characterized as having a melt flow value of from about 0.1 gm/10 min. as measured by ASTM D-1238 (Condition E) to about 50 gm/10 min. as measured by ASTM D-1238 (Condition D),
- said ethylene/acrylic acid interpolymer being characterized as a random interpolymer prepared at high pressure by the action of a free-radical polymerization initiator, acting on a mixture of ethylene monomer and acrylic acid monomer, said random interpolymer being further characterized as containing about 0.5 to about 50 weight percent of the acrylic acid moiety, the remainder being the ethylene moiety, a density in the range of about 0.91 to about 1.3 gms/cc, and a melt flow value of from about 150 gm/10 min. as measured by ASTM D-1238 (Condition B) to about 0.1 gm/10 min. as measured by ASTM D-1238 (Condition E).
- 2. The blend of claim 1 wherein the alpha-olefin comonomer in the linear low density ethylene interpolymer comprises at least one alkene of from about 4 to about 8 carbon atoms per molecule.
- 3. The blend of claim 1 wherein the alpha-olefin comonomer in the linear low density ethylene interpolymer comprises 1-octene.
- 4. The blend of claim 1 wherein the linear low density ethylene interpolymer contains about 3% to about 12% by weight of the alpha-olefin comonomer moieties.
- 5. The blend of claim 1 wherein the linear low density ethylene interpolymer has a melt flow value in the range of about 0.3 to about 20 gms/10 min. as measured by ASTM D-1238 (E).
- 6. The blend of claim 1 wherein the linear low density ethylene interpolymer has a density in the range of about 0.92 to about 0.93 g/cc.
- 7. The blend of claim 1 wherein the linear low density ethylene interpolymer comprises about 5 to less than 20% by weight of the total blend.
- 8. The blend of claim 1 wherein the linear low density ethylene interpolymer comprises about 10 to less than 20% by weight of the total blend.
- 9. The blend of claim 1 wherein the ethylene/acrylic acid interpolymer comprises about 0.5 to about 15% by weight of the acrylic acid moieties.
- 10. The blend of claim 1 wherein the ethylene/acrylic acid interpolymer comprises about 6 to about 15% by weight of the acrylic acid moieties.
- 11. The blend of claim 1 wherein the ethylene/acrylic acid interpolymer has a melt flow value in the range of about 1 to about 15 gms/10 min. as measured by ASTM D-1238 (E).
- 12. A homogeneous binary blend of linear low density ethylene interpolymer and an ethylene/acrylic acid interpolymer,
- said linear low density ethylene interpolymer comprising about 5 to less than 20% by weight of the blend and being characterized as being an interpolymer of ethylene and about 3 to about 12% by wt. of an alkene of about 4 to about 8 carbon atoms, further characterized as having a melt flow value in the range of about 0.3 to about 20 gms/10 min. in accordance with ASTM D-1238 (E) and a density in the range of about 0.90 to about 0.94 gms/cc,
- said ethylene/acrylic acid interpolymer being characterized as having about 0.5 to about 15% by weight of acrylic acid moieties, the remainder being ethylene moieties, a melt flow value in the range of about 1 to about 15 gms/10 min. according to ASTM D-1238 (E) and a density in the range of about 0.92-0.96 gms/cc.
- 13. The blend of claim 12 wherein the linear low density ethylene interpolymer contains about 10 to less than 20% by weight of the blend.
- 14. The blend of claim 12 wherein the alpha-olefin alkene comprises 1-octene.
- 15. The blend of claim 12 wherein the ethylene/acrylic acid interpolymer contains about 6 to about 15% of acrylic acid moieties.
- 16. The blend of claim 12 wherein the linear low density ethylene interpolymer comprises an ethylene/1-octene interpolymer having a density in the range of about 0.92 to about 0.93 gms/cc. and a melt flow value in the range of about 0.3 to about 20 gms/10 min. according to ASTM D-1238 (E),
- and the ethylene/acrylic acid interpolymer comprises one having about 6% to about 15% acrylic acid moieties, having a density in the range of about 0.92 to about 0.96 gms/cc., and having a melt flow value in the range of about 1 to about 15 gms/10 min. according to ASTM D-1238 (E),
- wherein the linear low density ethylene interpolymer comprises about 10 to less than 20% by weight of the total polymer blend.
- 17. A method for improving the film properties of an ethylene/acrylic acid interpolymer, said method comprising
- homogeneously blending with said ethylene/acrylic acid interpolymer an amount of linear low density ethylene interpolymer, the said amount comprising from about 1% to less than 20% of the total weight of the blend,
- said ethylene/acrylic acid interpolymer being characterized as one containing about 0.5 to about 50% by weight of acrylic acid moieties, the remainder being ethylene moieties, having a density in the range of about 0.91 to about 1.3 gms/cc., and a melt flow value in the range of about 0.1 gms/10 min. according to ASTM D-1238 (E) to about 150 gms/10 min. according to ASTM D-1238 (B),
- said linear low density ethylene interpolymer being characterized as having about 3 to about 20% by weight of alkylene moieties of 3 to 12 carbon atoms, a density in the range of about 0.90 to about 0.94 gms/cc., and a melt flow value in the range of about 0.1 gms/10 min. according to ASTM D-1238 (E) to about 50 gms/10 min. according to ASTM D-1238 (D).
- 18. The method of claim 17 wherein the amount of linear low density ethylene interpolymer is in the range of about 5% to less than 20% of the total weight of the blend.
- 19. The method of claim 17 wherein the ethylene/acrylic acid interpolymer contains about 0.5 to about 15% weight of acrylic acid moieties.
- 20. The method of claim 17 wherein the linear low density ethylene interpolymer contains about 3 to about 12% by weight of alkylene monomer moieties, wherein the alkylene monomer has from about 4 to about 8 carbon atoms.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation of application Ser. No. 567,721, filed Jan. 3, 1982, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2019412 |
Oct 1979 |
GBX |
Continuations (1)
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Number |
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567721 |
Jan 1984 |
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