Claims
- 1. A crystalline random propylene copolymer composition comprising (i) a crystalline random propylene copolymer comprising 99 to 85 mole % of propylene and 1 to 15 mole % of an alpha-olefin other than propylene and (ii) a random 1-butene copolymer comprising ethylene and 1-butene, the weight ratio of the copolymer (i) to the copolymer (ii) being in the range of from 5:95 to 90:10, said random 1-butene copolymer (ii) satisfying the following conditions:
- (A) it comprises 1 to 50 mole % of the ethylene component and 50 to 99 mole % of the 1-butene component,
- (B) it has an intrinsic viscosity [.eta.], measured in decalin at 135.degree. C., of from 0.5 to 6 dl/g,
- (C) it has a melting point [Tm], measured by a differential scanning calorimeter, of from 30.degree. to 130.degree. C.,
- (D) it has a crystallinity, measured by X-ray diffractometry, of from 1 to 60%,
- (E) the amount [W.sub.1 in % by weight] of that portion of it which is soluble in boiling methyl acetate is not more than 2%, and
- (F) the amount [W.sub.2 in % by weight] of that portion of it which is soluble in a 1:1 by volume mixture of acetone and n-decane at 10.degree. C. is less than 5.times.[.eta.].sup.-1.2.
- 2. The composition of claim 1 wherein the 1-butene copolymer further has a stress at yield point (G), measured in accordance with JIS K-7113, of 10 to 200 kg/cm.sup.2.
- 3. The composition of claim 1 wherein the 1-butene copolymer further has a stress at break point (H), measured in accordance with JIS K-7113, of 3 to 1000 kg/cm.sup.2.
- 4. The composition of claim 1 wherein the 1-butene copolymer further has an elongation at break point (I), measured in accordance with JIS K-7113, of at least 300%.
- 5. The composition of claim 1 wherein the 1-butene copolymer further has a torsional rigidity (J), measured in accordance with JIS K-6745, of 5 to 3000 kg/cm.sup.2.
- 6. The composition of claim 1 wherein the 1-butene copolymer has a Young's modulus (K), measured in accordance with JIS K-7113, of 10 to 5000 kg/cm.sup.2.
- 7. The composition of claim 1 wherein the standard deviation (L) of the 1-butene content of the 1-butene copolymer is not more than 0.4a mole in which a represents the ethylene content of said copolymer.
- 8. The composition of claim 1 wherein the 1-butene copolymer is composed of 60 to 99 mole % of the 1-butene component and 1 to 40 mole % of the ethylene.
- 9. The composition of claim 1 wherein the weight ratio of the crystalline random propylene copolymer (i) to the 1-butene-type random copolymer (ii) is in the range of from 10:90 to 85:15.
- 10. A polypropylene composite laminate comprising a substrate layer of crystalline propylene and a layer of the crystalline random propylene copolymer composition of claim 1 laminated to at least one surface of said substrate layer.
- 11. The laminate of claim 10 wherein the substrate layer of crystalline polypropylene is in the non-stretched state.
- 12. The laminate of claim 10 wherein the layer of the crystalline random propylene copolymer is in the non-stretched state.
- 13. The laminate of claim 10 wherein the layer of the crystalline random propylene copolymer composition has a thickness of 0.1 to 50 microns.
- 14. The laminate of claim 10 wherein the crystalline polypropylene constituting the substrate layer is selected from crystalline homopolymer of propylene and crystalline propylene/alpha-olefin random copolymers.
- 15. The composition of claim 1 wherein the amount of that portion of the 1-butene-type copolymer (ii) which is soluble in a mixture of acetone and n-decane at 10.degree. C. is 0.1.times.[.eta.].sup.-1.2 to 5.times.[.eta.].sup.-1.2 % by weight.
- 16. The composition of claim 1 wherein the amount of that portion of the 1-butene-type copolymer (ii) which is soluble in a mixture of acetone and n-decane at 10.degree. C. is 0.2.times.[.eta.].sup.-1.2 to 4.5.times.[.eta.].sup.-1.2 % by weight.
- 17. The composition of claim 1 wherein the amount of that portion of the 1-butene-type copolymer (ii) which is soluble in a mixture of acetone and n-decane at 10.degree. C. is 0.3.times.[.eta.].sup.-1.2 to 4.times.[.eta.]% by weight.
- 18. The laminate of claim 10 wherein the amount of that portion of the 1-butene-type copolymer (ii) which is soluble in a mixture of acetone and n-decane at 10.degree. C. is 0.1.times.[.eta.].sup.-1.2 to 5.times.[.eta.].sup.-1.2 % by weight.
- 19. The laminate of claim 10 wherein the amount of that portion of the 1-butene-type copolymer (ii) which is soluble in a mixture of acetone and n-decane at 10.degree. C. is 0.2.times.[.eta.].sup.-1.2 to 4.5.times.[.eta.].sup.-1.2 % by weight.
- 20. The laminate of claim 10 wherein the amount of that portion of the 1-butene-type copolymer (ii) which is soluble in a mixture of acetone and n-decane at 10.degree. C. is 0.3.times.[.eta.].sup.-1.2 to 4.times.[.eta.].sup.-1.2 % by weight.
- 21. The composition of claim 1 wherein the crystalline random propylene copolymer (i) comprises 98 to 90 mole percent of propylene and 2 to 10 mole percent of the alpha-olefin other than propylene.
- 22. The composition of claim 21 wherein the alpha-olefin other than propylene is ethylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene or a mixture of at least two of these alpha-olefins.
- 23. The composition of claim 1 wherein the random 1-butene copolymer (ii) satisfies the following conditions:
- (A) it comprises 1 to 40 mole percent of ethylene and 60 to 99 mole percent of 1-butene,
- (B) it has an intrinsic viscosity (.eta.), measured in decalin at 135.degree. C., of 1.7 to 3.5 dl/g,
- (C) it has a melting point (Tm), measured by a differential scanning calorimeter, of from 120.degree. to 145.degree. C.,
- (D) it has a crystallinity, measured by X-ray diffractometry, of from 1 to 55%,
- (E) the amount (W.sub.1 in percent by weight) of that portion of it which is soluble in boiling methylacetate is from 0.02 to 1% by weight, and
- (F) the amount (W.sub.2 in percent by weight) is from 0.2.times.(.eta.).sup.-1.2 to 4.5.times.(.eta.).sup.-1.2.
- 24. The laminate of claim 10 wherein the the substrate layer of crystalline polypropylene is in the monoaxially or biaxially stretched state.
- 25. The laminate of claim 10 wherein the layer of the crystalline random propylene copolymer is in the monoaxially or biaxially stretched state.
- 26. The laminate of claim 10 wherein a layer of said crystalline random propylene copolymer is laminated to both surfaces of said substrate layer.
Priority Claims (2)
Number |
Date |
Country |
Kind |
59-230393 |
Nov 1984 |
JPX |
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59-230394 |
Nov 1984 |
JPX |
|
Parent Case Info
This application is a continuation, of application Ser. No. 792,670 filed Oct. 29, 1985, now abandoned.
US Referenced Citations (20)
Foreign Referenced Citations (5)
Number |
Date |
Country |
0135358 |
Mar 1985 |
EPX |
58-032611 |
Aug 1981 |
JPX |
1582186 |
Dec 1980 |
GBX |
2055688 |
Mar 1981 |
GBX |
2111066 |
Jun 1983 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
792670 |
Oct 1985 |
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