Nova Patents
EP1539870B1

Plasticized polyolefin compositions

Abstract

This record has no abstract on file.

EP1539870B1, drawing sheet 1
Sheet 1 of 19

Term

Term ended

Expired 12 August 2023, 3.1 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

51 claims: 45 independent, 6 dependent

  1. 1
    A plasticized polyolefin composition comprising from 60 to 99 weight % of polypropylene and from 1 to 40 weight % of one or more non-functionalized plasticizers where the non-functionalized plasticizer comprises oligomers of C 5 to C 14 olefins having a Kinematic viscosity of 10 cSt or more at 100 °C and a viscosity index of 120 or more.
  2. 4
    Composition according to any of claims 1 to 3 in which the non-functionalized plasticizer comprises oligomers of 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undodecene and or 1-dodecene.
  3. 5
    Composition according to any of claims 1 to 4 in which the non-functionalized plasticizer comprises oligomers of decene having a carbon number of 200 to 1500.
  4. 6
    Composition according to any of claims 1 to 5 in which the non-functionalized plasticizer has a kinematic viscosity of 10 cSt at 100 °C.
  5. 7
    Composition according to any of claims 1 to 6 in which the non-functionalized plasticizer has a VI of 130 or more.
  6. 8
    Composition according to any of the preceding claims in which the plasticized composition decreases less than 1 % in weight when stored at 70 °C for 312 hours in a dry oven.
  7. 9
    Composition according to any of the preceding claims in which the non-functionalized plasticizer comprises 0.1 weight % or less of functional groups selected from hydroxide, aryls and substituted aryls, halogens, alkoxys, carboxylates, esters, carbon unsaturation, acrylates, oxygen, nitrogen, and carboxyl, based upon the weight of the NFP.
  8. 10
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a glass transition temperature (Tg) that cannot be determined or if it can be determined then the Tg is less than 30°C.
  9. 11
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a distillation range having a difference between the upper temperature and the lower temperature of 20 °C or less.
  10. 12
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has an initial boiling point greater than 110 °C.
  11. 13
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a pour point of-15 °C or less.
  12. 14
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a specific gravity of less than 0.86 and preferably from 0.70 to 0.86.
  13. 15
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a final boiling point of from 115°C to 500°C.
  14. 16
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a weight average molecular weight between 2,000 and 100 g/mol.
  15. 17
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a flash point of -30 to 350°C.
  16. 18
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a dielectric constant at 20°C of less than 3.0.
  17. 19
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a density of from 0.70 to 0.83 g/cm 3 .
  18. 20
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a viscosity of from 0.5 to 20 cSt at 25°C.
  19. 21
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a carbon number of from 6 to 150 and preferably from 7 to 100.
  20. 22
    Composition according to any of the preceding claims in which the non-functionalized plasticizer has a carbon number of from 10 to 30 and preferably from 12 to 25.
  21. 23
    Composition according to any of the preceding claims in which the plasticized composition has a single glass transition temperature that is below that of the polyolefin itself.
  22. 24
    Composition according to any of the preceding claims in which the T g of the plasticized composition is at least 4 °C lower than that of the neat polypropylene and preferably is at least 10 °C lower than that of the neat polypropylene and more preferably is at least 15 °C lower than that of the neat polypropylene.
  23. 25
    Composition according to any of claims 16, 17 or 18 in which the peak melting temperature of the neat polypropylene is within 1 to 4°C of the plasticized polypropylene.
  24. 26
    Composition according to any of claims 16, 17, 18 or 19 in which the crystallization temperature of the neat polypropylene is within 1 to 4°C of the plasticized polypropylene.
  25. 27
    Composition according to any of the preceding claims in which the polypropylene comprises isotactic polypropylene.
  26. 28
    Composition according to any of the preceding claims in which the polypropylene comprises syndiotactic polypropylene.
  27. 29
    Composition according to any of the preceding claims in which the polypropylene comprises highly isotactic polypropylene, isotactic polypropylene or an impact copolymer.
  28. 30
    Composition according to any of the preceding claims in which the polypropylene further comprises an elastomer or a plastomer.
  29. 31
    Composition according to any of the preceding claims in which the polypropylene has an Mw of 30,000 to 1,000,000 g/mol.
  30. 32
    Composition according to any of the preceding claims in which the polypropylene has an Mw/Mn of 1.6 to 10.
  31. 33
    Composition according to any of the preceding claims in which the polypropylene has a melting point (second melt) of 30 to 185 °C.
  32. 34
    Composition according to any of the preceding claims in which the polypropylene has a crystallinity of 5 to 80%.
  33. 35
    Composition according to any of the preceding claims in which the polypropylene has a heat of fusion between 20 to 150 J/g.
  34. 36
    Composition according to any of the preceding claims in which the polypropylene has a Gardner impact strength, tested on 0.125 inch disk at 23°C of 20 in-lb to 1000 in-lb.
  35. 37
    Composition according to any of the preceding claims in which the polypropylene has a 1% secant flexural modulus of from 100 MPa to 2300 MPa
  36. 38
    Composition according to any of the preceding claims in which the polypropylene has a melt flow rate from 0.3 to 500 dg/min.
  37. 39
    Composition according to any of the preceding claims in which the polypropylene comprises a copolymer of propylene and from 0.5 to 30 weight % of one or more comonomers selected from the group consisting of ethylene, butene, pentene, hexene, heptene, octene, nonene, decene, dodecene, 4-methylpentene-1, 3-methyl pcntene-1, 5-ethyl-1-nonene, and 3,5,5-trimethyl-hexene-1.
  38. 40
    Composition according to any of the preceding claims in which the polypropylene comprises propylene, from 0 to 5 weight % of a diene, and from 2 wt% to 25 wt% ethylene, based on the total weight of the polymer and has a narrow compositional distribution;a melting point (Tm) of from 25°C to 120°C;a heat of fusion of from 50 J/g to 3 J/g;an Mw/Mn of from 1.5 to 5;and a melt index (MI) of less than 20 dg/min.
  39. 42
    Composition according to any of the preceding claims in which non-functionalized plasticizer is present at 1 to 35 weight %, based upon the weight of the polypropylene and the non-functionalized plasticizer and preferably present at 1 to 15 weight %, based upon the weight of the polypropylene and the non-functionalized plasticizer.
  40. 43
    Composition according to any of the preceding claims in which the polypropylene is a propylene impact copolymer or blend comprising from 40% to 95% by weight of a Component A and from 5% to 60% by weight of a Component B based on the total weight of copolymer;wherein Component A comprises propylene homopolymer or copolymer, the copolymer comprising 10% or less by weight ethylene, butene, hexene or octene comonomer;and wherein Component B comprises propylene copolymer, wherein the copolymer comprises from 5% to 70% by weight ethylene, butene, hexene and/or octene comonomer, and from 95% to 30% by weight propylene.
  41. 45
    Composition according to any of the preceding claims in which polyethylene having a weight average molecular weight of from 500 to 10,000 is substantially absent and or wherein phthalates, adipates, trimellitate esters, and polyesters are substantially absent.
  42. 46
    Composition according to any of the preceding claims in which the polypropylene comprises segments that are isotactic.
  43. 47
    An article of manufacture comprising the composition according to any of the above claims.
  44. 50
    A method to make an article of manufacture comprising subjecting the composition of any of claims 1 to 46 one or more of:injection molding, compression molding, transfer molding, casting, extruding, thermoforming, blow molding, spunbonding, laminating, pultrusion, fiber spinning, draw reduction, rotational molding, spinbonding, melt spinning, melt blowing;or combinations thereof or which comprises making a non-woven article by a process comprising melt blowing, spunbonding, film aperturing, and or staple fiber carding the composition, or which comprises making a non-woven fabric by a process comprising extruding of fibers comprising the composition through a spinneret, drawing the fibers using high velocity air, laying the drawn fibers on an endless belt to form a web, and bonding the fibers to one another.
  45. 51
    A method to make the plasticized polyolefin composition of any of claims 1 to 46 comprising polymerizing the polypropylene in a solution process and introducing a non-functional plasticizer that is soluble in the solvent medium into the polymer solution prior to removing the solvent.
Independent claims45