Functionalized olefin polymers

• US 8,653,199 B2
• Filed: 06/15/2012
• Issued: 02/18/2014
• Est. Priority Date: 10/15/2002
• Status: Expired due to Term

• Current Assignee: ExxonMobil Chemical Patents Inc. (Exxon Mobil Corporation)
• Original Assignee: ExxonMobil Chemical Patents Inc. (Exxon Mobil Corporation)
• Inventors: Abhari, Ramin, Sims, Charles Lewis, Tse, Mun Fu, Brant, Patrick, Jiang, Peijun, Johnsrud, David Raymond
• Primary Examiner(s): Lee, Rip A.
• Application Number:
  US13/524,288
• Publication Number:
  US 20130150531A1
• Time in Patent Office: 613 Days
• Field of Search: 525/240, 525/416, 525/70, 525/386
• US Class Current: 525/240
• CPC Class Codes: C08F 10/06 Propene
• CPC Class Codes: C08F 110/06 Propene
• CPC Class Codes: C08F 210/06 Propene
• CPC Class Codes: C08F 210/16 Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• CPC Class Codes: C08F 2500/09 Long chain branches
• CPC Class Codes: C08F 2500/20 Activation energy or enthalpy
• CPC Class Codes: C08L 23/12 Polypropene
• CPC Class Codes: C08L 23/16 Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
• CPC Class Codes: C08L 23/26 modified by chemical after-treatment
• CPC Class Codes: C08L 2314/06 Metallocene or single site catalysts
• CPC Class Codes: C08L 2666/24 Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
• CPC Class Codes: C08L 51/06 grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond

Abstract

This invention relates to a composition comprising a functionalized C3 to C40 olefin polymer comprising at least 50 mol % of one or more C3 to C40 olefins, and where the olefin polymer, prior to functionalization, has:

• • a Dot T-Peel of 1 Newton or more on Kraft paper;
  • an Mw of 10,000 to 100,000; and
  • a branching index (g′) of 0.98 or less measured at the Mz of the polymer
  • when the polymer has an Mw of 10,000 to 60,000, or
  • a branching index of 0.95 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000; and where the C3 to C40 olefin polymer comprises at least 0.001 wt % of a functional group. This invention further relates to blends of such functionalized polymers with other polymers including non-functionalized C3 to C40 olefin polymers as described above.

Claims

1. A composition comprising a functionalized C3 to C40 olefin polymer;

and an additional non-functionalized polymer comprising at least 70% propylene;

wherein the additional non-functionalized polymer has at least two molecular weight fractions present at greater than 20 weight % each based upon the weight of the polymer as measured by Gel Permeation Chromatography; and

wherein the non-functionalized polymer has a Dot T-Peel of 1 Newton or more on Kraft paper and a Mw of 10,000 to 100,000.

2. The composition of claim 1, wherein the functionalized C3 to C40 olefin polymer is present in the composition in the range of 2 to 20 weight %.

3. The composition of claim 1, wherein the functionalized C3 to C40 olefin comprises at least 0.0001 weight % of a functional group.

4. The composition of claim 3, wherein the functional group is maleic anhydride.

5. The composition of claim 1, wherein the functionalized C3 to C40 olefin polymer has a Mw of 10,000 to 100,000.

6. The composition of claim 1, wherein the non-functionalized polymer has a heat of fusion between 20 and 50 J/g.

7. The composition of claim 1, wherein the non-functionalized polymer comprises at least 80% propylene.

8. The composition of claim 1, wherein the non-functionalized polymer comprises a branching index (g′

) of 0.98 or less measured at the Mz of the polymer when the polymer has a Mw of 10,000 to 60,000, or a branching index (g′

) of 0.95 or less measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000.

9. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has a melt viscosity of 7000 mPa·

sec or less at 190°

C.

10. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has a Tg of 0°

C. or less.

11. The composition of claim 1, wherein the non-functionalized polymer comprises 5 mole % ethylene or less.