Functionalized olefin polymers

• US 8,222,345 B2
• Filed: 02/13/2009
• Issued: 07/17/2012
• Est. Priority Date: 10/15/2002
• Status: Active Grant

• 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:
  US12/371,273
• Publication Number:
  US 20090149604A1
• Time in Patent Office: 1,250 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) a Dot T-Peel of 1 Newton or more on Kraft paper;
  • b) an Mw of 10,000 to 100,000; and
  • c) 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 (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; and where the C3 to C40 olefin polymer comprises at least 0.001 weight % of an functional group, preferably maleic anhydride. 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 a non-functionalized C3 to C40 olefin polymer comprising at least 50 mol % of one or more C3 to C40 olefins, and where the non-functionalized olefin polymer, has:

a) a Dot T-Peel of 1 Newton or more on Kraft paper;

b) an Mw of 10,000 to 100,000; and

c) 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 (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;

wherein the functionalized C3 to C40 olefin polymer has an Mw of 10,000 to 100,000 and comprises at least 0.001 weight % of a functional group.

2. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has:

a) a Dot T-Peel of 1 Newton or more on Kraft paper;

b) a branching index (g′

) of 0.98 or less measured at the Mz of the polymer;

c) a Mw of 10,000 to 60,000; and

d) a heat of fusion of 1 to 50 J/g.

3. The composition of claim 1, where the non-functionalized C3 to C40 olefin polymer is a homopolypropylene or a copolymer of propylene and up to 5 mole % ethylene having:

a) an isotactic run length of 1 to 30,

b) a percent of r dyad of greater than 20%, and

c) a heat of fusion of between 1 and 70 J/g.

4. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer comprises propylene and less than 15 mole % of ethylene.

5. 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.

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

C. or less.

7. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has an Mw of 10,000 to 50,000 and a branching index of 0.7 or less.

8. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has an Mw of 10,000 to 30,000 and a branching index of 0.98 or less.

9. The composition of claim 1, wherein the SEC graph of the C3 to C40 olefin polymer, prior to functionalization, is bi- or multi-modal.

10. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has an amorphous content of at least 50%.

11. The composition of claim 1, wherein the C3 to C40 olefin polymer, prior to functionalization, has

a) a peak melting point between 60 and 190°

C.;

b) a heat of fusion of 0 to 70 J/g; and

c) a melt viscosity of 8000 mPa·

sec or less at 190°

C.

12. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer, has:

a) a Tg of −

10°

C. or less;

b) a melt viscosity between 2000 and 6000 mPa·

sec at 190°

C.;

c) a molecular weight distribution (Mw/Mn) of at least 5; and

d) a bi- or multi-modal SEC graph of the polymer.

13. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has a crystallinity of at least 5%.

14. The composition of claim 1, wherein the non-functionalized C3 to C40 olefin polymer has 20 wt % or more of hexane room temperature soluble fraction and 50 wt % or less of Soxhlet heptane insolubles.

15. The composition of claim 1, wherein the functionalized C3 to C40 olefin polymer is functionalized with an unsaturated carboxylic acid, an ester of an unsaturated carboxylic acid, an acid anhydride, a di-ester, a salt of an unsaturated carboxylic acid, an unsaturated amide, an unsaturated imide, an aromatic vinyl compound, a hydrolyzable unsaturated silane compound, an unsaturated halogenated hydrocarbon, or a combination thereof.

16. The composition of claim 1, wherein the functionalized C3 to C40 olefin polymer is functionalized with one or more of maleic anhydride, citraconic anhydride, 2-methylmaleic anhydride, 2-chloromaleic anhydride, 2,3-dimethylmaleic anhydride, bicyclo[2.2.1]-5-heptene-2,3-dicarboxylic anhydride, 4-methyl-4-cyclohexene-1,2-dicarboxylic anhydride, acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid, crotonic acid, bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylic acid anhydride, 1,2,3,4,5,&

6, lo-octahydronaphthalene-2,3-dicarboxylic acid anhydride, 2 oxa-1,3-diketospiro[4.4]non-7-ene, bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid anhydride, maleopimaric acid, tetrahydrophthalic anhydride, norborn-5-ene-2,3-dicarboxylic acid anhydride, nadic anhydride, methyl nadic anhydride, himic anhydride, methylhimic anhydride, x methyl-bicyclo[2.2.]hept-5-ene-2,3-dicarboxylic acid anhydride (XMNA), methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, vinyltrichlorosilane, vinyltris(beta-methoxyethoxy)silane, vinyltriethoxysilane, vinyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, monovinylsilane, monoallylsilane, vinyl chloride, or vinylidene chloride.