Ethylene-based polymers and processes for the same

• US 10,442,878 B2
• Filed: 03/08/2013
• Issued: 10/15/2019
• Est. Priority Date: 06/27/2012
• Status: Active Grant

• Current Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Original Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Inventors: Osby, John O.
• Primary Examiner(s): Rabago, Roberto
• Application Number:
  US14/411,445
• Publication Number:
  US 20150197590A1
• Time in Patent Office: 2,412 Days
• CPC Class Codes: C08F 10/02 Ethene
• CPC Class Codes: C08F 2/00 Processes of polymerisation
• CPC Class Codes: C08F 2/38 Polymerisation using regulators, e.g. chain terminating agents , e.g. telomerisation
• CPC Class Codes: C08F 210/02 Ethene
• 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 220/40 Esters of unsaturated alcohols , e.g. allyl (meth)acrylate
• CPC Class Codes: C08F 222/102 of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
• CPC Class Codes: C08F 236/20 unconjugated
• CPC Class Codes: C08F 2500/08 Low density, i.e. < 0.91 g/cm3
• CPC Class Codes: C08F 2500/11 Melt tension or melt strength
• CPC Class Codes: C08F 2500/12 Melt flow index or melt flow ratio
• CPC Class Codes: C08F 4/38 Mixtures of peroxy-compounds
• CPC Class Codes: C08L 23/08 Copolymers of ethene C08L23/16 takes precedence
• CPC Class Codes: C08L 23/0869 Acids or derivatives thereof

Abstract

The invention provides an ethylene-based polymer formed from reacting at least the following: ethylene and at least one asymmetrical polyene, comprising an “alpha, beta unsaturated end” and a “C—C double bond end,” and wherein the reaction takes place in the presence of at least one free-radical initiator.

Claims

1. An ethylene-based polymer formed from reacting at least the following:

ethylene and at least one asymmetrical polyene, comprising an “

alpha, beta unsaturated end” and

a “

C—

C double bond end,” and

wherein the reaction takes place in the presence of at least one free-radical initiator;

wherein the ethylene-based polymer comprises ethylene and at least one asymmetrical polyene as the only monomeric units; and

wherein the ethylene-based polymer comprises, in reacted form, less than, or equal to, 10 moles asymmetrical polyene per 1000 moles of ethylene-based polymer back bone carbons, based on the weight of the polymer; and

the polymer comprises structure A;

2. The ethylene-based polymer of claim 1, wherein, in the reaction, the asymmetrical polyene is present in an amount greater than, or equal to, 100 ppm, based on the total amount of ethylene.

3. The ethylene-based polymer of claim 1, wherein the ethylene-based polymer is a low density polyethylene (LDPE).

4. A composition comprising the ethylene-based polymer of any of claim 1.

5. The composition of claim 4, further comprising at least one other polymer.

6. An article comprising at least one component formed from the composition of claim 4.

7. A process to form the ethylene-based polymer of claim 1, said process comprising polymerizing ethylene in the presence of the asymmetrical polyene.

8. The process of claim 7, wherein the polymerization takes place in a reactor configuration comprising at least one tubular reactor.

9. An ethylene-based polymer having the structure A:

11. The ethylene-based polymer of claim 9 wherein the ethylene-based polymer is a low density polyethylene.

10. An ethylene-based polymer having the structure A: