Global patent index - EP 0968235 A1

EP 0968235 A1 2000-01-05 - GRAFTED ETHYLENE COPOLYMERS

Title (en)

GRAFTED ETHYLENE COPOLYMERS

Title (de)

GEPFROPFTE ETHYLENCOPOLYMERE

Title (fr)

COPOLYMERES D'ETHYLENE GREFFES

Publication

EP 0968235 A1 (EN)

Application

EP 98911905 A

Priority

  • US 9805552 W
  • US 82183897 A

Abstract (en)

[origin: WO9842760A1] This invention relates to a grafted ethylene copolymer comprising ethylene and an alpha-olefin grafted with 0.1 weight % or more of an unsaturated acid or anhydride wherein the copolymer prior to grafting is characterized by: 1) a vinylidene to vinyl end chain unsaturation ratio of 3 or less, and 2) a CDBI of 60 % or more or was produced using one or more mono- or bis- cyclopentadienyl transition metal catalysts in combination with an activator of alumoxane and/or a non-coordinating anion, and the grafted copolymer is characterized by a number of unsaturated acid or anhydride molecules per chain of 2 or more as calculated according to the following formula: [Mn<*> UAA(wt%)]/[UAA(Mw)] wherein Mn is the number average molecular weight as measured by GPC, UAA(wt.%) is the weight percent of the unsaturated acid or anhydride as measured by FTIR spectroscopy and UAA(Mw) is the molecular weight of the unsaturated acid or anhydride.

IPC 1-7 (main, further and additional classification)

C08F 255/02; C08F 290/04

IPC 8 full level (invention and additional information)

C08F 255/00 (2006.01); C08F 8/46 (2006.01); C08F 255/02 (2006.01); C08F 290/04 (2006.01); C08L 51/06 (2006.01)

CPC (invention and additional information)

C08F 290/042 (2013.01); C08F 255/02 (2013.01); C08L 51/06 (2013.01)

Combination set (CPC)

  1. C08F 255/02 + C08F 220/02
  2. C08F 255/02 + C08F 222/02
  3. C08L 51/06 + C08L 2666/02

Citation (search report)

See references of WO 9842760A1

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

WO 9842760 A1 19981001; AU 6575398 A 19981020; BR 9808027 A 20000308; EP 0968235 A1 20000105; JP 2001518137 A 20011009

INPADOC legal status

2002-07-03 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011228

2001-10-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010817

2001-05-30 [RAP1] TRANSFER OF RIGHTS OF AN EP APPLICATION

- Owner name: EXXONMOBIL CHEMICAL PATENTS INC.

2000-01-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991006

2000-01-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT NL