| US 7,488,778 B2 | ||
| Bi-modal ionomers | ||
| John Chu Chen, Hockessin, Del. (US) | ||
| Assigned to E.I. du Pont de Nemours and Company, Wilmington, Del. (US) | ||
| Filed on Aug. 17, 2007, as Appl. No. 11/893,831. | ||
| Application 10/854725 is a division of application No. 10/376969, filed on Feb. 28, 2003, granted, now 6,762,246. | ||
| Application 10/376969 is a division of application No. 09/924194, filed on Aug. 08, 2001, granted, now 6,562,906. | ||
| Application 11/893831 is a continuation of application No. 11/101078, filed on Apr. 06, 2005, granted, now 7,273,903. | ||
| Application 11/101078 is a continuation of application No. 10/854725, filed on May 26, 2004, granted, now 7,037,967. | ||
| Claims priority of provisional application 60/279023, filed on Mar. 27, 2001. | ||
| Claims priority of provisional application 60/224668, filed on Aug. 11, 2000. | ||
| Prior Publication US 2008/0058465 A1, Mar. 06, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. C08L 23/00 (2006.01); C08L 23/02 (2006.01); C08L 23/08 (2006.01); A63B 37/00 (2006.01); C08K 3/18 (2006.01); C08K 3/22 (2006.01); C08K 5/00 (2006.01) | ||
| U.S. Cl. 525—191 [525/221; 525/222; 525/240; 524/430; 524/432; 524/500; 524/515] | 32 Claims |
| 1. A composition comprising a bimodal composition consisting essentially of:
(a) one or more E/X/Y copolymers, wherein E represents copolymerized residues of ethylene, X represents copolymerized residues
of a C3 to C8, α,β-ethylenically unsaturated carboxylic acid, and Y represents copolymerized residues of a softening comonomer
selected from the group consisting of alkyl acrylates and alkyl methacrylates wherein the alkyl groups have from 1-8 carbon
atoms, wherein the level of X is about 2 to 30 wt % and the level of Y is 0 to about 35 wt %, based on the total weight of
the E/X/Y copolymer, and wherein the molecular weight (Mw) of the E/X/Y copolymer is in the range of 80,000 to 500,000; and
(b) one or more E/(M)AA copolymers comprising 3 to 25 wt % of copolymerized residues of (M)AA based on the total weight of
the E/(M)AA copolymer, wherein the molecular weight (Mw) of the E/(M)AA copolymer is in the range of 2,000 and 30,000; and
wherein the acid residues of (a) and of (b) are at least partially neutralized.
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