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US4230830A Expired / Lapsed US ⏱️ 0.0 years remaining

Adhesive blends containing thermally grafted ethylene polymer

Assignee: EIDP Inc
•
Filing: 1979-03-30
•
Granted: 1980-10-28
•
Expires: 1999-03-30
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Abstract

Abstract Polymeric blends particularly useful as adhesives for nylon prepared from an ethylene polymer and a second polymer grafted with maleic anhydride.

Inventors

  • 👤 Stephen R. Tanny
  • 👤 Philip S. Blatz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 04:13
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 156 words
A polymer blend consisting essentially of a. about from 80-99% by weight of a first olefinic polymer selected from (i) non-polar ethylene polymers and copolymers having a density of 0.930 to 0.965 g/cc and (ii) copolymers of ethylene having up to about 30 weight percent of at least one ethylenically unsaturated ester having from 4 to 12 carbon atoms; and b. about from 1-19% of a second olefinic polymer selected from the group consisting of (i) non-polar ethylene polymers and copolymers having a density of about from 0.945 to 0.965 g/cc and (ii) terpolymers of ethylene, at least one α-olefin having from 3-6 carbon atoms, and at least one nonconjugated diene; the second olefinic polymer being thermally grafted with unsaturated acid or anhydride to give a copolymer having about from 0.02 to 4.0 weight percent of grafted succinic groups, provided, however, that when the second olefinic polymer is (ii), then the first olefinic polymer is (ii).
Claim 2
Dependent Claim 156 words
A polymer blend consisting essentially of a. about from 80-99% by weight of a first olefinic polymer selected from (i) non-polar ethylene polymers and copolymers having a density of 0.930 to 0.965 g/cc and (ii) copolymers of ethylene having up to about 30 weight percent of at least one ethylenically unsaturated ester having from 4 to 12 carbon atoms; and b. about from 1-19% of a second olefinic polymer selected from the group consisting of (i) non-polar ethylene polymers and copolymers having a density of about from 0.945 to 0.965 g/cc and (ii) terpolymers of ethylene, at least one α-olefin having from 3-6 carbon atoms, and at least one nonconjugated diene; the second olefinic polymer being thermally grafted with unsaturated acid or anhydride to give a copolymer having about from 0.02 to 4.0 weight percent of grafted succinic groups, provided, however, that when the second olefinic polymer is (ii), then the first olefinic polymer is (ii).
Claim 3
Dependent Claim 16 words
A polymer blend of claim 1 wherein the first olefinic polymer is an ethylene/vinyl acetate copolymer.
Claim 4
Dependent Claim 19 words
A polymer blend of claim 2 wherein the second olefinic polymer is an ethylene/propylene/hexadiene terpolymer grafted with succinic groups.
Claim 5
Dependent Claim 19 words
A polymer blend of claim 2 wherein the second olefinic polymer is an ethylene polymer grafted with succinic groups.
Claim 6
Dependent Claim 16 words
A copolymer blend of claim 1 wherein the first olefinic polymer is an ethylene/methyl acrylate copolymer.
Claim 7
Dependent Claim 16 words
A copolymer blend of claim 1 wherein the first olefinic polymer is an ethylene/isobutyl acrylate copolymer.

References Cited (Backward Citations)

US3284380A Cited
US3595943A Cited
US3658948A Cited
US3862265A Cited
US3873643A Cited
US3884882A Cited
US4087587A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-10-28 1984-04-28 1984-10-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-10-28 1988-04-28 1988-10-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-10-28 1992-04-28 1992-10-28 $7700.00 Window Closed / Lapsed

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