US4684576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maleic anhydride grafts of olefin polymers
Assignee: Dow Chemical Co
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Filing: 1986-02-03
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Granted: 1987-08-04
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Expires: 2006-02-03
Abstract
Abstract Succinic acid or succinic anhydride grafts of HDPE are blended with ungrafted LLDPE and with ungrafted LDPE to form blends having useful adhesive properties. The succinic acid or succinic anhydride groups are provided by grafting, respectively, maleic acid or maleic anhydride onto HDPE. Laminates of the blends on various metals and polymers are shown.
Inventors
- 👤 Ricky L. Tabor
- 👤 James A. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:39
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B15/00; B32B15/04; B32B15/08; B32B7/00; B32B7/04; B32B7/12; C; C08; C08F; C08F255/00; C08F255/02; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L51/00; C08L51/06; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/06; C09J123/08; C09J123/0807; C09J123/0815; C09J151/00; C09J151/06; C08L23/06; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31678; Y10T428/31692; Y10T428/31725; Y10T428/31739; Y10T428/3175; Y10T428/31757; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
101 words
A blend consisting of grafted high density polyethylene, HDPE, with ungrafted LLDPE copolymer, having a density in the range of 0.88 to 0.935 g/cc, or ungrafted LDPE, having a density in the range of 0.91 to 0.93 g/cc, wherein the grafted HDPE consists essentially of HDPE, having initially a density in the range of 0.94 to 0.965 g/cc, which has been grafted with maleic acid or maleic anhydride, thereby providing succinic acid or succinic anhydride groups grafted along the HDPE polymer chain, said blend being in the form of a layer adhered to at least part of at least one substrate.
Claim 2
Dependent Claim
101 words
A blend consisting of grafted high density polyethylene, HDPE, with ungrafted LLDPE copolymer, having a density in the range of 0.88 to 0.935 g/cc, or ungrafted LDPE, having a density in the range of 0.91 to 0.93 g/cc, wherein the grafted HDPE consists essentially of HDPE, having initially a density in the range of 0.94 to 0.965 g/cc, which has been grafted with maleic acid or maleic anhydride, thereby providing succinic acid or succinic anhydride groups grafted along the HDPE polymer chain, said blend being in the form of a layer adhered to at least part of at least one substrate.
Claim 3
Dependent Claim
92 words
The laminate structure comprising at least one substrate having adhered to at least a portion thereof a blend of grafted HDPE and ungrafted LLDPE copolymer, said grafted HDPE consisting of HDPE which has been grafted with maleic acid or maleic anhydride, thereby providing succinic acid or succinic anhydride groups grafted along the HDPE polymer chain, and wherein the ungrafted LLDPE has a density in the range of about 0.90 g/cc to about 0.925 g/cc and has a C 4 -C 8 alkene comonomer content of about 1% to about 20% by weight.
Claim 4
Dependent Claim
92 words
The laminate structure comprising at least one substrate having adhered to at least a portion thereof a blend of grafted HDPE and ungrafted LLDPE copolymer, said grafted HDPE consisting of HDPE which has been grafted with maleic acid or maleic anhydride, thereby providing succinic acid or succinic anhydride groups grafted along the HDPE polymer chain, and wherein the ungrafted LLDPE has a density in the range of about 0.90 g/cc to about 0.925 g/cc and has a C 4 -C 8 alkene comonomer content of about 1% to about 20% by weight.
Claim 5
Dependent Claim
12 words
The laminate structure of claim 2 wherein the alkene comonomer comprises 1-octene.
Claim 6
Dependent Claim
96 words
A laminate structure comprising at least one substrate having adhered to at least a portion thereof a blend consisting of grafted HDPE/ungrafted LLDPE copolymer, having a density in the range of 0.88 to 0.935 g/cc, or a blend of grafted HDPE/ungrafted LDPE, having a density in the range of 0.91 to 0.93 g/cc, wherein the grafted HDPE consists of HDPE, having initially a density in the range of 0.94 to 0.965 g/cc, which has been grafted with maleic acid or maleic anhydride, thereby providing succinic acid or succinic anhydride groups grafted along the HDPE polymer chain.
Claim 7
Dependent Claim
96 words
A laminate structure comprising at least one substrate having adhered to at least a portion thereof a blend consisting of grafted HDPE/ungrafted LLDPE copolymer, having a density in the range of 0.88 to 0.935 g/cc, or a blend of grafted HDPE/ungrafted LDPE, having a density in the range of 0.91 to 0.93 g/cc, wherein the grafted HDPE consists of HDPE, having initially a density in the range of 0.94 to 0.965 g/cc, which has been grafted with maleic acid or maleic anhydride, thereby providing succinic acid or succinic anhydride groups grafted along the HDPE polymer chain.
Claim 8
Dependent Claim
21 words
The laminate structure of claim 4 wherein at least one substrate consists of a metal, paper, wood, glass, or polymer material.
Claim 9
Dependent Claim
51 words
The laminate of claim 4 wherein the blend comprises grafted HDPE and ungrafted LLDPE copolymer wherein the LLDPE copolymer is one having a density in the range of about 0.88 g/cc to about 0.935 g/cc, containing about 0.5% to about 35% by weight of a C 3 -C 12 alkene comonomer.
Claim 10
Dependent Claim
51 words
The laminate of claim 4 wherein the blend comprises grafted HDPE and ungrafted LLDPE copolymer wherein the LLDPE copolymer is one having a density in the range of about 0.90 g/cc to about 0.925 g/cc, containing about 1% to about 20% by weight of a C 4 -C 8 alkene comonomer.
Claim 11
Dependent Claim
36 words
The laminate of claim 4 wherein the ungrafted LLDPE copolymer has a density in the range of about 0.90 g/cc to about 0.925 g/cc and contains about 2% to about 15% by weight of 1-octene comonomer.
Claim 12
Dependent Claim
35 words
The laminate of claim 4 wherein the ungrafted LLDPE copolymer has a melt flow value, MFV, in the range of about 0.1 gm/10 min. to about 2000 gm/10 min. as measured according to ASTM D-1238(E).
Claim 13
Dependent Claim
29 words
The laminate of claim 4 wherein the ungrafted LLDPE copolymer has a melt flow value, MFV, in the range of about 0.5 gm/10 min. to about 120 gm/10 min.
Claim 14
Dependent Claim
29 words
The laminate of claim 4 wherein the ungrafted LLDPE copolymer has a melt flow value, MFV, in the range of about 0.7 gm/10 min. to about 40 gm/10 min.
Claim 15
Dependent Claim
46 words
The laminate of claim 4 wherein the ungrafted LDPE has a melt flow value, MFV, in the range of about 0.5 gm/10 min. to about 120 gm/10 min. according to ASTM D-1238(E) and a density in the range of about 0.90 g/cc to about 0.935 g/cc.
Claim 16
Dependent Claim
39 words
The laminate of claim 4 wherein the ungrafted LDPE has a MFV in the range of about 0.7 gm/10 min. to about 40 gm/10 min. and a density in the range of about 0.91 g/cc to about 0.93 g/cc.
Claim 17
Dependent Claim
40 words
The laminate of claim 4 wherein the HDPE, before grafting, has a MFV in the range of about 0.1 gm/10 min. to about 500 gm/10 min. and a density in the range of about 0.94 g/cc to about 0.965 g/cc.
Claim 18
Dependent Claim
40 words
The laminate of claim 4 wherein the HDPE, before grafting, has a MFV in the range of about 0.5 gm/10 min. to about 150 gm/10 min. and a density in the range of about 0.945 g/cc to about 0.960 g/cc.
Claim 19
Dependent Claim
31 words
The laminate of claim 4 wherein the succinic acid or succinic anhydride groups on the HDPE polymer claim comprise about 0.0001 to about 10 weight percent of the grafted HDPE polymer.
Claim 20
Dependent Claim
31 words
The laminate of claim 4 wherein the succinic acid or succinic anhydride groups on the HDPE polymer chain comprise about 0.01 to about 5 weight percent of the grafted HDPE polymer.
Claim 21
Dependent Claim
20 words
The laminate of claim 4 wherein the grafted HDPE comprises about 0.5 to about 99.5 weight percent of the blend.
Claim 22
Dependent Claim
20 words
The laminate of claim 4 wherein the grafted HDPE comprises about 3 to about 50 weight percent of the blend.
Claim 23
Dependent Claim
14 words
The laminate of claim 4 wherein the blend comprises grafted HDPE and ungrafted LDPE.
Claim 24
Dependent Claim
40 words
The laminate structure of claim 4 wherein at least one substrate comprises at least one material selected from the group consisting of iron, steel, chromium, aluminum, copper, nylon, non-oriented polypropylene (PP), oriented polypropylene (OPP), paper, wood, glass, or ethylene polymer.
Claim 25
Dependent Claim
14 words
The laminate structure of claim 4 wherein at least one substrate is a metal.
Claim 26
Dependent Claim
14 words
The laminate structure of claim 4 wherein at least one substrate is a plastic.
Claim 27
Dependent Claim
18 words
The laminate structure of claim 4 wherein at least one substrate is iron, steel, chromium, aluminum, or copper.
Claim 28
Dependent Claim
18 words
The laminate structure of claim 4 wherein at least one substrate is nylon, non-oriented polypropylene, or oriented polypropylene.
Claim 29
Dependent Claim
17 words
The laminate structure of claim 4 wherein at least one substrate is nylon or other polyamide resin.
Claim 30
Dependent Claim
16 words
The laminate structure of claim 4 wherein at least one substrate is an ethylene-vinyl alcohol copolymer.
Claim 31
Dependent Claim
15 words
The laminate of claim 4 wherein the blend comprises grafted HDPE and ungrafted LLDPE copolymer.
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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) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |