US4424253A
Expired / Lapsed
US
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Laminated sheet structures
Assignee: EIDP Inc
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Filing: 1982-02-25
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Granted: 1984-01-03
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Expires: 2002-02-25
Abstract
Abstract Blends of chlorinated hydrocarbon rubber selected from chlorosulfonated polyethylene having about 22-28 weight % Cl and 0.4-1.2 weight % S and chlorinated polyethylene having about 22-28 weight % Cl with EPM or EPDM elastomers in a proportion of 75-93% of the former and 7-25% of the latter can be compounded with usual fillers, pigments, stabilizers, and processing aids and formed into sheets which form hot bonded laminate structures with linear ethylene polymer sheets. Such laminate structures have very good adhesion peel strength, good mechanical strength and stretchability and are particularly useful in making pool and pond liners.
Inventors
- 👤 Bernard F. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:43
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; B32B25/08; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B27/32; B32B27/38; B32B2270/00; B32B2323/00; B32B2323/04; B32B2323/16; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31924; Y10T428/31931; Y10T428/31935
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
95 words
A laminate sheet structure comprising hot bonded alternate plies of a linear polymer of ethylene containing 0 to about 10 weight percent of a C 3 -C 8 α-olefin comonomer and of a composition consisting essentially of a blend of about 75-93 weight % of a chlorinated hydrocarbon elastomer selected from the group consisting of chlorosulfonated polyethylene containing about 22-28% Cl and 0.4-1.2% S and chlorinated polyethylene containing about 22-28% Cl with 7-25 weight % of an ethylene/propylene copolymer elastomer the plies that consist essentially of the blend being at least about 0.25 mm thick.
Claim 2
Dependent Claim
95 words
A laminate sheet structure comprising hot bonded alternate plies of a linear polymer of ethylene containing 0 to about 10 weight percent of a C 3 -C 8 α-olefin comonomer and of a composition consisting essentially of a blend of about 75-93 weight % of a chlorinated hydrocarbon elastomer selected from the group consisting of chlorosulfonated polyethylene containing about 22-28% Cl and 0.4-1.2% S and chlorinated polyethylene containing about 22-28% Cl with 7-25 weight % of an ethylene/propylene copolymer elastomer the plies that consist essentially of the blend being at least about 0.25 mm thick.
Claim 3
Dependent Claim
61 words
A laminate structure of claim 1 wherein the composition consisting essentially of a blend of a chlorinated hydrocarbon elastomer with an ethylene/propylene copolymer elastomer also comprises additives selected from fillers, stabilizers, and processing aids, the total amount of all additives, including any pigments present, being up to about 150% based on the weight of the chlorinated hydrocarbon elastomer-ethylene/propylene copolymer elastomer blend.
Claim 4
Dependent Claim
14 words
A laminate structure of claim 2 wherein the chlorinated hydrocarbon elastomer is chlorosulfonated polyethylene.
Claim 5
Dependent Claim
13 words
A laminate structure of claim 3 wherein the composition contains an epoxy resin.
Claim 6
Dependent Claim
14 words
A laminate structure of claim 2 wherein the chlorinated hydrocarbon elastomer is chlorinated polyethylene.
Claim 7
Dependent Claim
38 words
A laminate structure of claim 5 wherein an ethylene/vinyl acetate copolymer serves as processing aid and is present in an amount of up to about 10% based on the weight of the chlorinated hydrocarbon elastomer-ethylene/propylene copolymer elastomer blend.
Claim 8
Dependent Claim
36 words
A laminate structure of claim 2 consisting of one ply of linear polymer of ethylene and one ply of a composition consisting essentially of a blend of a chlorinated hydrocarbon elastomer with an ethylene/propylene copolymer elastomer.
Claim 9
Dependent Claim
39 words
A laminate structure of claim 2 consisting of a core ply of linear polymer of ethylene and of two outer plies of a composition consisting essentially of a blend of a chlorinated hydrocarbon elastomer with an ethylene/propylene copolymer elastomer.
Claim 10
Dependent Claim
15 words
A laminate of claim 7 or 8 wherein the linear polymer of ethylene is polyethylene.
Claim 11
Dependent Claim
34 words
A laminate structure of claim 7 or 8, wherein the ethylene/propylene elastomer is an EPDM elastomer which contains about 50-75 weight % of ethylene and 1-6 weight % of diene, the remainder being propylene.
Claim 12
Dependent Claim
22 words
A laminate of claim 10, wherein the amount of EPDM elastomer is 10-20 weight % of the blend with chlorinated hydrocarbon elastomer.
Claim 13
Dependent Claim
17 words
A laminate structure of claim 7 or 8 wherein the ethylene/propylene copolymer elastomer is an ethylene/propylene dipolymer.
Claim 14
Dependent Claim
24 words
A laminate structure of claim 7, wherein the core ply is about 0.1-0.25 mm thick, and the outer plies are about 0.25-0.5 mm thick.
Claim 15
Dependent Claim
131 words
In a process for hot bonding a sheet of a composition consisting essentially of a chlorinated hydrocarbon elastomer to a sheet of a polymer of ethylene, to form a laminate, the improvement of using a sheet of a linear polymer of ethylene containing 0 to about 10 weight percent of a C 3 -C 8 α-olefin comonomer and a sheet having a thickness of at least about 0.25 mm of a composition consisting essentially of a blend of a chlorinated hydrocarbon elastomer selected from the group consisting of chlorosulfonated polyethylene containing about 22-28% Cl and 0.4-1.2% S and chlorinated polyethylene containing about 22-28% Cl with an ethylene/propylene copolymer elastomer, the respective proportions of the blend components being about 75-93 weight % of the former and 7-25 weight % of the latter.
Claim 16
Dependent Claim
131 words
In a process for hot bonding a sheet of a composition consisting essentially of a chlorinated hydrocarbon elastomer to a sheet of a polymer of ethylene, to form a laminate, the improvement of using a sheet of a linear polymer of ethylene containing 0 to about 10 weight percent of a C 3 -C 8 α-olefin comonomer and a sheet having a thickness of at least about 0.25 mm of a composition consisting essentially of a blend of a chlorinated hydrocarbon elastomer selected from the group consisting of chlorosulfonated polyethylene containing about 22-28% Cl and 0.4-1.2% S and chlorinated polyethylene containing about 22-28% Cl with an ethylene/propylene copolymer elastomer, the respective proportions of the blend components being about 75-93 weight % of the former and 7-25 weight % of the latter.
Claim 17
Dependent Claim
59 words
A method of claim 14 wherein the composition consisting essentially of a blend of a chlorinated hydrocarbon elastomer with an ethylene/propylene elastomer also comprises additives selected from fillers, stabilizers, and processing aids, the total amount of all additives, including any pigments present, being up to about 150% based on the weight of the chlorinated hydrocarbon elastomer-ethylene/propylene copolymer elastomer blend.
Claim 18
Dependent Claim
20 words
A method of claim 15 wherein the amount of ethylene/propylene copolymer elastomer in the blend is about 10-20 weight %.
Claim 19
Dependent Claim
31 words
A method of claim 15 wherein the ethylene/propylene copolymer is an EPDM elastomer which contains about 50-75 weight % of ethylene and 1-6 weight % of diene, the remainder being propylene.
Claim 20
Dependent Claim
28 words
A method of claim 14 wherein the chlorinated hydrocarbon elastomer is chlorosulfonated polyethylene; the ethylene/propylene copolymer elastomer is an EPDM elastomer; and the polymer of ethylene is polyethylene.
References Cited (Backward Citations)
US2925354A
Cited
US4115614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |