US4135037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesives and laminates
Assignee: Phillips Petroleum Co
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Filing: 1977-06-15
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Granted: 1979-01-16
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Expires: 1997-06-15
Abstract
Abstract Adhesive compositions comprising epoxidized rubbery copolymers and rosin-based tackifiers which exhibit superior tack and which are useful in laminating structures exhibiting outstanding peel strength and good water-resistance properties.
Inventors
- 👤 Kishore Udipi
- 👤 Henry L. Hsieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:31
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/016; B32B25/00; B32B25/14; B32B7/00; B32B7/04; B32B7/12; C; C09; C09J; C09J115/00; C09J163/00; C09J163/08; C09J193/00; C09J193/04; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2311/00; B32B2311/24; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/08; C08L2666/26; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
95 words
A plurality of layers having an adhesive composition consisting essentially of (1) at least one epoxidized rubbery copolymer of a conjugated diene and a monovinylarene having a conjugated diene/monovinylarene weight ratio of 45/55 to 95/5 and a weight average molecular weight of about 15,000 to 350,000 and wherein the extent of epoxidation, as defined by the ratio of olefinic double bonds modified by the epoxidation reaction to the number of initial double bonds, ranges from 5 to 80 percent and (2) at least one rosin-based tackifier between adjacent surfaces thereof as a bonding material therefor.
Claim 2
Dependent Claim
95 words
A plurality of layers having an adhesive composition consisting essentially of (1) at least one epoxidized rubbery copolymer of a conjugated diene and a monovinylarene having a conjugated diene/monovinylarene weight ratio of 45/55 to 95/5 and a weight average molecular weight of about 15,000 to 350,000 and wherein the extent of epoxidation, as defined by the ratio of olefinic double bonds modified by the epoxidation reaction to the number of initial double bonds, ranges from 5 to 80 percent and (2) at least one rosin-based tackifier between adjacent surfaces thereof as a bonding material therefor.
Claim 3
Dependent Claim
11 words
An article according to claim 1 wherein the layers are metal.
Claim 4
Dependent Claim
23 words
An article according to claim 1 wherein (1) is a block copolymer of isoprene and styrene or block copolymer of butadiene and styrene.
Claim 5
Dependent Claim
40 words
An article according to claim 1 wherein (1) is an epoxidized butadiene block copolymer and (2) is a mixture of a methyl ester of hydrogenated rosin and a pentaerythritol ester of hydrogenated rosin, and further wherein said layers are metal.
Claim 6
Dependent Claim
11 words
An article according to claim 4 wherein the metal is aluminum.
Claim 7
Independent Claim
131 words
A method for uniting surfaces of elements which comprises: (a) applying to at least one of said surfaces an adhesive composition consisting essentially of (1) at least one epoxidized rubbery copolymer of a conjugated diene and a monovinylarene having a conjugated diene/monovinylarene weight ratio of 45/55 to 95/5 and a weight average molecular weight of about 15,000 to 350,000 and wherein the extent of epoxidation, as defined by the ratio of olefinic double bonds modified by the epoxidation reaction to the number of initial double bonds, ranges from 5 to 80 percent and (2) at least one rosin-based tackifier, (b) holding said surfaces contiguous to one another with said composition disposed therebetween, and (c) allowing said adhesive composition to bond to said surfaces and form a structure having good T-peel strength.
Claim 8
Independent Claim
131 words
A method for uniting surfaces of elements which comprises: (a) applying to at least one of said surfaces an adhesive composition consisting essentially of (1) at least one epoxidized rubbery copolymer of a conjugated diene and a monovinylarene having a conjugated diene/monovinylarene weight ratio of 45/55 to 95/5 and a weight average molecular weight of about 15,000 to 350,000 and wherein the extent of epoxidation, as defined by the ratio of olefinic double bonds modified by the epoxidation reaction to the number of initial double bonds, ranges from 5 to 80 percent and (2) at least one rosin-based tackifier, (b) holding said surfaces contiguous to one another with said composition disposed therebetween, and (c) allowing said adhesive composition to bond to said surfaces and form a structure having good T-peel strength.
Claim 9
Dependent Claim
31 words
A method according to claim 6 wherein said adhesive composition in (a) is applied to said surfaces as a hot melt and is allowed to cool and bond to said surfaces.
Claim 10
Dependent Claim
11 words
A method according to claim 6 wherein said elements are metal.
Claim 11
Dependent Claim
21 words
A method according to claim 6 wherein (1) is an epoxidized rubbery copolymer of isoprene and styrene or butadiene and styrene.
Claim 12
Dependent Claim
42 words
A method according to claim 6 wherein (1) is an epoxidized rubbery copolymer of isoprene and styrene, (2) is a mixture of a methyl ester of hydrogenated rosin and a pentaerythritol ester of hydrogenated rosin, and further wherein said elements are metal.
Claim 13
Dependent Claim
31 words
A method according to claim 6 wherein said adhesive composition in (a) is applied in a solvent and the solvent is allowed to evaporate and form a bond between said layers.
Claim 14
Dependent Claim
81 words
An adhesive composition consisting essentially of (1) at least one epoxidized rubbery copolymer of a conjugated diene and a monovinylarene having a conjugated diene/monovinylarene weight ratio of 45/55 to 95/5 and a weight average molecular weight of about 15,000 to 350,000 and wherein the extent of epoxidation, as defined by the ratio of olefinic double bonds modified by the epoxidation reaction to the number of initial double bonds, ranges from 5 to 80 percent and (2) at least one rosin-based tackifier.
Claim 15
Dependent Claim
81 words
An adhesive composition consisting essentially of (1) at least one epoxidized rubbery copolymer of a conjugated diene and a monovinylarene having a conjugated diene/monovinylarene weight ratio of 45/55 to 95/5 and a weight average molecular weight of about 15,000 to 350,000 and wherein the extent of epoxidation, as defined by the ratio of olefinic double bonds modified by the epoxidation reaction to the number of initial double bonds, ranges from 5 to 80 percent and (2) at least one rosin-based tackifier.
Claim 16
Dependent Claim
48 words
A composition according to claim 12 wherein the amount of (2) present ranges from about 50 to about 300 weight percent based upon (1) and the adhesive has an initial viscosity of about 1,000 to about 100,000 cps as measured at 400° F. (204° C.) (ASTM method D1876-72).
Claim 17
Dependent Claim
21 words
A composition according to claim 12 wherein (1) is an epoxidized block copolymer of isoprene and styrene or butadiene and styrene.
Claim 18
Dependent Claim
11 words
A composition according to claim 12 which further contains an antioxidant.
Claim 19
Dependent Claim
50 words
A composition according to claim 12 wherein (1) is an epoxidized block copolymer of isoprene and styrene or butadiene and styrene, (2) is a mixture of a methyl ester of hydrogenated rosin and a pentaerythritol ester of hydrogenated rosin, and (3) the composition contains as an antioxidant n-octadecyl [3-(3,5-di-t-butyl-4-hydroxyphenyl)] propionate.
Claim 20
Dependent Claim
43 words
A composition according to claim 12 wherein (1) is a rubbery copolymer having a conjugated diene/monovinylarene weight ratio of 50/50 to 90/10, a weight average molecular weight of about 50,000 to 150,000, and an extent of epoxidation ranging from 15 to 60 percent.
Claim 21
Dependent Claim
21 words
A composition according to claim 17 wherein (1) is an epoxidized block copolymer of isoprene and styrene or butadiene and styrene.
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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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |