Patent US4446180A successfully refreshed from Google Patents.
US4446180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition, film laminate and product pouch or tube therefrom
Assignee: ExxonMobil Oil Corp
•
Filing: 1983-08-04
•
Granted: 1984-05-01
•
Expires: 2003-08-04
Abstract
Abstract An adhesive composition comprising a combination of a styrene-butadiene block copolymer, a cyclopentadiene-styrene resin and a random terpolymer of 1,3-pentadiene, a monocyclic terpene, and alpha methylstyrene. A flexible film laminate and product pouchor tube therefrom comprising two or more polymer film layers adhesively bonded together by means of a layer of the defined adhesive.
Inventors
- 👤 Frederick C. Schwab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:16
CPC Classifications
C; C09; C09J; C09J153/00; C09J153/02; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/26; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
A film laminate comprising two or more polymeric films bonded together with an adhesive combination of: (a) a styrene-butadiene block copolymer having a monomer parts by weight ratio of from about 1 to 3:3 to 1; (b) a cyclopentadiene-styrene resin having a monomer parts by weight ratio of from about 1:2 to 1:4 respectively; and (c) a random terpolymer of (1) 1,3-pentadiene, (2) a monocyclic terpene; and (3) alpha methylstyrene, wherein the monomers are in a parts by weight ratio of from about 3-4:3-4:2.5-3.5 respectively; said combination comprising a parts by weight ratio of from about 7-10 of (a), 0.5-1.5 of (b), and 2-4 of (c).
Claim 2
Dependent Claim
106 words
A film laminate comprising two or more polymeric films bonded together with an adhesive combination of: (a) a styrene-butadiene block copolymer having a monomer parts by weight ratio of from about 1 to 3:3 to 1; (b) a cyclopentadiene-styrene resin having a monomer parts by weight ratio of from about 1:2 to 1:4 respectively; and (c) a random terpolymer of (1) 1,3-pentadiene, (2) a monocyclic terpene; and (3) alpha methylstyrene, wherein the monomers are in a parts by weight ratio of from about 3-4:3-4:2.5-3.5 respectively; said combination comprising a parts by weight ratio of from about 7-10 of (a), 0.5-1.5 of (b), and 2-4 of (c).
Claim 3
Dependent Claim
14 words
The laminate of claim 1 wherein at least one film is a polyacrylonitrile film.
Claim 4
Dependent Claim
12 words
The laminate of claim 2 wherein said polyacrylonitrile film is a homopolymer.
Claim 5
Dependent Claim
13 words
The laminate of claim 1 wherein at least one film is a polyolefin.
Claim 6
Dependent Claim
18 words
The laminate of claim 4 wherein said polyolefin is a C 2 -C 8 polymer or copolymer thereof.
Claim 7
Dependent Claim
12 words
The laminate of claim 5 wherein said polyolefin is a heat-sealable polyolefin.
Claim 8
Dependent Claim
21 words
The film laminate of claim 1 in which the individual layers range from about 0.1 to about 10 mils in thickness.
Claim 9
Dependent Claim
15 words
A retortable food pouch fabricated from any of the laminates of claims 2-7 and 1.
References Cited (Backward Citations)
US3862068A
Cited
US4179480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |