Patent US4058649A successfully refreshed from Google Patents.
US4058649A
Expired / Lapsed
US
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Coating compositions and thermoplastic film substrates coated therewith
Assignee: Mobil Oil AS
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Filing: 1974-09-23
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Granted: 1977-11-15
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Expires: 1994-09-23
Abstract
Abstract A multipolymer coating composition particularly adapted for coating thermoplastic film substrates, comprising an interpolymer of (a) vinylidene chloride, (b) an alkyl acrylate such as methyl acrylate and (c) methacrylic acid or mixtures thereof with acrylic acid.
Inventors
- 👤 Robert Henry Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:44
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/32; B32B27/18; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08; B32B2270/00; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/50; B32B2307/514; B32B2307/518; B32B2307/70; B32B2307/746; B32B2553/00; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12; C08J2427/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A biaxially oriented polypropylene film substrate having a surface coating of a heat sealable composition consisting essentially of an interpolymer of (a) from about 5% to about 15% by weight of a monoethylenically unsaturated acid selected from the group consisting of methacrylic acid and mixtures of methacrylic acid and acrylic acid, (b) from about 50% to about 85% by weight of vinylidene chloride, and (c) from about 5% to about 45% by weight of an alkyl acrylate selected from the group consisting of methyl, ethyl, butyl, isobutyl and octyl acrylates.
Claim 2
Dependent Claim
90 words
A biaxially oriented polypropylene film substrate having a surface coating of a heat sealable composition consisting essentially of an interpolymer of (a) from about 5% to about 15% by weight of a monoethylenically unsaturated acid selected from the group consisting of methacrylic acid and mixtures of methacrylic acid and acrylic acid, (b) from about 50% to about 85% by weight of vinylidene chloride, and (c) from about 5% to about 45% by weight of an alkyl acrylate selected from the group consisting of methyl, ethyl, butyl, isobutyl and octyl acrylates.
Claim 3
Dependent Claim
60 words
A thermoplastic film substrate as defined in claim 1 having a surface coating wherein said coating is further characterized by containing from about 0.1% to about 1.0% by weight, based upon the total weight of said interpolymer, of a slip agent consisting of finely divided, water-insoluble particulate material having a particle size of from about 1 to about 5 microns.
Claim 4
Dependent Claim
27 words
A thermoplastic film substrate as defined in claim 1 wherein said coating is further characterized by containing a cold slip, anti-blocking material comprising a finely divided wax.
Claim 5
Dependent Claim
34 words
A thermoplastic film substrate as defined in claim 6 wherein said finely divided, water-insoluble particulate material consists of a member selected from the group consisting of talc, silica, clay, mica and polyvinyl chloride resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |