US3950209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing carboxylated polymer composition
Assignee: Tosoh Corp
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Filing: 1974-10-17
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Granted: 1976-04-13
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Expires: 1994-10-17
Abstract
Abstract Substrates are bonded by applying to a substrate a graft copolymer of 0.1 - 20 parts by weight of an unsaturated carboxylic acid or anhydride, 1 - 40 parts by weight of a vinyl monomer containing at least one chlorine atom in the presence of 99 - 40 parts by weight of an ethylene-vinylacetate copolymer.
Inventors
- 👤 Yujiro Kosaka
- 👤 Masaru Uemura
- 👤 Mitsutaka Saito
- 👤 Yuji Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:42
CPC Classifications
C; C08; C08F; C08F263/00; C08F263/02; C08F263/04; C08F255/00; C08F255/02; C08F255/026; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
A method of bonding substrates, which comprises: applying to a first substrate a graft copolymer which comprises a polymer of 0.1 - 20 parts by weight of an unsaturated carboxylic acid or anhydride monomer, and 1 - 40 parts by weight of a vinyl monomer containing at least one chlorine atom, which is grafted onto 99 - 40 parts by weight of an ethylene-vinylacetate copolymer, and bonding a second substrate thereto.
Claim 2
Independent Claim
71 words
A method of bonding substrates, which comprises: applying to a first substrate a graft copolymer which comprises a polymer of 0.1 - 20 parts by weight of an unsaturated carboxylic acid or anhydride monomer, and 1 - 40 parts by weight of a vinyl monomer containing at least one chlorine atom, which is grafted onto 99 - 40 parts by weight of an ethylene-vinylacetate copolymer, and bonding a second substrate thereto.
Claim 3
Dependent Claim
23 words
The method of claim 1, wherein the vinylacetate content of said ethylene-vinylacetate copolymer is in the range of 5 - 70 weight percent.
Claim 4
Dependent Claim
23 words
The method of claim 2, wherein the vinylacetate content of said ethylene-vinylacetate copolymer is in the range of 10 - 40 weight percent.
Claim 5
Dependent Claim
29 words
The method of claim 1, wherein said unsaturated carboxylic acid or anhydride is acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid or acidic esters or anhydrides thereof.
Claim 6
Dependent Claim
23 words
The method of claim 1, wherein said vinyl monomer containing at least one chloride atom is vinyl chloride, vinylidene chloride, allyl-chloride or methallylchloride.
Claim 7
Dependent Claim
36 words
The method of claim 1, wherein an olefin or vinyl ester is added to said monomers and grafted onto said copolymer in amounts ranging from 0.1 - 20 parts by weight based on the grafted polymer.
References Cited (Backward Citations)
US3808294A
Cited
US3856733A
Cited
US3737483A
Cited
US3749756A
Cited
US3838079A
Cited
US3853970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |