Patent US4340639A successfully refreshed from Google Patents.
US4340639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic paper comprising an olefin-based resin and an adduct
Assignee: Yupo Corp
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Filing: 1980-07-25
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Granted: 1982-07-20
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Expires: 2000-07-25
Abstract
Abstract A synthetic paper prepared by stretching a sheet of a composition comprising a thermoplastic resin mainly composed of an olefin-based resin and an adduct of melamine and isocyanuric acid or cyanuric acid to a size of 1.3 times or more the original size of the sheet at a temperature lower than the melting temperature of the olefin-based resin; such synthetic paper has good luster and sliding properties.
Inventors
- 👤 Takashi Toyoda
- 👤 Yozo Ohba
- 👤 Masaaki Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:41
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34928; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/31504; Y10T428/31547; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
A synthetic paper prepared by stretching a sheet of a composition comprising a thermoplastic resin, comprising an olefin-based resin, and an adduct of melamine and isocyanuric acid or cyanuric acid, wherein said adduct is present in an amount of from 0.5 to 200 parts by weight per 100 parts by weight of the thermoplastic resin, wherein said stretching is to a size of 1.3 times or more the original size of the sheet, in at least one direction at a temperature lower than the melting temperature of the olefin-based resin.
Claim 2
Dependent Claim
90 words
A synthetic paper prepared by stretching a sheet of a composition comprising a thermoplastic resin, comprising an olefin-based resin, and an adduct of melamine and isocyanuric acid or cyanuric acid, wherein said adduct is present in an amount of from 0.5 to 200 parts by weight per 100 parts by weight of the thermoplastic resin, wherein said stretching is to a size of 1.3 times or more the original size of the sheet, in at least one direction at a temperature lower than the melting temperature of the olefin-based resin.
Claim 3
Dependent Claim
32 words
A synthetic paper prepared as in claim 1, wherein said adduct is present in an amount from 5 to 50 parts by weight per 100 parts by weight of a thermoplastic resin.
Claim 4
Dependent Claim
25 words
A synthetic paper prepared as in claim 1 or 2, wherein said stretching is to a size from 2.5 to 10 times the original size.
Claim 5
Dependent Claim
25 words
A synthetic paper prepared as in claim 1 or 2, wherein said stretching is to a size from 5 to 50 times the original area.
Claim 6
Dependent Claim
16 words
A synthetic paper prepared as in claim 1 or 2, wherein said stretching is biaxial stretching.
Claim 7
Dependent Claim
15 words
A synthetic paper as in claim 1 or 2, wherein said stretching is uniaxial stretching.
Claim 8
Dependent Claim
14 words
A synthetic paper prepared as in claim 3, wherein said stretching is uniaxial stretching.
Claim 9
Dependent Claim
14 words
A synthetic paper prepared as in claim 4, wherein said stretching is biaxial stretching.
Claim 10
Dependent Claim
34 words
A synthetic paper prepared as in claim 1 or 2, wherein the olefin-based resin is selected from the group of polypropylene and polyethylene having a density of from 0.940 to 0.970 g/cm 3 .
Claim 11
Dependent Claim
32 words
A synthetic paper prepared as in claim 3, wherein the olefin-based resin is selected from the group of polypropylene and polyethylene having a density of from 0.940 to 0.970 g/cm 3 .
Claim 12
Dependent Claim
25 words
A synthetic paper prepared as in claim 1 or 2, wherein the average particle diameter of said adduct is from about 0.1 to 10 microns.
References Cited (Backward Citations)
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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) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |