US4983653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester shrinkable film containing benzotriazole
Assignee: Mitsubishi Chemical Corp
•
Filing: 1989-04-06
•
Granted: 1991-01-08
•
Expires: 2009-04-06
Abstract
Abstract Disclosed herein is a polyester shrinkable film. The film according to the present invention can provide extremely excellent durability and long-time storability of contents of a container in labelling and shrink packaging use.
Inventors
- 👤 Yujiro Fukuda
- 👤 Hiromi Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:27
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; B; B29; B29C; B29C61/00; B29C61/003; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; B29C35/00; B29C35/02; B29C35/04; B29C35/049; B29K; B29K2067/00; C08J2367/00; C08J2367/02; C08J2467/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A polyester shrinkable film containing from 0.1 to 20% by weight of an ultraviolet absorber having 10% weight loss temperature (T 10 ) upon thermogravimetric analysis of not lower than 200°C., which film has a shrinkage from 30 to 80% in one direction of either the longitudinal direction or the transverse direction and a shrinkage from -5 to 10% in the other direction perpendicular to the main shrinking direction after treatment of 5 minutes at 100° C. in an air oven, and a light transmittance at a wavelength of 390 nm of not greater than 20%.
Claim 2
Dependent Claim
96 words
A polyester shrinkable film containing from 0.1 to 20% by weight of an ultraviolet absorber having 10% weight loss temperature (T 10 ) upon thermogravimetric analysis of not lower than 200°C., which film has a shrinkage from 30 to 80% in one direction of either the longitudinal direction or the transverse direction and a shrinkage from -5 to 10% in the other direction perpendicular to the main shrinking direction after treatment of 5 minutes at 100° C. in an air oven, and a light transmittance at a wavelength of 390 nm of not greater than 20%.
Claim 3
Dependent Claim
39 words
The polyester shrinkable film according to claim 1, wherein the ultraviolet absorber is selected from the group consisting of benzophenone type absorbers, benzotriazole type absorbers, salicylic acid derivative type absorbers, cyanoacrylate type absorbers and oxalic acid anilide type absorbers.
Claim 4
Dependent Claim
14 words
The polyester shrinkable film according to claim 1, wherein the ultraviolet absorber is 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole.
Claim 5
Dependent Claim
14 words
The polyester shrinkable film according to claim 1, wherein the ultraviolet absorber is 2-(2'-hydroxy-5'-methylphenyl)benzotriazole.
Claim 6
Dependent Claim
16 words
The polyester shrinkable film according to claim 1, wherein the ultraviolet absorber is 2-[2'-hydroxy-3',5'-bis (α,α- dimethylbenzyl)phenyl]-2H-benzotriazole.
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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) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |