US4121011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric article coated with a thermochromic paint
Assignee: Raychem Corp
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Filing: 1977-06-09
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Granted: 1978-10-17
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Expires: 1997-06-09
Abstract
Abstract An article comprising a polymeric material and coated with a thermochromic paint. The improvement comprises the addition to the thermochromic paint of a non-thermochromic compound selected from the group consisting of the sulfates, hydrated sulfates and nitrides of boron, aluminum, tin, lead, arsenic, antimony, bismuth, zinc and phosphorus; the sulfides and hydrated sulfides of boron, aluminum, bismuth and phoshorus; the oxides and the hydrated oxides of boron, arsenic, antimony and phosphorus and the salts, organic compounds and free acids of the oxyanions of boron, arsenic, antimony and phosphorus.
Inventors
- 👤 Leon C. Glover
- 👤 Eugene F. Lopez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91218; B29C61/00; B29C61/06; B29C61/0608; B29C61/0666; B29C66/91221; C; C09; C09D; C09D5/00; C09D5/26; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/30; C09J7/35; H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G15/1806; B29C2061/0683; B29C65/00; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/70; B29C66/73; B29C66/737; B29C66/7371; B29C66/73715; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10S252/00; Y10S252/962; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1352; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
In an article comprising a polymeric material subject to oxidative degradation and having a thermochromic paint thereon, said paint containing a thermochromic pigment comprising a metallic compound, the improvement comprising the addition to the paint of a non-thermochromic compound in amounts effective to inhibit degradation of said polymeric material by the thermochromic pigment, said non-thermochromic compound selected from the group consisting of the sulfates, hydrated sulfates and nitrides of boron, aluminum, tin, lead, arsenic, antimony, bismuth, zinc and phosphorus; the sulfides and hydrated sulfides of boron, aluminum, bismuth and phosphorus; the oxides and hydrated oxides of boron, arsenic, and antimony and the salts, organic compounds and free acids of the oxyanions of boron, arsenic, and antimony and oxides, salts and organic derivatives of oxyanions of phosphorus.
Claim 2
Dependent Claim
126 words
In an article comprising a polymeric material subject to oxidative degradation and having a thermochromic paint thereon, said paint containing a thermochromic pigment comprising a metallic compound, the improvement comprising the addition to the paint of a non-thermochromic compound in amounts effective to inhibit degradation of said polymeric material by the thermochromic pigment, said non-thermochromic compound selected from the group consisting of the sulfates, hydrated sulfates and nitrides of boron, aluminum, tin, lead, arsenic, antimony, bismuth, zinc and phosphorus; the sulfides and hydrated sulfides of boron, aluminum, bismuth and phosphorus; the oxides and hydrated oxides of boron, arsenic, and antimony and the salts, organic compounds and free acids of the oxyanions of boron, arsenic, and antimony and oxides, salts and organic derivatives of oxyanions of phosphorus.
Claim 3
Dependent Claim
20 words
The article of claim 1 wherein the polymeric material is a polyolefin or a copolymer or terpolymer of a polyolefin.
Claim 4
Dependent Claim
19 words
The article of claim 1 wherein the dry thermochromic paint comprises from 4 to 60% of said non-thermochromic compound.
Claim 5
Dependent Claim
18 words
The article of claim 3 wherein the thermochromic paint comprises from 20 to 35% of said non-thermochromic compound.
Claim 6
Dependent Claim
71 words
The article of claim 1 having in addition, a hot melt adhesive on the surface of the plastic opposite the surface having said thermochromic paint, whereby said article may be adhered to a substrate through the application of heat, said hot melt adhesive bonding the article to the substrate and said thermochromic pigment indicating whether sufficient heat has been applied to melt said adhesive without causing degradation of the polymeric material.
Claim 7
Dependent Claim
11 words
The article of claim 5 wherein the polymeric material is heat-shrinkable.
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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) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |