US4601948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency heatable plastics
Assignee: Dow Chemical Co
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Filing: 1984-08-31
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Granted: 1986-07-22
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Expires: 2004-08-31
Abstract
Abstract Olefin polymers which are unsuited, or ill-suited, for heating, sealing, or bonding by the action of high-frequency electromagnetic radiation, especially microwave radiation, are rendered heatable by such radiation by incorporating carbon monoxide, as a comonomer, into the polymer structure. Novel adhesives comprising terpolymers of ethylene/carbon monoxide/acids are disclosed, where the acid moiety of the terpolymer is at least one carboxylic acid which is polymerizable through carbon-to-carbon unsaturation, and salts thereof.
Inventors
- 👤 Gerald M. Lancaster
- 👤 James A. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:16
CPC Classifications
C; C09; C09J; C09J173/00; B; B29; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/1403; B29C65/1425; B29C65/1477; B29C65/1483; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B32; B32B; B32B27/00; B32B27/04; C08; C08G; C08G67/00; C08G67/02; C08J; C08J5/00; C08J5/12; C08J5/124; B29C66/43; B29C66/70; B29C66/71; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/7394; B29C66/73941; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; B29L2031/7162; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31645; Y10T428/31678; Y10T428/31692; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31935
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
96 words
A composition of matter comprising a terpolymer of ethylene/carbon monoxide/acid where the said acid comprises acrylic acid or methacrylic acid, wherein the ethylene comprises an amount in the range of 20% to 98% by weight, the carbon monoxide comprises an amount in the range of 1% to 40% by weight, and the acid comprises 1% to 40% by weight of the total weight, said terpolymer being further characterized as being a substantially uniform, random terpolymer having a melt flow rate, as measured by ASTM D-1238, in the range of about 0.5 to about 2500 g/10 minutes.
Claim 2
Dependent Claim
96 words
A composition of matter comprising a terpolymer of ethylene/carbon monoxide/acid where the said acid comprises acrylic acid or methacrylic acid, wherein the ethylene comprises an amount in the range of 20% to 98% by weight, the carbon monoxide comprises an amount in the range of 1% to 40% by weight, and the acid comprises 1% to 40% by weight of the total weight, said terpolymer being further characterized as being a substantially uniform, random terpolymer having a melt flow rate, as measured by ASTM D-1238, in the range of about 0.5 to about 2500 g/10 minutes.
Claim 3
Dependent Claim
17 words
The terpolymer of claim 1 wherein the acid groups are in the form of a metal salt.
Claim 4
Dependent Claim
25 words
The terpolymer of claim 1 wherein the acid groups are in the form of a metal salt, where the said metal comprises an alkali metal.
Claim 5
Dependent Claim
31 words
The terpolymer of claim 1 wherein the acid gorups are in the form of a metal salt, where the said metal comprises at least one of Li, Na, K, or Rb.
Claim 6
Dependent Claim
11 words
The terpolymer of claim 1 wherein the acid comprises acrylic acid.
Claim 7
Dependent Claim
11 words
The terpolymer of claim 1 wherein the acid comprises methacrylic acid.
Claim 8
Dependent Claim
18 words
The terpolymer of claim 1 when in the form of a layer adhered to at least one substrate.
Claim 9
Dependent Claim
21 words
The terpolymer of claim 1 when in the form of a layer adhered to at least one plastic or resin substrate.
Claim 10
Dependent Claim
31 words
The terpolymer of claim 1 when in the form of a layer adhered to at least one substrate of the group comprising paper, cloth, leather, metal, glass, vitreous material, and wood.
Claim 11
Dependent Claim
21 words
The terpolymer of claim 1 when in the form of an adhesive between substrates, wherein the substrates are of similar material.
Claim 12
Dependent Claim
21 words
The terpolymer of claim 1 when in the form of an adhesive between substrates, wherein the substrates are of dissimilar materials.
Claim 13
Dependent Claim
23 words
The terpolymer of claim 1 when in the form of a layer on a substrate, wherein said substrate has good oxygen barrier properties.
Claim 14
Dependent Claim
49 words
The terpolymer of claim 1 when in the form of a layer on at least one substrate of the group comprising polyvinyl chloride, polyvinylidene chloride, polyethylene terephthalate, polyamide, polypropylene, oriented polypropylene, ethylene/vinyl alcohol copolymer, ethylene/vinyl acetate copolymer, polycarbonate, low density polyethylene, high density polyethylene, and linear low density polyethylene.
Claim 15
Dependent Claim
73 words
The terpolymer of claim 1 wherein the ethylene comprises an amount in the range of about 40% to about 98% by weight, the carbon monoxide comprises an amount in the range of about 1% to about 30% by weight, and the acid comprises about 1% to about 30% by weight of the total weight, and the terpolymer has a melt flow rate in the range of about 1 to about 60 g/10 minutes.
Claim 16
Dependent Claim
73 words
The terpolymer of claim 1 wherein the ethylene comprises an amount in the range of about 60% to about 96% by weight, the carbon monoxide comprises an amount in the range of about 2% to about 20% by weight, and the acid comprises about 2% to about 20% by weight of the total weight, and the terpolymer has a melt flow rate in the range of about 1 to about 20 g/10 minutes.
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) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |