US4031058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt sealants
Assignee: EIDP Inc
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Filing: 1975-12-19
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Granted: 1977-06-21
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Expires: 1995-12-19
Abstract
Abstract Hot melt compositions useful as sealants for metal to glass seals containing partially neutralized ethylene/methyl acrylate/maleic acid monoethyl ester copolymer, tackifier, filler, and plasticizer.
Inventors
- 👤 Richard Joseph Cella, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:03
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/28; C08L2666/54; C09J2301/00; C09J2301/30; C09J2301/304
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A hot melt adhesive comprising a. 100 parts by weight of a random ethylene/methyl acrylate/maleic acid monoethyl ester polymer in which polymerized methyl acrylate units are present in the amount of about 50-60 wt. %, in which polymerized maleic acid monoethyl ester units are present in the amount of about 3-5 wt. %, and in which polymerized ethylene units are present in the amount of about 35 to 47 wt. %, the maleic acid monoethyl ester units are from 5 to 50% neutralized with ions selected from the class consisting of sodium ions and potassium ions; b. about 50 to 150 parts by weight of an inorganic filler; c. about 50 to 250 parts by weight of a tackifying resin, and d. about 10 to 50 wt. %, based on the weight of the tackifying resin, of a plasticizer.
Claim 2
Dependent Claim
139 words
A hot melt adhesive comprising a. 100 parts by weight of a random ethylene/methyl acrylate/maleic acid monoethyl ester polymer in which polymerized methyl acrylate units are present in the amount of about 50-60 wt. %, in which polymerized maleic acid monoethyl ester units are present in the amount of about 3-5 wt. %, and in which polymerized ethylene units are present in the amount of about 35 to 47 wt. %, the maleic acid monoethyl ester units are from 5 to 50% neutralized with ions selected from the class consisting of sodium ions and potassium ions; b. about 50 to 150 parts by weight of an inorganic filler; c. about 50 to 250 parts by weight of a tackifying resin, and d. about 10 to 50 wt. %, based on the weight of the tackifying resin, of a plasticizer.
Claim 3
Dependent Claim
44 words
The composition of claim 1 in which the inorganic filler is at least one member selected from the class consisting of carbon black, calcium carbonate, titanium dioxide, clays and silica; the tackifying resin is a thermoplastic hydrocarbon resin; and the plasticizer is chlorinated paraffin.
Claim 4
Dependent Claim
31 words
The composition of claim 1 in which the random ethylene/methyl acrylate/maleic acid monoethyl ester copolymer has a melt index in the range of about 1 to 30 grams per 10 minutes.
Claim 5
Dependent Claim
12 words
The composition of claim 1 in which the filler is carbon black.
Claim 6
Dependent Claim
13 words
The composition of claim 4 in which the plasticizer is a chlorinated paraffin.
Claim 7
Dependent Claim
19 words
The composition of claim 4 in which the ethylene/methyl acrylate/maleic acid monoethyl ester is partially neutralized with sodium ions.
Claim 8
Dependent Claim
23 words
The composition of claim 6 in which the plasticizer is an alkyl-aromatic thermoplastic hydrocarbon resin having a softening point of about 10° C.
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) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |