US4434261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrudable self-supporting hot melt adhesive sheet
Assignee: EIDP Inc
•
Filing: 1982-08-06
•
Granted: 1984-02-28
•
Expires: 2002-08-06
Abstract
Abstract Extrudable, self-supporting, nonblocking hot melt adhesive sheet is obtained by blending about 10-50% by weight of an ethylene interpolymer, such as ethylene/vinyl ester, ethylene/unsaturated mono- or dicarboxylic acids or esters of said unsaturated acids, etc.; 2-30% by weight of a plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers, polyether esters and combinations thereof; about 20-80% by weight of filler; from 0 to about 10% by weight of at least one additive, such as organic acids, organic acid derivatives and surface active agents.
Inventors
- 👤 Edward G. Brugel
- 👤 Walter Yllo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:32
CPC Classifications
C; C09; C09J; C09J173/00; C09J11/00; C09J11/02; C09J11/04; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C09J7/00; C09J7/10; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/54
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
282 words
An extrudable self-supporting hot melt adhesive sheet which is nonadhesive at room temperature but is adhesive at about 150° F., is self-supporting at about 200°-350° F. and has a melt index of from about 10 to about 500, said sheet comprising (a) from about 10 to about 50% by weight of at least one copolymer of ethylene with at least one comonomer selected from the group consisting of vinyl esters of saturated carboxylic acids wherein the acid moiety has up to 4 carbon atoms, unsaturated mono- and dicarboxylic acids of 3 to 5 carbon atoms, salts of said unsaturated acids, and esters of said unsaturated acids wherein the alcohol moiety has 1 to 8 carbon atoms, the ethylene content of said copolymer being from about 40 to about 95% by weight, the comonomer content of said copolymer being from about 5 to about 60% by weight, and the melt index of said copolymer or combination of copolymers being such that would result in a melt index of from about 10 to about 500 for the fully compounded adhesive, provided that when said copolymer of ethylene is an ethylene/vinyl ester or ethylene/unsaturated mono- or dicarboxylic acid ester copolymer said copolymer can contain up to about 15 percent by weight of carbon monoxide or sulfur dioxide; (b) from 2 to about 30 percent by weight of at least one plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers, and polyether esters; (c) from about 20 to about 80% by weight of filler; (d) from 0 to about 10% by weight of at least one additive selected from the group consisting of organic acids, organic acid derivatives and surface active agents.
Claim 2
Dependent Claim
282 words
An extrudable self-supporting hot melt adhesive sheet which is nonadhesive at room temperature but is adhesive at about 150° F., is self-supporting at about 200°-350° F. and has a melt index of from about 10 to about 500, said sheet comprising (a) from about 10 to about 50% by weight of at least one copolymer of ethylene with at least one comonomer selected from the group consisting of vinyl esters of saturated carboxylic acids wherein the acid moiety has up to 4 carbon atoms, unsaturated mono- and dicarboxylic acids of 3 to 5 carbon atoms, salts of said unsaturated acids, and esters of said unsaturated acids wherein the alcohol moiety has 1 to 8 carbon atoms, the ethylene content of said copolymer being from about 40 to about 95% by weight, the comonomer content of said copolymer being from about 5 to about 60% by weight, and the melt index of said copolymer or combination of copolymers being such that would result in a melt index of from about 10 to about 500 for the fully compounded adhesive, provided that when said copolymer of ethylene is an ethylene/vinyl ester or ethylene/unsaturated mono- or dicarboxylic acid ester copolymer said copolymer can contain up to about 15 percent by weight of carbon monoxide or sulfur dioxide; (b) from 2 to about 30 percent by weight of at least one plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers, and polyether esters; (c) from about 20 to about 80% by weight of filler; (d) from 0 to about 10% by weight of at least one additive selected from the group consisting of organic acids, organic acid derivatives and surface active agents.
Claim 3
Dependent Claim
139 words
The hot melt adhesive sheet of claim 1 having a melt index of from about 20 to about 200 wherein (a) said copolymer of ethylene is present in an amount of from about 30 to about 40 percent by weight, the ethylene content of said copolymer being from about 45 to about 91% by weight, the comonomer content of said copolymer being from about 9 to about 55 percent by weight and the melt index of said copolymer or combination of copolymers being such that would result in a melt index of from about 20 to about 200 for the fully compounded adhesive; (b) said plasticizer is present in an amount of from about 10 to about 20 percent by weight; (c) said filler is present in an amount of from about 40 to about 70 percent by weight.
Claim 4
Dependent Claim
55 words
The hot melt adhesive sheet of claim 2 wherein said filler is selected from the group consisting of calcium carbonate, barium sulfate, hydrated alumina, clay, magnesium carbonate, calcium sulfate, silica, iron, lead, or oxides thereof, mica, talc and wollastonite, flyash, cement dust, yarns, wood flour, wood fiber, nut shells, ground rice hulls and mixtures thereof.
Claim 5
Dependent Claim
101 words
The hot melt adhesive sheet of claim 3 wherein said copolymer of ethylene is selected from the group consisting of ethylene/vinyl acetate, ethylene/acrylic acid and its ionomers, ethylene/methacrylic acid and its ionomers, ethylene/methyl acrylate, ethylene/ethyl acrylate, ethylene/isobutyl acrylate, ethylene/normal butyl acrylate, ethylene/isobutyl acrylate/methacrylic acid and its ionomers, ethylene/normal butyl acrylate/methacrylic acid and its ionomers, ethylene/isobutyl acrylate/acrylic acid and its ionomers, ethylene/normal butyl acrylate/acrylic acid and its ionomers, ethylene/methyl methacrylate, ethylene/vinyl acetate/methacrylic acid and its ionomers, ethylene/vinyl acetate/acrylic acid and its ionomers, ethylene/vinyl acetate/carbon monoxide, ethylene/methyl acrylate/carbon monoxide, ethylene/normal butyl acrylate/carbon monoxide, ethylene/isobutyl acrylate/carbon monoxide, ethylene/vinyl acetate/monoethyl maleate and ethylene/methyl acrylate/monoethyl maleate.
Claim 6
Dependent Claim
140 words
The hot melt adhesive sheet of claim 4, having a melt index of from about 40 to about 100 wherein (a) said copolymer of ethylene is present in an amount of from about 25 to about 35 percent by weight; the ethylene content of said copolymer being from about 72 to about 88 percent by weight, the comonomer content of said copolymer being from about 12 to about 28 percent by weight, and the melt index of said copolymer or combination of copolymers being such that would result in a melt index of from about 40 to about 100 for the fully compounded adhesive; (b) said plasticizer is present in an amount of from about 12 to about 18 percent by weight; (c) said filler is present in an amount of from about 50 to about 60 percent by weight.
Claim 7
Dependent Claim
27 words
The hot melt adhesive sheet of claim 5 wherein said filler is selected from the group consisting of calcium carbonate, barium sulfate, hydrated alumina, and mixtures thereof.
Claim 8
Dependent Claim
30 words
The hot melt adhesive sheet of claim 6 wherein said copolymer of ethylene is selected from the group consisting of ethylene/vinyl acetate, ethylene/methyl acrylate, ethylene/isobutyl acrylate, and ethylene/vinyl acetate/methacrylic acid.
Claim 9
Dependent Claim
16 words
The hot melt adhesive sheet of claim 1 wherein said copolymer of ethylene is a terpolymer.
Claim 10
Dependent Claim
32 words
The hot melt adhesive sheet of claim 8 wherein at least one monomer of said terpolymer is selected from the group consisting of unsaturated monocarboxylic acids of 3 to 5 carbon atoms.
Claim 11
Dependent Claim
28 words
The hot melt adhesive sheet of claim 9 wherein at least one monomer of said terpolymer is selected from the group consisting of acrylic acid and methacrylic acid.
Claim 12
Dependent Claim
25 words
The hot melt adhesive sheet of claim 10 wherein said terpolymer is selected from the group consisting of ethylene/vinyl acetate/methacrylic acid and ethylene/vinyl acetate/acrylic acid.
Claim 13
Dependent Claim
19 words
The hot melt adhesive sheet of claim 8 wherein one of the monomers of said terpolymer is carbon monoxide.
Claim 14
Dependent Claim
26 words
The hot melt adhesive sheet of claim 12 wherein said terpolymer is selected from the group consisting of ethylene/vinyl acetate/carbon monoxide and ethylene/normal butyl acrylate/carbon monoxide.
Claim 15
Dependent Claim
27 words
The hot melt adhesive sheet of claims 1, 8, 9, 10, 11, 12 or 13 wherein said copolymer is a mixture of two or more ethylene copolymers.
Claim 16
Dependent Claim
49 words
The hot melt adhesive sheet of claim 11 wherein said terpolymer is a mixture of (α) an about 74/25/1 terpolymer of ethylene/vinyl acetate/methacrylic acid having a melt index of about 500 and (β) and an about 71/28/1 terpolymer of ethylene/vinyl acetate/methacrylic acid having a melt index of about 6.
Claim 17
Dependent Claim
34 words
The hot melt adhesive sheet of claim 15 wherein terpolymer (α) is present in an amount of about 9% by weight and terpolymer (β) is present in an amount of about 21% by weight.
References Cited (Backward Citations)
US3484405A
Cited
US4174325A
Cited
US4180490A
Cited
US4219453A
Cited
US4160751A
Cited
US4191798A
Cited
US4222924A
Cited
US4263196A
Cited
GB2067576B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |