Patent US4821824A successfully refreshed from Google Patents.
Patent US4631308A successfully refreshed from Google Patents.
US4631308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive and coating composition
Assignee: Dow Chemical Co
•
Filing: 1985-05-20
•
Granted: 1986-12-23
•
Expires: 2005-05-20
Abstract
Abstract A hot melt adhesive and coating composition is provided comprising a copolymer of ethylene and acrylic acid or methacrylic acid; a compatible wax and a tackifier. The copolymer characterized as having a melt flow of at least about 0.77 and an acrylic acid or methacrylic acid content such that the copolymer has an acid number ranging from about 8 to about 93.
Inventors
- 👤 Stephen L. Graham
- 👤 David O. Plunkett
- 👤 Robert S. Lacey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:53
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
175 words
A hot melt adhesive and coating composition comprising: a normally solid ethylene-acrylic acid or methacrylic acid copolymer characterized as falling within the boundries defined by Points A, B, D and E of the trapezoidal figure set forth in the Drawing, wherein Points A, B, D and E represent the following characteristics of the copolymer; A, a copolymer having an acid number of about 23 and a flow rate of about 0.77; B, a copolymer having an acid number of about 93 and a flow rate of about 69; D, a copolymer having an acid number of about 8 and a flow rate of about 69; and E, a copolymer having an acid number of about 8 and a flow rate of about 0.77; a compatable wax from about 10 to about 40 percent by weight and a compatable tackifier from about 10 to about 40 percent by weight wherein the composition is characterized by limited separation for at least about 24 hours when maintained at a temperature of about 120° C. to about 232° C.
Claim 2
Dependent Claim
175 words
A hot melt adhesive and coating composition comprising: a normally solid ethylene-acrylic acid or methacrylic acid copolymer characterized as falling within the boundries defined by Points A, B, D and E of the trapezoidal figure set forth in the Drawing, wherein Points A, B, D and E represent the following characteristics of the copolymer; A, a copolymer having an acid number of about 23 and a flow rate of about 0.77; B, a copolymer having an acid number of about 93 and a flow rate of about 69; D, a copolymer having an acid number of about 8 and a flow rate of about 69; and E, a copolymer having an acid number of about 8 and a flow rate of about 0.77; a compatable wax from about 10 to about 40 percent by weight and a compatable tackifier from about 10 to about 40 percent by weight wherein the composition is characterized by limited separation for at least about 24 hours when maintained at a temperature of about 120° C. to about 232° C.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the copolymer is an ionomer.
Claim 4
Dependent Claim
174 words
A hot melt adhesive and coating composition comprising: an ethylene-acrylic acid or methacrylic acid copolymer characterized as falling within the boundaries defined by Points A, C, D and E of the trapezoidal figure set forth in the Drawing wherein Points A, C, D, and E represent the following characteristics of the copolymer; A, a copolymer having an acid number of about 23 and a flow rate of about 0.77; C, a copolymer having an acid number of about 65 and a flow rate of about 69; Point D, a copolymer having an acid number of about 8 and a flow rate of about 69; and E, a copolymer having an acid number of about 8 and a flow rate of about 0.77; a compatable wax from about 10 to about 40 percent by weight and a compatable tackifier from about 10 to about 40 percent by weight, wherein the composition is characterized by limited separation for at least about 24 hours when maintained at a temperature of about 120° C. to about 232° C.
Claim 5
Dependent Claim
174 words
A hot melt adhesive and coating composition comprising: an ethylene-acrylic acid or methacrylic acid copolymer characterized as falling within the boundaries defined by Points A, C, D and E of the trapezoidal figure set forth in the Drawing wherein Points A, C, D, and E represent the following characteristics of the copolymer; A, a copolymer having an acid number of about 23 and a flow rate of about 0.77; C, a copolymer having an acid number of about 65 and a flow rate of about 69; Point D, a copolymer having an acid number of about 8 and a flow rate of about 69; and E, a copolymer having an acid number of about 8 and a flow rate of about 0.77; a compatable wax from about 10 to about 40 percent by weight and a compatable tackifier from about 10 to about 40 percent by weight, wherein the composition is characterized by limited separation for at least about 24 hours when maintained at a temperature of about 120° C. to about 232° C.
Claim 6
Dependent Claim
11 words
The composition of claim 3 wherein the copolymer is an ionomer.
Claim 7
Dependent Claim
13 words
A laminate comprising two substrates bonded together with the composition of claim 1.
Claim 8
Dependent Claim
13 words
A laminate comprising two substrates bonded together with the composition of claim 3.
Claim 9
Dependent Claim
57 words
A method of bonding two substrates together which comprises applying to the surface of at least one first substrate, the composition of claim 1 at a temperature ranging from about 93° to about 232° C., compressing to the first substrate in contact with the hot melt adhesive a second substrate and permitting the substrates to become bonded.
Claim 10
Dependent Claim
11 words
The method of claim 7 wherein the copolymer is an ionomer.
Claim 11
Dependent Claim
58 words
A method of bonding two substrates together which comprises: applying to the surface of at least one first substrate, the composition of claim 3 at a temperature ranging from about 93° to about 232° C., compressing to the first substrate in contact with the hot melt adhesive composition a second substrate and permitting the substrates to become bonded.
Claim 12
Dependent Claim
11 words
The method of claim 9 wherein the copolymer is an ionomer.
Claim 13
Dependent Claim
12 words
The method of claim 9 wherein the substrates are of like materials.
Claim 14
Dependent Claim
12 words
The method of claim 9 wherein the substrates are of dislike materials.
Claim 15
Dependent Claim
18 words
A laminate comprising a solid substrate having bonded thereto a uniform layer of the composition of claim 3.
Claim 16
Dependent Claim
18 words
A laminate comprising a solid substrate having bonded thereto a uniform layer of the composition of claim 4.
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) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |