Patent US4166873A successfully refreshed from Google Patents.
US4166873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diisocyanate-modified polyesters as hot melt adhesives and coatings
Assignee: BP Corp North America Inc
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Filing: 1977-10-07
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Granted: 1979-09-04
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Expires: 1997-10-07
Abstract
Abstract Diisocyanate-modified polyesters formed by heating 100 parts of a polyester with about 2 to 10 parts of a diisocyante to above about 260 DEG C. are useful as superior hot melt adhesives and as durable coatings.
Inventors
- 👤 Kenneth D. Gilliam
- 👤 Edward E. Paschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:28
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; C09J175/06; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/4211; C08G2150/00; C08G2150/20; C08G2170/00; C08G2170/20; Y; Y10; Y10S; Y10S215/00; Y10S215/06; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/31504; Y10T428/31551; Y10T428/31565; Y10T428/31616; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
108 words
A process for adhering surfaces comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl/g; (b) modifying the polyester by heating the combination above the melt temperature of the polyester and at least above about 260° C. while mixing; (c) placing the modified polyester between the surfaces; (d) compressing the surfaces and modified polyester at a temperature above the softening point of the modified polyester; and (e) cooling the bonded surfaces.
Claim 2
Dependent Claim
108 words
A process for adhering surfaces comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl/g; (b) modifying the polyester by heating the combination above the melt temperature of the polyester and at least above about 260° C. while mixing; (c) placing the modified polyester between the surfaces; (d) compressing the surfaces and modified polyester at a temperature above the softening point of the modified polyester; and (e) cooling the bonded surfaces.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the polyester is poly(ethylene terephthalate).
Claim 4
Dependent Claim
20 words
The process of claim 2 wherein the amount of diisocyanate is about 6 parts per 100 parts of poly(ethylene terephthalate).
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein the diisocyanate is 4,4'-diphenylmethane diisocyanate, 4,4'-diphenylether diisocyanate or dianisidine diisocyanate.
Claim 6
Dependent Claim
11 words
The process of claim 4 wherein the polyester is poly(ethylene terephthalate).
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein the modified polyester is recovered before placing such modified polyester between the surfaces to be bonded.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein the modified polyester is formed in an extruder.
Claim 9
Dependent Claim
14 words
The process of claim 5 wherein the modified polyester is formed in an extruder.
Claim 10
Dependent Claim
10 words
Articles adhesively bonded together by the process of claim 1.
Claim 11
Dependent Claim
63 words
A process for adhering surfaces comprising: (a) coating the surfaces with a diisocyanate; (b) placing a polyester sheet, essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component, between the coated surfaces; (c) heating the coated surfaces and polyester under compression to a temperature at least above about 260° C.; and (d) cooling the bonded surfaces.
Claim 12
Dependent Claim
63 words
A process for adhering surfaces comprising: (a) coating the surfaces with a diisocyanate; (b) placing a polyester sheet, essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component, between the coated surfaces; (c) heating the coated surfaces and polyester under compression to a temperature at least above about 260° C.; and (d) cooling the bonded surfaces.
Claim 13
Dependent Claim
16 words
The process of claim 10 wherein the diisocyanate is 4,4'diphenylmethane diisocyanate, 4,4'-diphenylether diisocyanate or dianisidine diisocyanate.
Claim 14
Dependent Claim
11 words
The process of claim 11 wherein the polyester is poly(ethylene terephthalate).
Claim 15
Dependent Claim
9 words
Articles adhesively bonded using the process of claim 10.
Claim 16
Dependent Claim
64 words
A process for adhering surfaces comprising: (a) coating a polyester sheet with a diisocyanate; (b) placing such a coated polyester sheet, essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component, between the surfaces; (c) heating the surfaces and polyester under compression to a temperature at least above about 260° C.; and (d) cooling the bonded surfaces.
Claim 17
Dependent Claim
64 words
A process for adhering surfaces comprising: (a) coating a polyester sheet with a diisocyanate; (b) placing such a coated polyester sheet, essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component, between the surfaces; (c) heating the surfaces and polyester under compression to a temperature at least above about 260° C.; and (d) cooling the bonded surfaces.
Claim 18
Dependent Claim
16 words
The process of claim 14 wherein the diisocyanate is 4,4'-diphenylmethane diisocyanate, 4,4'-diphenylether diisocyanate or dianisidine diisocyanate.
Claim 19
Dependent Claim
13 words
The process of claim 14 wherein the polyester sheet is an extruded film.
Claim 20
Dependent Claim
12 words
The process of claim 14 wherein the polyester sheet is a fabric.
Claim 21
Dependent Claim
32 words
The process of claim 15 wherein the coated polyester sheet is a poly(ethylene terephthalate) woven fabric coated with from about 2 to 10 parts by weight diisocyanate per 100 parts of polyester.
Claim 22
Dependent Claim
9 words
Articles adhesively bonded using the method of claim 14.
Claim 23
Dependent Claim
110 words
A process for forming a durable resin coating on a substrate comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl/g; (b) modifying the polyester by heating the combination above the melt temperature of the polyester and at least above about 260° C. while mixing; (c) covering the substrate with the modified polyester resin; (d) heating the covered substrate to a temperature sufficient to fuse the resin; and (e) cooling the coated substrate.
Claim 24
Dependent Claim
110 words
A process for forming a durable resin coating on a substrate comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl/g; (b) modifying the polyester by heating the combination above the melt temperature of the polyester and at least above about 260° C. while mixing; (c) covering the substrate with the modified polyester resin; (d) heating the covered substrate to a temperature sufficient to fuse the resin; and (e) cooling the coated substrate.
Claim 25
Dependent Claim
11 words
The process of claim 20 wherein the polyester is poly(ethylene terephthalate).
Claim 26
Dependent Claim
18 words
The process of claim 21 wherein the inherent viscosity of the polyester is about 0.6 to 1.0 dl./g.
Claim 27
Dependent Claim
16 words
The process of claim 22 wherein the diisocyanate is 4,4'-diphenylmethane diisocyanate, 4,4'-diphenylether diisocyanate or dianisidine diisocyanate.
Claim 28
Dependent Claim
10 words
A glass bottle coated using the process of claim 20.
Claim 29
Dependent Claim
91 words
A process for forming a durable resin coating on a substrate comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl./g.; (b) covering the substrate with the resin combination; (c) heating the substrate to a temperature sufficient to fuse the resin and at least above about 260° C.; and (d) cooling the coated substrate.
Claim 30
Dependent Claim
91 words
A process for forming a durable resin coating on a substrate comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl./g.; (b) covering the substrate with the resin combination; (c) heating the substrate to a temperature sufficient to fuse the resin and at least above about 260° C.; and (d) cooling the coated substrate.
Claim 31
Dependent Claim
21 words
The process of claim 25 wherein the polyester is poly(ethylene terephthalate) having an inherent viscosity of about 0.6 to 1.0 dl./g.
Claim 32
Dependent Claim
16 words
The process of claim 26 wherein the diisocyanate is 4,4'-diphenylether diisocyanate, 4,4'-diphenylmethane diisocyanate or dianisidine diisocyanate.
Claim 33
Dependent Claim
10 words
A glass bottle coated using the process of claim 25.
Claim 34
Dependent Claim
89 words
A process for forming a durable resin coating on a substrate comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl./g.; (b) covering the substrate, heated to a temperature sufficient to fuse the resin combination and at least above about 260° C., with the resin combination; and (c) cooling the coated substrate.
Claim 35
Dependent Claim
89 words
A process for forming a durable resin coating on a substrate comprising: (a) combining about 2 to 10 parts by weight of a diisocyanate with 100 parts of a polyester essentially formed from a wholly aromatic diacid or diester component and an aliphatic or cycloaliphatic diol component and having an inherent viscosity of about 0.3 to 1.5 dl./g.; (b) covering the substrate, heated to a temperature sufficient to fuse the resin combination and at least above about 260° C., with the resin combination; and (c) cooling the coated substrate.
Claim 36
Dependent Claim
32 words
The process of claim 29 wherein the polyester is poly(ethylene terephthalate) having an inherent viscosity of about 0.6 to 1.0 dl./g. and the diisocyanate is 4,4'-diphenylmethane diisocyanate, 4,4'-diphenylether diisocyanate or dianisidine diisocyanate.
Claim 37
Dependent Claim
10 words
A glass bottle coated using the process of claim 29.
References Cited (Backward Citations)
GB610140A
Cited
GB684400A
Cited
US2777831A
Cited
GB756076A
Cited
US3115479A
Cited
US2876725A
Cited
US2982754A
Cited
US3097961A
Cited
US3373143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |