US3909466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive compositions of NCO-terminated prepolymer and rubber
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1972-06-28
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Granted: 1975-09-30
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Expires: 1992-06-28
Abstract
Abstract An adhesive composition having a long pot life and strong adhesive properties comprising (A) omega , omega ''diisocyanatodimethylcyclohexane, its polymer or NCO-terminated prepolymer and (B) natural rubber, synthetic rubber or a high molecular weight polyol.
Inventors
- 👤 Yutaka Matsui
- 👤 Seiji Kazama
- 👤 Masamitsu Nakabayashi
- 👤 Koji Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:31
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/28; C08G18/67; C08G18/69; C08G18/74; C08G18/75; C08G18/751; C08G18/752; C08G18/757; C08G18/80; C08G18/8003; C08G18/8061; C08G18/807; C08G18/808; C09; C09J; C09J175/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
64 words
AN ADHESIVE COMPOSITION WHICH COMPRISES AN NCO-TERMAINTED PREPOLYMER PREPARED BY REACTING W,W''-DIISOCYANATODIMETHYLCYCLOHEXANE WITH AN ACTIVE HYDROGEN-CONTAINING COMPOUND HAVING A MOLECULAR WEIGHT OF ABOUT 60 TO ABOUT 500 IN A RATIO OF NCO GROUPS TO OH GROUPS OF NOT LESS THAN ABOUT 1.5 AND A CONJUGATED DIENE RUBBER, WHEREIN THE WEIGHT RATIO OF THE NCO-TERMINATED PREPOLYMER TO THE RUBBER IS ABOUT 1/10 TO ABOUT 1/200.
Claim 2
Dependent Claim
64 words
AN ADHESIVE COMPOSITION WHICH COMPRISES AN NCO-TERMAINTED PREPOLYMER PREPARED BY REACTING W,W''-DIISOCYANATODIMETHYLCYCLOHEXANE WITH AN ACTIVE HYDROGEN-CONTAINING COMPOUND HAVING A MOLECULAR WEIGHT OF ABOUT 60 TO ABOUT 500 IN A RATIO OF NCO GROUPS TO OH GROUPS OF NOT LESS THAN ABOUT 1.5 AND A CONJUGATED DIENE RUBBER, WHEREIN THE WEIGHT RATIO OF THE NCO-TERMINATED PREPOLYMER TO THE RUBBER IS ABOUT 1/10 TO ABOUT 1/200.
Claim 3
Dependent Claim
23 words
An adhesive composition claimed in claim 1, wherein the ratio of the NCO-terminated prepolymer to the rubber is about 1/15 to about 1/100.
Claim 4
Dependent Claim
17 words
An adhesive composition claimed in claim 1, wherein the active hydrogen-containing compound is saturated or unsaturated glycol.
Claim 5
Dependent Claim
23 words
An adhesive composition claimed in claim 1 wherein the active hydrogen-containing compound is a polyol having 3 to 8 OH groups per molecule.
Claim 6
Dependent Claim
13 words
An adhesive composition claimed in claim 1, wherein the rubber is natural rubber.
Claim 7
Dependent Claim
14 words
An adhesive composition claimed in claim 1, wherein the rubber is a synthetic rubber.
Claim 8
Dependent Claim
42 words
An adhesive composition claimed in claim 6, wherein the synthetic rubber is a polymer or copolymer which is prepared by polymerization or copolymerization of a diene-type compound having a conjugated double bond and having 4 to 10 carbon atoms in its molecule.
Claim 9
Dependent Claim
25 words
An adhesive composition claimed in claim 7, wherein the diene compound is a member selected from the group consisting of a butadiene, isoprene and chloroprene.
Claim 10
Dependent Claim
29 words
An adhesive composition claimed in claim 7, wherein the monomer copolymerizable with the diene compound is that having a double bond and 4 to 16 carbon atoms per molecule.
Claim 11
Dependent Claim
29 words
An adhesive composition claimed in claim 9, wherein the monomer copolymerizable with the diene compound is a member selecTed from the group consisting of styrene, acrylonitrile, butylene and isobutylene.
Claim 12
Dependent Claim
20 words
An adhesive composition claimed in claim 10, wherein the molecular weight of synthetic rubber is about 20,000 to about 200,000.
Claim 13
Dependent Claim
15 words
An adhesive composition claimed in claim 6, wherein the synthetic rubber is a styrene-butadiene rubber.
Claim 14
Dependent Claim
15 words
An adhesive composition claimed in claim 6, wherein the synthetic rubber is a butadiene rubber.
Claim 15
Dependent Claim
15 words
An adhesive composition claimed in claim 6, wherein the synthetic rubber is a nitrile rubber.
Claim 16
Dependent Claim
15 words
An adhesive composition claimed in claim 6, wherein the synthetic rubber is a chloroprene rubber.
Claim 17
Dependent Claim
15 words
An adhesive composition claimed in claim 6, wherein the synthetic rubber is an isoprene rubber.
Claim 18
Dependent Claim
15 words
An adhesive composition claimed in claim 6, wherein the synthetic rubber is a butyl rubber.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |