Patent US4672084A successfully refreshed from Google Patents.
US4672084A
Expired / Lapsed
US
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Adhesive for rigid PVC
Assignee: Henkel AG and Co KGaA
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Filing: 1986-04-02
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Granted: 1987-06-09
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Expires: 2006-04-02
Abstract
Abstract An adhesive composition and a method for its use in bonding rigid PVC elements. The adhesive composition comprises: (1) a first dissolved PVC polymer having a K-value of about 58 ± and a second dissolved PVC polymer having a K-value of about 45 to about 52; (2) at least one cyclic organic solvent; and (3) at least one non-cyclic organic solvent.
Inventors
- 👤 Hans-Rolf Dierdorf
- 👤 Juergen Wegner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:56
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J5/125; C09; C09J; C09J127/00; C09J127/02; C09J127/04; C09J127/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08L; C08L2666/00; C08L2666/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
88 words
An additive composition for bonding rigid PVC elements comprising: (1) about 10 to about 30% of (a) first dissolved PVC polymer having a K-value of about 58±1; and (b) second dissolved PVC polymer having a K-value of about 45 to 52; (2) not more than 50% of at least one cyclic organic solvent for said polymers; and (3) the balance q.s. to 100% of at least one non-cyclic organic solvent for said polymers; all percentages being by weight and based upon the total weight of said adhesive composition.
Claim 2
Dependent Claim
88 words
An additive composition for bonding rigid PVC elements comprising: (1) about 10 to about 30% of (a) first dissolved PVC polymer having a K-value of about 58±1; and (b) second dissolved PVC polymer having a K-value of about 45 to 52; (2) not more than 50% of at least one cyclic organic solvent for said polymers; and (3) the balance q.s. to 100% of at least one non-cyclic organic solvent for said polymers; all percentages being by weight and based upon the total weight of said adhesive composition.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein polymer (a) comprises about 40 to about 85% by weight of ingredient (1).
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein polymer (a) comprises about 45 to about 60% by weight of ingredient (1).
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein polymer (a) comprises about 40 to about 50% by weight of ingredient (1).
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein polymer (a) comprises about 50% by weight of ingredient (1).
Claim 7
Dependent Claim
17 words
The composition of claim 1 wherein polymer (b) has a K-value of about 49 to about 50.
Claim 8
Dependent Claim
17 words
The composition of claim 2 wherein polymer (b) has a K-value of about 49 to about 50.
Claim 9
Dependent Claim
17 words
The composition of claim 3 wherein polymer (b) has a K-value of about 49 to about 50.
Claim 10
Dependent Claim
17 words
The composition of claim 5 wherein polymer (b) has a K-value of about 49 to about 50.
Claim 11
Dependent Claim
15 words
The composition of claim 1 wherein ingredient (1) is present in about 20% by weight.
Claim 12
Dependent Claim
15 words
The composition of claim 7 wherein ingredient (1) is present in about 20% by weight.
Claim 13
Dependent Claim
15 words
The composition of claim 8 wherein ingredient (1) is present in about 20% by weight.
Claim 14
Dependent Claim
15 words
The composition of claim 9 wherein ingredient (1) is present in about 20% by weight.
Claim 15
Dependent Claim
30 words
The composition of claim 1 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone, present in a total quantity of from about 30 to about 50% by weight.
Claim 16
Dependent Claim
30 words
The composition of claim 11 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone, present in a total quantity of from about 30 to about 50% by weight.
Claim 17
Dependent Claim
30 words
The composition of claim 12 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone, present in a total quantity of from about 30 to about 50% by weight.
Claim 18
Dependent Claim
30 words
The composition of claim 13 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone, present in a total quantity of from about 30 to about 50% by weight.
Claim 19
Dependent Claim
20 words
The composition of claim 14 wherein said cyclic solvent (2) is present in about 35 to about 45% by weight.
Claim 20
Dependent Claim
24 words
The composition of claim 1 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone, present in a weight ratio of about 1-2.5:1.
Claim 21
Dependent Claim
34 words
The composition of claim 1 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone in a weight ratio of about 1-2.5:1, and is present in about 35 to about 45% by weight.
Claim 22
Dependent Claim
34 words
The composition of claim 11 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone in a weight ratio of about 1-2.5:1, and is present in about 35 to about 45% by weight.
Claim 23
Dependent Claim
34 words
The composition of claim 12 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone in a weight ratio of about 1-2.5:1, and is present in about 35 to about 45% by weight.
Claim 24
Dependent Claim
34 words
The composition of claim 13 wherein said cyclic solvent (2) consists essentially of tetrahydrofuran and cyclohexanone in a weight ratio of about 1-2.5:1, and is present in about 35 to about 45% by weight.
Claim 25
Dependent Claim
13 words
The composition of claim 1 wherein said non-cyclic solvent (3) comprises a ketone.
Claim 26
Dependent Claim
27 words
The composition of claim 1 wherein said non-cyclic solvent (3) comprises: methylethylketone; or a mixture of methylethylketone and dimethyl formamide in a weight ratio of about 4-8:1.
Claim 27
Dependent Claim
27 words
The composition of claim 21 wherein said non-cyclic solvent (3) comprises: methylethylketone; or a mixture of methylethylketone and dimethyl formamide in a weight ratio of about 4-8:1.
Claim 28
Dependent Claim
27 words
The composition of claim 22 wherein said non-cyclic solvent (3) comprises: methylethylketone; or a mixture of methylethylketone and dimethyl formamide in a weight ratio of about 4-8:1.
Claim 29
Dependent Claim
27 words
The composition of claim 23 wherein said non-cyclic solvent (3) comprises: methylethylketone; or a mixture of methylethylketone and dimethyl formamide in a weight ratio of about 4-8:1.
Claim 30
Dependent Claim
122 words
An adhesive composition for bonding rigid PVC elements consisting essentially of: (1) about 10 to about 30% of (a) first dissolved PVC polymer having a K-value of about 58±1; and (b) second dissolved PVC polymer having a K-value of about 49 to 50, wherein polymer (a) comprises about 40 to about 50% by weight of ingredient 1; (2) about 35 to 45% of a cyclic organic solvent consisting essentially of tetrahydrofuran and cyclohexanone present in a weight ratio of 1-2.5:1, and (3) the balance q.s. to 100% of a non-cyclic organic solvent consisting essentially of methylethylketone and dimethyl formamide present in a weight ratio of about 4-8:1, all percentages being by weight and based upon the total weight of said adhesive composition.
Claim 31
Dependent Claim
122 words
An adhesive composition for bonding rigid PVC elements consisting essentially of: (1) about 10 to about 30% of (a) first dissolved PVC polymer having a K-value of about 58±1; and (b) second dissolved PVC polymer having a K-value of about 49 to 50, wherein polymer (a) comprises about 40 to about 50% by weight of ingredient 1; (2) about 35 to 45% of a cyclic organic solvent consisting essentially of tetrahydrofuran and cyclohexanone present in a weight ratio of 1-2.5:1, and (3) the balance q.s. to 100% of a non-cyclic organic solvent consisting essentially of methylethylketone and dimethyl formamide present in a weight ratio of about 4-8:1, all percentages being by weight and based upon the total weight of said adhesive composition.
Claim 32
Dependent Claim
20 words
The composition of claim 1, wherein ingredient (2) is present in an amount of at least about 30% by weight.
References Cited (Backward Citations)
GB596108A
Cited
FR1323247A
Cited
US3372219A
Cited
US3418274A
Cited
US3811980A
Cited
US4014956A
Cited
US4071479A
Cited
US4267084A
Cited
US4298714A
Cited
JPS6051736A
Cited
US4567217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |