US4346189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agent for forming cleaner cutting pressure sensitive adhesives
Assignee: Morgan Adhesives Co
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Filing: 1980-07-14
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Granted: 1982-08-24
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Expires: 2000-07-14
Abstract
Abstract A pressure sensitive adhesive composition comprising the solids deposited from a mixture of solvents, synthetic rubber and tackifiers and also including a polysiloxane additive in about 6 to 10 percent of the resultant composition, which composition has reduced edge ooze or flow when on sheets subjected to a cutting action.
Inventors
- 👤 Jacques J. Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:19
CPC Classifications
C; C09; C09J; C09J121/00; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/14; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
104 words
A pressure sensitive adhesive composition comprising the solids deposited from a mixture of synthetic rubber, and tackifiers and also including a silicone additive in the amounts of from about 6 to 10 percent of the resultant composition and where the silicone is a polysiloxane that has the formula of; ##STR3## and where R is either a methyl, a phenyl, a vinyl or a silicon bounded hydrogen group and R' is selected from the group consisting of either a methyl, or a hydroxyl group, and N is from 16 to 150, and the viscosity of said polysiloxane is from about 20 to about 350 centistokes.
Claim 2
Dependent Claim
104 words
A pressure sensitive adhesive composition comprising the solids deposited from a mixture of synthetic rubber, and tackifiers and also including a silicone additive in the amounts of from about 6 to 10 percent of the resultant composition and where the silicone is a polysiloxane that has the formula of; ##STR3## and where R is either a methyl, a phenyl, a vinyl or a silicon bounded hydrogen group and R' is selected from the group consisting of either a methyl, or a hydroxyl group, and N is from 16 to 150, and the viscosity of said polysiloxane is from about 20 to about 350 centistokes.
Claim 3
Dependent Claim
65 words
A pressure sensitive adhesive composition comprising the solids deposited from a mixture principally formed of synthetic rubber, and tackifiers but also including and being characterized by a polysiloxane additive in the amounts of from about 6 to 10 percent of the resultant composition, the polysiloxane being a dimethyl silicone oil having a viscosity from about 20 to about 350 centistokes at 77° F. (25° C.).
Claim 4
Dependent Claim
65 words
A pressure sensitive adhesive composition comprising the solids deposited from a mixture principally formed of synthetic rubber, and tackifiers but also including and being characterized by a polysiloxane additive in the amounts of from about 6 to 10 percent of the resultant composition, the polysiloxane being a dimethyl silicone oil having a viscosity from about 20 to about 350 centistokes at 77° F. (25° C.).
Claim 5
Dependent Claim
15 words
A pressure sensitive adhesive as in claim 1 where n varies from 135 to 150.
Claim 6
Dependent Claim
22 words
A pressure sensitive adhesive as in claim 2, where the dimethyl silicone oil has a viscosity of about 350 at 25° C.
Claim 7
Dependent Claim
52 words
A pressure sensitive adhesive composition as in claim 4, where the polysiloxane is a dimethyl silicone oil with the formula of: ##STR4## and where R is a methyl, group and R' is selected from the group consisting of either a methyl, or a hydroxyl group, and n is between 135 and 150.
Claim 8
Dependent Claim
19 words
A pressure sensitive adhesive as in claim 3, wherein said R' is methyl and wherein said R is methyl.
Claim 9
Dependent Claim
16 words
A pressure sensitive adhesive composition as in claim 6, wherein said viscosity is about 350 centistokes.
Claim 10
Dependent Claim
17 words
A pressure sensitive adhesive composition as in claim 7, wherein said polysiloxane is a dimethyl silicone oil.
Claim 11
Dependent Claim
30 words
A pressure sensitive adhesive composition as in claims 1, 3, 6, 7 or 8, wherein said polysiloxane has a weight average molecular weight of from about 10,000 to about 11,000.
Claim 12
Dependent Claim
28 words
A pressure sensitive adhesive composition as in claim 2, 4 or 5, where said polysiloxane has a weight average molecular weight of from about 10,000 to about 11,000.
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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |