US4049602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
White non-pigmented hot melt polyolefin adhesives
Assignee: Eastman Chemical Co
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Filing: 1976-02-17
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Granted: 1977-09-20
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Expires: 1996-02-17
Abstract
Abstract Hot melt polyolefin adhesives are provided having white color. These adhesives contain a white, non-pigmented polymeric composition prepared by polymerizing styrene in the presence of an amorphous polyalpha-olefin.
Inventors
- 👤 Kenneth H. Albers
- 👤 Robert E. Holliday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:36
CPC Classifications
C; C09; C09J; C09J151/00; C09J151/06; C08; C08F; C08F255/00; C09J123/00; C09J123/02; C08L; C08L2666/00; C08L2666/02; C08L2666/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
114 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of styrenated amorphous polyolefin having a styrene content of about 1 to 90 percent by weight and a melt viscosity at 190° C. of at least 10 centipoise prepared by polymerizing styrene in the presence of an amorphous polyolefin having a melt viscosity at 190° C. of from about 100 to about 500,000 centipoise with a peroxide catalyst at a temperature of about 160° C. to about 300° C. and about 10 to 50 weight percent of the adhesive composition of at least one tackifying resin selected from the group consisting of hydrocarbon resins, polyterpene resins and rosin esters.
Claim 2
Dependent Claim
114 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of styrenated amorphous polyolefin having a styrene content of about 1 to 90 percent by weight and a melt viscosity at 190° C. of at least 10 centipoise prepared by polymerizing styrene in the presence of an amorphous polyolefin having a melt viscosity at 190° C. of from about 100 to about 500,000 centipoise with a peroxide catalyst at a temperature of about 160° C. to about 300° C. and about 10 to 50 weight percent of the adhesive composition of at least one tackifying resin selected from the group consisting of hydrocarbon resins, polyterpene resins and rosin esters.
Claim 3
Dependent Claim
36 words
An adhesive composition according to claim 1 wherein said styrenated amorphous polyolefin is a member of the group consisting of (1) styrenated amorphous polypropylene or (2) styrenated amorphous propylene-alpha-monoolefin copolymer, or mixtures of (1) and (2).
Claim 4
Dependent Claim
14 words
An adhesive composition according to claim 1 wherein said tackifying resin is hydrocarbon resin.
Claim 5
Dependent Claim
141 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of 90 to 50 percent by weight of a mixture of (1) 5 to 90 percent by weight styrenated amorphous polyolefin having a styrene content of about 1 to 90 percent by weight prepared by polymerizing styrene in the presence of an amorphous polyolefin having a melt viscosity at 190° C. of from about 100 to about 500,000 centipoise with a peroxide catalyst at a temperature of about 160° C. to about 300° C., (2) 5 to 85 percent by weight essentially noncrystalline hexane soluble polyolefin having a melt viscosity at 190° C. of about 100 to about 500,000 centipoise and 10 to 50 percent by weight of at least one tackifying resin selected from the group consisting of hydrocarbon resins, polyterpene resins and rosin esters.
Claim 6
Dependent Claim
141 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of 90 to 50 percent by weight of a mixture of (1) 5 to 90 percent by weight styrenated amorphous polyolefin having a styrene content of about 1 to 90 percent by weight prepared by polymerizing styrene in the presence of an amorphous polyolefin having a melt viscosity at 190° C. of from about 100 to about 500,000 centipoise with a peroxide catalyst at a temperature of about 160° C. to about 300° C., (2) 5 to 85 percent by weight essentially noncrystalline hexane soluble polyolefin having a melt viscosity at 190° C. of about 100 to about 500,000 centipoise and 10 to 50 percent by weight of at least one tackifying resin selected from the group consisting of hydrocarbon resins, polyterpene resins and rosin esters.
Claim 7
Dependent Claim
36 words
An adhesive composition according to claim 4 wherein said styrenated amorphous polyolefin is a member of the group consisting of (1) styrenated amorphous polypropylene or (2) styrenated amorphous propylene-alpha-monoolefinic copolymer, or mixtures of (1) and )2).
Claim 8
Dependent Claim
33 words
An adhesive composition according to claim 5 wherein said amorphous polyolefin is a member of the group consisting of (1) amorphous polypropylene, or (2) amorphous propylene-alpha-monoolefinic copolymer, or mixtures of (1) and (2).
Claim 9
Dependent Claim
14 words
An adhesive composition according to claim 6 wherein said tackifying resin is hydrocarbon resin.
Claim 10
Dependent Claim
92 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (1) 10 to 20 percent by weight styrenated amorphous polyolefin containing 30 to 70 weight percent styrene prepared by polymerizing styrene in the presence of an amorphous polyolefin having a melt viscosity at 190° C. of from about 100 to about 500,000 centipoise with a peroxide catalyst at a temperature of about 160° C. to about 300° C., (2) 50 to 70 weight percent amorphous polyolefin, and (3) 20 to 30 weight percent hydrocarbon tackifying resin.
Claim 11
Dependent Claim
92 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (1) 10 to 20 percent by weight styrenated amorphous polyolefin containing 30 to 70 weight percent styrene prepared by polymerizing styrene in the presence of an amorphous polyolefin having a melt viscosity at 190° C. of from about 100 to about 500,000 centipoise with a peroxide catalyst at a temperature of about 160° C. to about 300° C., (2) 50 to 70 weight percent amorphous polyolefin, and (3) 20 to 30 weight percent hydrocarbon tackifying resin.
Claim 12
Dependent Claim
16 words
An adhesive composition according to Claim 8 wherein said styrenated amorphous polyolefin is styrenated amorphous polypropylene.
Claim 13
Dependent Claim
14 words
An adhesive composition according to claim 9 wherein said amorphous polyolefin is amorphous polypropylene.
Claim 14
Dependent Claim
16 words
An adhesive composition according to claim 10 wherein said hydrocarbon tackifying resin is DAC-B hydrocarbon resin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |