US5284891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tackifiers and their use in pressure sensitive adhesives
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1991-08-14
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Granted: 1994-02-08
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Expires: 2011-08-14
Abstract
Abstract Resins having a softening point from 10 DEG C. to 120 DEG C. especially 10 DEG C. to 80 DEG C. being a copolymer of a feed which is predominantly C5 olefines and diolefines and 10 to 60 wt. % of one or more monovinyl aromatic compounds are used as a tackifier for acrylic polymers or copolymers particularly in aqueous based pressure sensitive adhesives.
Inventors
- 👤 Guy Wouters
- 👤 Lutz E. Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:41
CPC Classifications
C; C08; C08F; C08F240/00; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A pressure sensitive adhesive polyacrylate latex emulsion comprising form 30% to 85% by weight on a dry basis of a polyacrylate and from 15% to 70% by weight on a dry basis of a tackifier resin having a softening point from 10° C. to 120° C. and being a copolymer of a feed which is predominantly C 5 olefins and diolefins and one or more monovinyl aromatic compounds, said resin containing from 10 to 60 wt. % of the monovinyl aromatic compound.
Claim 2
Dependent Claim
82 words
A pressure sensitive adhesive polyacrylate latex emulsion comprising form 30% to 85% by weight on a dry basis of a polyacrylate and from 15% to 70% by weight on a dry basis of a tackifier resin having a softening point from 10° C. to 120° C. and being a copolymer of a feed which is predominantly C 5 olefins and diolefins and one or more monovinyl aromatic compounds, said resin containing from 10 to 60 wt. % of the monovinyl aromatic compound.
Claim 3
Dependent Claim
36 words
A pressure sensitive adhesive according to claim 1 in which the tackifier resin has a softening point from 10° C. to 80° C. and contains from 10 to 60 wt. % of the monovinyl aromatic compound.
Claim 4
Dependent Claim
24 words
A pressure sensitive adhesive according to claim 1 in which the resin contains from 10 to 25 wt. % of the monovinyl aromatic compound.
Claim 5
Dependent Claim
16 words
A pressure sensitive adhesive according to claim 1 in which the monovinyl aromatic compound is styrene.
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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) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |