US4987186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive adhesive composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1988-12-21
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Granted: 1991-01-22
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Expires: 2008-12-21
Abstract
Abstract This invention provides a pressure sensitive adhesive composition comprising an acrylic copolymer component (A) which is at least in part an acetoacetyl group-containing acrylic copolymer and at least one curing component (B) selected from the class consisting of isocyanate compounds, epoxy compounds, aldehyde compounds, non-amino resin amine compounds, metal salts, metal alkoxides, metal chelate compounds, ammonium salts and hydrazine compounds. This adhesive composition is well-balanced in the triad of tack, adhesion, cohesion in adhesion technology and can be advantageously used in various applications such as adhesive tapes and labels.
Inventors
- 👤 Mamoru Akiyama
- 👤 Takeshi Matsuyama
- 👤 Yoshiyuki Yanagida
- 👤 Akira Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:50
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/14; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C09J133/06; C09J133/062; C09J175/00; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08G2170/00; C08G2170/40; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
60 words
A curable pressure sensitive adhesive composition comprising, (A) an acrylic copolymer component containing an acetoacetyl group, and (B) a curing component selected from the group consisting of isocyanate compounds, epoxy compounds, aldehyde compounds, non-amino resin amine compounds, metal salts, metal alkoxides, metal chelate compounds, ammonium salts and hydrazine compounds, said composition having an adhesive strength of at least 900 g/inch.
Claim 2
Dependent Claim
60 words
A curable pressure sensitive adhesive composition comprising, (A) an acrylic copolymer component containing an acetoacetyl group, and (B) a curing component selected from the group consisting of isocyanate compounds, epoxy compounds, aldehyde compounds, non-amino resin amine compounds, metal salts, metal alkoxides, metal chelate compounds, ammonium salts and hydrazine compounds, said composition having an adhesive strength of at least 900 g/inch.
Claim 3
Dependent Claim
45 words
A curable pressure sensitive adhesive composition according to claim 1 wherein the acetoacetyl group content of said acetoacetyl group-containing acrylic copolymer is 0.01 to 40 weight percent and the acetoacetyl group content of the whole acrylic copolymer component (A) is 0.01 to 20 weight percent.
Claim 4
Dependent Claim
34 words
A curable pressure sensitive adhesive composition according to claim 1 wherein the proportion of the acetoacetyl group-containing acrylic copolymer relative to the whole acrylic copolymer component (A) is not less than 10 weight percent.
Claim 5
Dependent Claim
44 words
A pressure sensitive adhesive composition according to claim 1 wherein the acetoacetyl group content of said acetoacetyl group-containing acrylic copolymer is 0.01 to 40 weight percent and the acetoacetyl group content of the whole acrylic copolymer component (A) is 0.01 to 20 weight percent.
Claim 6
Dependent Claim
33 words
A pressure sensitive adhesive composition according to claim 1 wherein the proportion of the acetoacetyl group-containing acrylic copolymer relative to the whole acrylic copolymer component (A) is not less than 10 weight percent.
Claim 7
Dependent Claim
30 words
A pressure sensitive adhesive composition according to claim 1 wherein the proportion of said curing component (B) relative to said acrylic copolymer component (A) is 0.001 to 10 weight percent.
References Cited (Backward Citations)
JPS5950166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |