EP0573142A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pressure-sensitive adhesives
Assignee: Rohm and Haas Co
•
Filing: 1993-04-13
•
Granted: —
•
Expires: 2013-04-13
Abstract
Abstract A pressure-sensitive adhesive having improved shear strength obtained by virtue of the formation of the enamine of a pendant acetoacetate is described. These materials contain acetoacetate functional monomer in a low Tg emulsion polymer. Shear strength is improved without compromise of either peel strength or tack.
Inventors
- 👤 Barry Samuel Snyder
- 👤 Daniel Arthur Bors
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 02:03
CPC Classifications
C; C09; C09J; C09J157/00; C09J157/06; C09J157/12; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C09J133/00; C09J133/04; C09J133/06; C09J133/062; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10S; Y10S526/00; Y10S526/931; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
16 words
A pressure-sensitive adhesive emulsion polymer having a Tg below about 0°C and having pendant enamine groups.
Claim 2
Dependent Claim
38 words
A pressure-sensitive adhesive emulsion polymer having a Tg below about 0°C and having pendant acetoacetate functional groups wherein the pendant acetoacetate groups have been reacted with ammonia or amine to form an enamine, resulting in improved shear strength.
Claim 3
Dependent Claim
25 words
The pressure-sensitive adhesive of claim 2 wherein the amount of acetoacetate functional monomer in the polymer is from about 0.05 to about 10 weight percent.
Claim 4
Dependent Claim
28 words
The pressure-sensitive adhesive of claim 2 or claim 3 wherein the amount of acetoacetate functional monomer in the polymer is from about 0.5 to about 5 weight percent.
Claim 5
Dependent Claim
30 words
The pressure-sensitive adhesive of any one of claims 2 to 4 wherein the amount of acetoacetate functional monomer in the polymer is from about 1 to about 5 weight percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.