U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Acrylic syrup curable to a crosslinked viscoelastomeric material

Patent 5902836 Issued on May 11, 1999. Estimated Expiration Date: Icon_subject August 23, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Re24906

3565247

3575925

3615972

Polyurethane foam-backed pressure-sensitive adhesive tape
Patent #: 3993833
Issued on: 11/23/1976
Inventor: Esmay

Polyhalobenzylic disulfooxonium compounds
Patent #: 4075238
Issued on: 02/21/1978
Inventor: Mark ,   et al.

Acrylic and methacrylic self-adhesive composition and radiation method of making same
Patent #: 4144157
Issued on: 03/13/1979
Inventor: Guse ,   et al.

Acrylic-type pressure sensitive adhesives by means of ultraviolet radiation curing
Patent #: 4181752
Issued on: 01/01/1980
Inventor: Martens ,   et al.

Thin film pattern generation by an inverse self-lifting technique
Patent #: 4181755
Issued on: 01/01/1980
Inventor: Liu ,   et al.

Foam-like pressure-sensitive adhesive tape
Patent #: 4223067
Issued on: 09/16/1980
Inventor: Levens

More ...

Inventors

Application

No. 505350 filed on 08/23/1995

US Classes:

522/8, At least two specified rate-affecting materials containing keto group not part of a ring; or contains a nonspecified photoinitiator or photosensitizer and specified ketone containing material wherein the keto group is not part of a ring522/34, Containing ethylenic unsaturation522/35, Contained in polymeric rate-affecting material, e.g., synthetic resin, etc.522/114, Chemical reactant is ethylenically unsaturated522/121, Chemical reactant has two or more ethylenic groups522/125, Carbon and hyrogen only522/182, Carboxylic acid or derivative522/904, MONOMER OR POLYMER CONTAINS INITIATING GROUP526/328, Derived from an ethylenically unsaturated carboxylic acid526/328.5With additional monomer

Examiners

Primary: Berman, Susan W.

Attorney, Agent or Firm

Foreign Patent References

  • 675420 BE. 05/13/1966
  • 0 281 941 EP. 09/13/1988
  • 0 373 662 EP. 06/13/1990
  • 0 395 987 EP. 11/13/1990
  • 43 03 183 DE. 07/13/1994
  • 58-046236 JP. 03/13/1983
  • 61-083273 JP. 04/13/1986
  • 2-235908 JP. 09/13/1990
  • 2-248482 JP. 10/13/1990
  • 03035075 JP. 02/13/1991
  • 3-250031 JP. 11/13/1991
  • 6-166858 JP. 06/13/1994
  • 6-172729 JP. 06/13/1994
  • 6-200225 JP. 07/13/1994
  • WO 93/09152 WO. 05/13/1993
  • 93/20164 WO. 10/13/1993
  • WO 94/14853 WO. 12/13/1993
  • 94/13750 WO. 06/13/1994

International Classes

C08J 133//08.
133/10

Abstract

Solute polymers in solvent monomers form a coatable syrup that can be cured to a viscoelastomeric material when radiation-sensitive ଱-cleaving groups in either the polymer or one of the monomers are exposed to ultraviolet radiation. The solute polymers can be formed from the solvent monomers in situ or be added thereto to form the syrup.

Other References

  • Aucher, G. et al., "Developing UV-Crosslinkable Acrylic Hot Melt PSAs," Adhesives Age, pp. 20-25, (Jul. 1994)
  • M. Koehler et al., "Coreactive Photoinitiators", pp. 1-5, 198
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