Acrylic-type pressure sensitive adhesives by means of ultraviolet radiation curing

Patent 4181752 Issued on January 1, 1980. Estimated Expiration Date:

September 25, 1998. 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.

Abstract Claims Description Full Text

Patent References

2884126

3328194

3661618

3725115

3729338

3840448

Inventors

Application

No. 05/945406 filed on 09/25/1978

US Classes:

427/516, Coating is adhesive or is intended to be made adhesive (e.g., release sheet or coating, etc.)427/208.4, Pressure sensitive adhesive427/517, Coating includes specified rate affecting material428/355AC, Including addition polymer from alpha-beta unsaturated carboxylic acid (e.g., acrylic acid, methacrylic acid, etc.) or derivative thereof428/355CN, Including nitrogen containing polymer (e.g., polyacrylonitrile, polymethacrylonitrile, etc.)428/483, Next to addition polymer from unsaturated monomers428/508, Regenerated or modified cellulose522/175, Acrylamide or methacrylamide522/182, Carboxylic acid or derivative522/913, NUMERICALLY SPECIFIED DISTINCT WAVELENGTH526/264, Lactam monomer526/318.4, With ester monomer526/931PRESSURE SENSITIVE ADHESIVE

Examiners

Primary: Turer, Richard B.

Attorney, Agent or Firm

International Classes

C09J 4/00 (20060101)
C09J 7/02 (20060101)
C08F 20/18 (20060101)
C08F 2/46 (20060101)
C08F 20/00 (20060101)

Abstract

Process for the preparation of a normally-tacky pressure-sensitive adhesive which comprises subjecting a solventless radiation-sensitive acrylate-containing polymerizable mass to radiation in the near UV region, at a rate of from about 0.1 to 7 milliwatts per square centimeter of the mass exposed.