DR. MATTHEW J SNYDER, LPC
Social Work in Romansville, PA
License number
Pennsylvania PC001846
Category
Social Work
Type
Professional
Address
Address
1321 Brownsville Dr, Romansville, PA 19320
Phone
(610) 639-3813
Professional information
Matthew J Snyder, Romansville PA - LPC (Licensed professional counselor)
Specialties:
Counseling
Address:
1321 Brownsville Rd, Romansville 19320
Languages:
English
Non-Hazing Uv Curable Powder Coatings Containing Crystalline Resins
US Patent:
6136882, Oct 24, 2000
Filed:
Jul 8, 1999
Appl. No.:
9/349074
Inventors:
Andrew T. Daly - Sinking Springs PA
Jeno Muthiah - Wernersville PA
Richard P. Haley - Reading PA
Owen H. Decker - Wyomissing PA
Eugene P. Reinheimer - Wyomissing PA
Matthew B. Snyder - Coatesville PA
Jeno Muthiah - Wernersville PA
Richard P. Haley - Reading PA
Owen H. Decker - Wyomissing PA
Eugene P. Reinheimer - Wyomissing PA
Matthew B. Snyder - Coatesville PA
Assignee:
Morton International Inc. - Chicaog IL
International Classification:
C08F 246, C08F 248
US Classification:
522107
Abstract:
This invention provides a UV curable powder coating composition comprising a particulate blend of a non-crystalline unsaturated polyester base resin, a crystalline unsaturated crosslinker resin co-polymerizable with the base resin, and a photoinitiator, that exhibits reduced or eliminated hazing in the cured coating formed therefrom upon being cured at low temperatures demanded by certain heat sensitive substrates. This is accomplished by incorporating in the powder composition a recrystallization or haze inhibitor which is comprised of a crystalline epoxy resin. When this powder blend is melted for curing, the crystalline crosslinker resin visually appears to separate and recrystallize out of the molten powder less completely than it does in the absence of the recrystallization or haze inhibitor. This prevents a visible haze from developing on the surface of the coating upon curing with UV radiation.
Non-Hazing Uv Curable Powder Coatings Containing Crystalline Resins
US Patent:
6011080, Jan 4, 2000
Filed:
Aug 19, 1998
Appl. No.:
9/136184
Inventors:
Andrew T. Daly - Sinking Springs PA
Jeno Muthiah - Wernersville PA
Richard P. Haley - Reading PA
Owen H. Decker - Wyomissing PA
Eugene P. Reinheimer - Wyomissing PA
Matthew B. Snyder - Coatesville PA
Jeno Muthiah - Wernersville PA
Richard P. Haley - Reading PA
Owen H. Decker - Wyomissing PA
Eugene P. Reinheimer - Wyomissing PA
Matthew B. Snyder - Coatesville PA
Assignee:
Morton International, Inc. - Chicago IL
International Classification:
C08F 246
US Classification:
522107
Abstract:
This invention provides a UV curable powder coating composition comprising a particulate blend of a non-crystalline unsaturated polyester base resin, a crystalline unsaturated crosslinker resin co-polymerizable with the base resin, and a photoinitiator, that exhibits reduced or eliminated hazing in the cured coating formed therefrom upon being cured at low temperatures demanded by certain heat sensitive substrates. This is accomplished by incorporating in the powder composition a recrystallization inhibitor which is comprised of a crystalline epoxy resin. When this powder blend is melted for curing, all of the crystalline resin species tend to separate and recrystallize out of the molten powder slower and less completely than they do in the absence of the recrystallization inhibitor. This prevents a visible haze from quickly developing on the surface of the molten coating before the coating can be cured with UV radiation.