Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-03-14
2006-03-14
Seidleck, James J. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S089000, C525S316000, C525S380000, C525S338000, C525S258000
Reexamination Certificate
active
07012118
ABSTRACT:
The present invention relates to a photopolymerizable composition, which comprises:(a) a block copolymer component comprising an unhydrogenated styrene diene block copolymer and a hydrogenated controlled distribution styrene diene block copolymer(b) one or more photopolymerizable ethylenically unsaturated low molecular weight compounds,(c) one or more polymerization initiators, and optionally(d) from 0 to 40% by weight, based on the total photopolymerizable compositions, of one or more auxiliaries.The invention also includes flexographic printing plates derived from said photopolymerizable compositions, and flexographic printing relief forms prepared from said plates.
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Yih-Chau Lin et al: “Using Heavy Ethers as Structire Modifiers in the Synthesis of SBS Block Copolymers in Cyclohexane” Journal of Applied Polymer Science, John Wiley and Sons, Inc. New York, US, vol. 64 No. 13, Jun. 27, 1997, pp. 2543-2560.
Dubois Donn Anthony
Handlin, Jr. Dale Lee
Hansen David Romme
St. Clair David John
Willis Carl Lesley
Asinovsky Olga
KRATON Polymers U.S. LLC
Masse Michael A.
Seidleck James J.
Vance Dean F.
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