The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Jan. 26, 2011
Friedrich-karl Bruder, Krefeld, DE;
Wilfried Haese, Odenthal, DE;
Rafael Oser, Krefeld, DE;
Wolfgang Fischer, Meerbusch, DE;
Michael Ludewig, Odenthal, DE;
Raymond Wong, Hong Kong, CN;
Ice Zhang, Shanghai, CN;
Friedrich-Karl Bruder, Krefeld, DE;
Wilfried Haese, Odenthal, DE;
Rafael Oser, Krefeld, DE;
Wolfgang Fischer, Meerbusch, DE;
Michael Ludewig, Odenthal, DE;
Raymond Wong, Hong Kong, CN;
Ice Zhang, Shanghai, CN;
Bayer MaterialScience AG, , DE;
Abstract
This invention relates to DVDs made from polycarbonate and a special UV curable bonder material consisting of A) an urethane acrylate oligomer as binder, which is the reaction product of i) one or more polyisocyanates and ii) one or more hydroxyfunctional lactone ester (meth)acrylates having a number average molecular weight of from 200 g/mol to 2000 g/mol and having the formula: CH═C(R)—C(O)—O—R—[O—C(O)—R]—OH wherein, n is an integer from 1 to 5, Ris hydrogen or methyl, Rrepresents an alkylene group or substituted alkylene group having from 2 to 10 carbon atoms and Rrepresents a straight or branched chain alkylene group of from 3 to 8 carbon atoms, and which may be substituted with one or more alkyl groups having from 1 to 12 carbon atoms, B) a reactive thinner, comprising of mono functional acrylates and/or (meth)acrylates C) a photo initiator and D) optional additives which offers improved performance at high data transfer rates.