Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2005-12-30
2011-11-01
McClendon, Sanza (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C528S044000, C528S086000, C528S212000, C528S214000, C528S217000, C528S219000, C528S059000, C528S062000, C528S162000, C528S271000, C528S367000, C522S090000, C522S097000, C522S096000, C522S173000, C522S174000, C522S178000, C522S182000, C522S183000, C522S150000, C522S152000, C522S153000, C522S154000, C522S113000, C522S114000, C522S119000, C522S120000, C522S121000
Reexamination Certificate
active
08048979
ABSTRACT:
The present invention involves the design of a radiation curable organic pre polymer resin material based on urethane acrylic linkage synthesized from the natural renewable resource cardanol or a derivative thereof, for coating application. These new molecules have a faster and better curing rate compared to the starting renewable resource—cardanol. This is brought about by the hydrogen bonding of the urethane linkage which leads to a pre organization of the molecules in such a way as to bring the cross linkable double bonds closer to each other. The present invention also involves a UV curable formulation of the above mentioned resins along with 2-10 parts by weight of a photopolymerization initiator. The resin, either in a formulation or alone turns into a cross linked film upon photopolymerization in presence of photoinitiator under a UV curable radiation source like a mercury vapor pressure lamp.
REFERENCES:
patent: 3042545 (1962-07-01), Kienle et al.
patent: 3061650 (1962-10-01), Steckler et al.
patent: 4698377 (1987-10-01), Laitar
patent: 6051623 (2000-04-01), Stielau
patent: 6765079 (2004-07-01), Saminathan
patent: 7244772 (2007-07-01), Ittara et al.
patent: 7393465 (2008-07-01), Niesten et al.
patent: 2005/0192423 (2005-09-01), Niesten et al.
patent: 2006/0004115 (2006-01-01), Ittara et al.
patent: 2007/0175793 (2007-08-01), Narine et al.
patent: 2009/0176940 (2009-07-01), Takano et al.
patent: 0 599 075 (1994-06-01), None
patent: 62-241914 (1987-10-01), None
patent: 63-097641 (1988-04-01), None
patent: 63-213512 (1988-09-01), None
patent: 63-264616 (1988-11-01), None
Asha et al., “Synthesis and curing studies of PPG based telechelic urethane methacrylic macromonomers ,”Eur. Polym. J., 41:23-33, 2005.
Bhunia et al., “Synthesis and characterization of polymers from cashew nut shell liquid (CNSL), a renewable resource II. Synthesis of polyurethanes,”European Polymer Journal, 35(8):1381-1391, 1999.
Bhunia et al., “Synthesis of polyurethane from cashew nut shell liquid (CNSL), a renewable resource ,”J. Polym. Sci. Part A: Polym Chem, 36(3):391-400, 1998.
International Preliminary Report on Patentability issued in International Application No. PCT/IN2005/000454, mailed Jul. 10, 2008.
International Search Report issued in International Application No. PCT/IN2005/000454, mailed Sep. 11, 2006.
Jansen et al., “Fast monomers: factors affecting the inherent reactivity of acrylate monomers in photoinitiated acrylate polymerization,”Macromolecules, 36(11):3861-3873, 2003.
Sathiyalekshmi and Gopalakrishnan, “Evaluation of performance of polyurethanes based on hydroxy alkylated cardanol formaldehyde resins under aging conditions,”Adv. Polym. Tech., 23:91-102, 2004.
Tan, “Cardanol-lignin-based polyurethanes,”Polym. International, 41:13-16, 1996.
Pillai Chennakkattu Krishna Sadasivan
Syamakumari Asha
Council of Scientific and Industrial Research
Fulbright & Jaworski LLP
McClendon Sanza
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