Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2006-01-31
2010-06-29
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C264S176100, C264S219000, C525S272000, C525S274000, C526S271000, C526S272000, C526S297000, C526S298000
Reexamination Certificate
active
07745561
ABSTRACT:
The invention provides alternatives to traditional polycondensation processes for preparing copolymers. For example, in certain embodiments, the invention provides a process that includes an extrusion step and a solid state polymerization step to prepare high molecular weight block copolymer with a “hard block” contributed by a macrocyclic polyester oligomer (MPO) and a “soft block” contributed by a dihydroxyl-functionalized polymer, an oligoether, and/or a dimerized fatty acid (i.e. a polyol). The invention also provides new copolymer compositions made possible by the new processes—for example, copolymers of higher molecular weight, copolymers with higher weight ratio of soft block units to hard block units, copolymers made with higher molecular weight polyol, and copolymers with hard block units that are themselves random copolyesters of units contributed by a MPO and a cyclic ester.
REFERENCES:
patent: 4680345 (1987-07-01), Kobayashi et al.
patent: 4785060 (1988-11-01), Nagler
patent: 5039717 (1991-08-01), Kawakami et al.
patent: 5386037 (1995-01-01), Takekoshi et al.
patent: 5648454 (1997-07-01), Brunelle
patent: 5656700 (1997-08-01), Kägi et al.
patent: 5661214 (1997-08-01), Brunelle et al.
patent: 6297330 (2001-10-01), Burch, Jr. et al.
patent: 6420048 (2002-07-01), Wang
patent: 6436549 (2002-08-01), Wang
patent: 2004/0155380 (2004-08-01), Kendall et al.
patent: 1 354 908 (2003-10-01), None
patent: 1 378 540 (2004-01-01), None
patent: 4253764 (1992-09-01), None
patent: 2003011210 (2003-01-01), None
patent: WO 95/00574 (1995-01-01), None
patent: WO 01/53379 (2001-07-01), None
patent: WO 2004/060640 (2004-07-01), None
Brunelle (1995) “Macrocycles for the Synthesis of High Molecular Weight Polymers” pp. 197-235, ch. 6, New Methods of Polymer Syntheses: vol. 2, edited by J.R. Ebdon and G.C. Eastmond.
International Search Report, International Application No. PCT/US02/20956, issued Mar. 17, 2003.
International Preliminary Examination Report, International Application No. PCT/US02/17607, issued Aug. 29, 2003.
International Search Report and Written Opinion, International Application No. PCT/US02/17607, issued Oct. 29, 2002.
International Search Report and Written Opinion, International Application No. PCT/US2007/002534, issued Jul. 30, 2007.
Bahr Steven R.
Pawlson James
Boykin Terressa M
Cyclics Corporation
Goodwin & Procter LLP
LandOfFree
Processes for making copolymers using macrocyclic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Processes for making copolymers using macrocyclic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processes for making copolymers using macrocyclic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4151267