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Class Information
Number: 528/232
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > From aldehyde or derivative thereof as reactant > Polymerizing in the presence of a specified material other than a reactant
Description: Subject matter wherein an aldehyde or derivative is polymerized in the presence of a special material.










Sub-classes under this class:

Class Number Class Name Patents
528/240 Material contains a boron atom 28
528/233 Material contains a metal atom 46
528/242 Material contains a phosphorus or sulfur atom 149
528/243 Material contains nitrogen as part of a nitrogen-containing compound 106


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8691936 Initiator Apr. 8, 2014
8586289 Aromatic hydrocarbon resin and composition for forming underlayer film for lithography Nov. 19, 2013
8252864 Polymerization-enhancing composition for urea-formaldehyde resins, method of manufacture, method of use, and articles formed therefrom Aug. 28, 2012
8202964 Initiator Jun. 19, 2012
8133966 Oxymethylene copolymers and the use thereof and process for the preparation of oxymethylene copolymers Mar. 13, 2012
7943726 Process for preparation of oxymethylene polymers in a homogeneous phase, and use May. 17, 2011
7902324 Initiator Mar. 8, 2011
7781561 Processes of synthesizing aromatic amine-based benzoxazine resins Aug. 24, 2010
7629419 Process for producing modified polymer, apparatus for producing modified polymer, and modified polymer Dec. 8, 2009
7598339 Method for removing residual monomers from polyoxymethylenes Oct. 6, 2009
7476718 Process for producing polyoxymethylene Jan. 13, 2009
7135539 Novolac resins, process for preparing them and uses thereof Nov. 14, 2006
RE39182 Process for the preparation of thermally stable polyoxymethylene copolymers Jul. 11, 2006
7049389 Process for preparing of aromatic oligomers May. 23, 2006
7001959 Polyoxymethylene copolymers, their preparation and use Feb. 21, 2006
6995213 Oriented films prepared using impact copolymer polypropylene Feb. 7, 2006
6756475 Preparation of polyoxymethylenes Jun. 29, 2004
6576714 Production process for glyoxylic acid (salt)-based polymer Jun. 10, 2003
6551702 Melamine resin dispersions Apr. 22, 2003
6410776 Method for producing resols Jun. 25, 2002
6403237 Polymeric fluorescent substance and organic electroluminescence device Jun. 11, 2002
6365704 Polyacetal copolymer Apr. 2, 2002
6362305 Method for producing formaldehyde from methanol Mar. 26, 2002
6265528 Preparation of polyoxymethylene dimethyl ethers by acid-activated catalytic conversion of methanol with formaldehyde formed by oxy-dehydrogenation of dimethyl ether Jul. 24, 2001
6140456 Chemicals and processes for making fluorinated poly(para-xylylenes) Oct. 31, 2000
6100368 Process for production of acidic aqueous solutions of melamine-aldehyde polymer having low levels of free aldehyde Aug. 8, 2000
6063894 Process for purifying polymers using ultrasonic extraction May. 16, 2000
6037417 Polypropylene composition useful for making solid state oriented film Mar. 14, 2000
6031132 Amide-group-containing polyacetal and its production process and use Feb. 29, 2000
5994455 Process for the preparation of thermally stable polyoxymethylene copolymers Nov. 30, 1999
5962623 Process for the preparation of polyacetal copolymers Oct. 5, 1999
5958398 Biodegradable polyacetal polymers and methods for their formation and use Sep. 28, 1999
5932628 Binder composition for production of molds and method of producing mold Aug. 3, 1999
5929197 Acylsuccinic acid polyesters, a process for their preparation and their use in thermosetting plastics and coatings Jul. 27, 1999
5891983 Water-soluble formaldehyde-free polycondensation products based on amino-s-triazines Apr. 6, 1999
5866670 Process for preparing polyacetal copolymer Feb. 2, 1999
5856288 Polyalkylene glycol-polyglyoxylate block copolymer, its production process and use Jan. 5, 1999
5849858 Resinous binder compositions Dec. 15, 1998
5837781 Thermally stable polyoxymethylene copolymer Nov. 17, 1998
5811510 Biodegradable polyacetal polymers and methods for their formation and use Sep. 22, 1998
5795507 Preparation of pigmented melamine-formaldehyde polymer beads Aug. 18, 1998
5756599 Binder resin, binder system, cellulosic composite articles, and method of making the same May. 26, 1998
5728797 Method of making cured resin particles Mar. 17, 1998
5708121 Storage stable melamine-modified phenolic resole resins using an alkaline condensation and polyhydroxyl compound stabilization Jan. 13, 1998
5705605 Process for the preparation of a dyeing auxiliary Jan. 6, 1998
5691426 Resin composition Nov. 25, 1997
5686554 Process for the manufacture of paraformaldehyde Nov. 11, 1997
5674971 Urea-formaldehyde resin composition and method of preparation thereof Oct. 7, 1997
5659002 Modified tannin mannich polymers Aug. 19, 1997
5648435 Process for production of multicyanate esters Jul. 15, 1997

1 2 3 4 5










 
 
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