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Class Information
Number: 568/856
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Acyclic > Polyhydroxy > Acetylenically unsaturated > Purification or recovery
Description: Processes which include separating the compound from impurities or from the reaction mixture.










Patents under this class:

Patent Number Title Of Patent Date Issued
7605292 Method for the separation of polymeric by-products from 1,4-butynediol Oct. 20, 2009
7572941 Method for the separation of polymeric by-products from 1,4-butynediol Aug. 11, 2009
7538254 Method for the separation of polymeric by-products from 1,4-butynediol May. 26, 2009
7524996 Method for the separation of polymeric by-products from 1,4-butynediol Apr. 28, 2009
6956141 Method for preparing acetylene alcohols and their secondary products Oct. 18, 2005
5973213 Process for separating solids from aqueous 1,4-butynediol solutions Oct. 26, 1999
5874651 Recovering products from a by-products stream Feb. 23, 1999
5444169 Process and apparatus for the synthesis of butynediol Aug. 22, 1995
5233100 Process for producing alcohol Aug. 3, 1993
4960959 Process for the manufacture of alkynediols by reaction of ketones with acetylene Oct. 2, 1990
4954527 Novel polyacetylene compositions and their methods of use Sep. 4, 1990
4952292 Process for manufacturing 2,4-hexadiyne-1,6-diol Aug. 28, 1990
4933488 Triisobutylene alcohols and esters, uses thereof in perfumery and halogenated intermediates useful for preparing same Jun. 12, 1990
4599467 Production of vicinal alkylene glycols Jul. 8, 1986
RE32072 Process of producing a distilled butanediol product of high quality in high yield Jan. 28, 1986
4373999 Distillation of butinediol-1,4 Feb. 15, 1983
4371723 Process of producing a distilled butanediol product of high quality in high yield Feb. 1, 1983
4319055 Process for removing formaldehyde from aqueous solutions of but-2-yne-1,4-diol Mar. 9, 1982
4180687 Reaction of formaldehyde in butynediol Dec. 25, 1979
3992458 Flavoring and perfuming ingredients Nov. 16, 1976











 
 
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