Adipic Acid → 1,4-Butanediol

HRID 1764428Notes

Reaction equation

HRID 1764428 reaction equation
C(O)CO.[CH2:5]([OH:10])[CH2:6][CH2:7][CH2:8][OH:9].[C:11](O)(=[O:19])[CH2:12][CH2:13][CH2:14][CH2:15][C:16](O)=[O:17]>CN(C)C=O>[CH2:5]([OH:10])[CH2:6][CH2:7][CH2:8][OH:9].[CH2:11]([OH:19])[CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][OH:17]

Participants

5

Reactant 2

HCID 196Adipic AcidHCID 18380939HCID 18380939, compound

Product 2

HCID 80641,4-ButanediolHCID 123741,6-Hexanediol

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Top coat solution D1 is a 25% solution of a polyester urethane in dimethylformamide (DMF)/methyl ethyl ketone (MEK) (1:1) with a viscosity of 10,000 cP/25° C. The polyester urethane elastomer is obtained from 2000 g (1.0 mol) of a copolyester of ethylene glycol/butane-1,4-diol and adipic acid (molecular weight 2000), 108.0 g (1.20 mol) of butane-1,4-diol, 141.6 g (1.20 mol) of hexane-1,6-diol and the equivalent quantity of 4,4'-diphenylmethane diisocyanate (850 g) by a one-shot process. The molar ratio of chain-lengthening agents is therefore 1:1.

Workup

  1. customwith a viscosity of 10,000 cP/25° C

Sources & evidence

ORD record
ord-d02d20580b83495887bb5bc61202456a
Source dataset
uspto-grants-1978_09
Patent number
US04116741

Reaction notes

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