Carbamic acid, ethyl ester → Toluene 2,4-Diisocyanate

HRID 1180467Notes

Reaction equation

HRID 1180467 reaction equation
[NH2:1][C:2]([O:4]CC)=[O:3].[N-:7]=[C:8]=[O:9].[C:10]1([CH3:16])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.C(C(C)=O)C>>[CH2:14]([N:1]=[C:2]=[O:4])[CH2:15][CH2:10][CH2:11][CH2:12][CH2:13][N:7]=[C:8]=[O:9].[CH3:16][C:10]1[C:15](=[CH:14][C:13](=[CH:12][CH:11]=1)[N:1]=[C:2]=[O:3])[N:7]=[C:8]=[O:9]

Participants

5

Reactant 3

HCID 5641Carbamic acid, ethyl esterHCID 105034IsocyanateHCID 21226399HCID 21226399, compound

Product 2

HCID 11443Toluene 2,4-DiisocyanateHCID 13192Hexamethylene diisocyanate

Conditions

Temperature
80 °C

Procedure

As the adhesive layer, a polyester-urethane adhesive was used and a composition for an adhesive layer was prepared as follows. That is, a polyester resin (80 parts by weight, VYLON RV-200) manufactured by Toyo Boseki Kabushiki Kaisha was dissolved in a mixed solvent (1940 parts by weight) of toluene/methyl ethyl ketone=80/20 (weight ratio) while heating at 80° C. After cooling, DESMODUER HL (20 parts by weight, manufactured by Sumitomo Bayer Urethane) which is isocyanulate polyhydric isocyanate obtained from hexamethylene diisocyanate and toluene diisocyanate as starting materials, was added as isocyanulate polyhydric isocyanate, and triethylene diamine (0.06 part by weight) was added as a curing catalyst, and the mixture was stirred for 10 min.

Workup

  1. customa composition for an adhesive layer was prepared
  2. temperatureAfter cooling

Sources & evidence

ORD record
ord-8659fbfd7f1f433a9d32e19c4317adcd
Source dataset
uspto-grants-2007_10
Patent number
US07282256B2

Reaction notes

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