PG

1,2 Propyleneglycol

BD

1,4 Butanediol

HD

1,6 Hexanediol

HMDI

4,4 ? Dicyclohexyl diisocianate

AH

Acid catalyst

ACN

Acrylonitrile

ABS

Acrylonitrile-butadiene-styrene copolymer

ACE

Activated chain end mechanism

AM

Activated monomer mechanism

AA

Adipic acid

AIBN

Azoisobutyrodinitrile

bp

Boiling point

BVT

Brookfield Viscosity Test

BHT

Butylated hydroxytoluene

BO

Butylene oxide

CPL

?-Caprolactone

T _c

Ceiling temperature

DEG

Diethyleneglycol

DETA

Diethylenetriamine

DSC

Differential scanning calorimetry

DGBA

Diglycidyl ether of bisphenol A

DMC

Dimetallic catalyst(s)

DMPP

Dimethyl methyl phosphonate

DMF

Dimethylformamide

DMSO

Dimethylsulfoxide

DMT

Dimethylterephthalate

MDI

Diphenylmethane diisocyanate

MDA

Diphenylmethanediamine

DPG

Dipropyleneglycol(s)

EW

Equivalent weight

EG

Ethylene glycol

EO

Ethylene oxide

EDA

Ethylenediamine

f

Functionality

GPC

Gel permeation chromatography

T _g

Glass transition temperature

H-H

Head-to-head type

H-T

Head-to-tail type

HDI

Hexamethylene diisocyanate

HXR

Hydrogen active compounds

OH#

Hydroxyl number

IR

Infra red

IV

Iodine value

IPDI

Isophorone diisocyanate

IPA

Isophthalic acid

LiOH

Lithium hydroxide

MA

Maleic anhydride

mp

Melting point

MMA

Methyl methacrylate