Table 1 Resin constants of (SDEA)-modified polyesteramide resins.

From: Preparation of new surface coating based on modified oil-based polymers blended with ZnO and CuZnO NPs for steel protection

Resin no.

Ingredients

Eo

E

eA

eB

F

mo

R

K

Wgm

H2O Off

mL

IIa

HESA (1.00)

0.260

184

–

0.260

2

0.130

1.00

1.00

47.73

2.33

SDEA (0.00)

–

–

–

–

–

–

–

PA

0.259

74.1

0.259

–

2

0.130

19.19

   

0.259

0.260

 

0.260

66.92

IIb

HESA (0.90)

0.234

184

–

0.234

2

0.117

1.00

1.00

43.10

2.33

SDEA (0.10)

0.026

113

–

0.026

2

0.013

2.94

PA

0.259

74.1

0.259

–

2

0.130

19.19

   

0.259

0.260

 

0.260

65.23

IIc

HESA (0.80)

0.208

184

–

0.208

2

0.104

1.00

1.00

38.3

2.33

SDEA (0.20)

0.052

113

–

0.052

2

0.026

5.87

PA

0.259

74.1

0.259

–

2

0.130

19.19

   

0.259

0.260

 

0.260

63.36

IId

HESA (0.70)

0.182

184

–

0.182

2

0.091

1.00

1.00

33.48

2.33

SDEA (0.30)

0.078

113

–

0.078

2

0.039

8.81

PA

0.259

74.1

0.259

–

2

0.13

19.19

   

0.259

0.260

 

0.260

61.48

  1. HESA, hydroxy ethyl sunflower amide; PA, phthalic anhydride; SDEA, salicylic diethanol amine; E, equivalent weight; eA, number of acid equivalent; eB, number of hydroxyl equivalent; e0, total equivalent present at the start of the reaction; F, functionality; K, alkyl constant (m0/eA); R, ratio of total-OH groups to total-COOH groups (eB/eA).
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