Table 2 Resin constants of (SDEA)-modified alkyd 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

Wmg

mo

R

K

H2O

Off (mL)

Ia

G (1.00)

0.260

30.7

0.260

3

7.98

0.086

   

SDEA (0.00)

   

LOFA

0.111

280

0.111

1

31.08

0.111

1

1.04

2

PA

0.149

74.1

0.149

2

11.04

0.074

  

1.34

   

0.260

0.260

 

50.1

0.271

  

3.34

Ib

G (0.90)

0.234

30.7

0.234

3

7.18

0.078

   

SDEA (0.10)

0.026

113

0.026

2

2.94

0.013

   

LOFA

0.111

280

0.111

1

31.08

0.111

1

1.06

2

PA

0.149

74.1

0.149

2

11.04

0.074

  

1.34

   

0.260

0.260

 

52.01

0.276

  

3.34

Ic

G (0.80)

0.208

30.7

0.000

0.208

3

6.39

0.069

   

SDEA (0.20)

0.052

113

0.000

0.052

2

5.87

0.026

   

LOFA

0.111

280

0.111

0.000

1

31.08

0.111

1

1.07

2

PA

0.149

74.1

0.149

0.000

2

11.04

0.740

  

1.34

   

0.260

0.260

 

53.94

0.280

  

3.34

Id

G (0.70)

0.182

30.7

0.000

0.182

3

5.59

0.060

   

SDEA (0.30)

0.078

113

0.000

0.078

2

8.81

0.039

   

LOFA

0.111

280

0.111

0.000

1

31.08

0.111

1

1.09

2

PA

0.149

74.1

0.149

0.000

2

11.04

0.074

  

1.34

   

0.260

0.260

 

55.86

0.264

  

3.34

  1. LOFA, long oil fatty acid; 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).