1 
  
 
 
 
 
المواصفة القياسية الكويتية  
KWS 18 /2018 
 
 
 
 
 
 
الأصباغ (الدهانات) المطفأة ذات الاساس الألكيدي للأعمالالداخلية 
مواصفة قياسية كويتية رقم 18 
 
Matt Alkyd Paint for Internal Uses  
KWS 18/1994  
 
 
 
 
 
الهيئة العامة للصناعة 
دولة الكويت
 
2 
 تقديم 
 
تمثل إدارة المو اصفات والمقاييس جهاز التقييس الوطني بدولة الكويت وهي عضو مؤسس في هيئة التقييس لدول مجلس التعاون لدول 
الخليج العربية وهي هيئة إقليمية تضم في عضويتها أجهزة التقييس الوطنية في الدول الأعضاء، ومن مهام الإدارة إعداد المواصفات 
القياسية واللوائح الفنية الكويتية بواسطة لجان فنية متخصصة . 
 
قامت اللجنة الفنية بدراسة  وتحديث المواصفة القياسية الكويتية رقم  KWS 18،التعاريف والتصنيف والخصائص وبطاقة البيان ات 
مع إدخال تعديلات فنية عليها وذلك وفق القرار الوزاري الصادر بشأنها.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
3 
  
Translation  
 
Public Authority for Industry  
Specifications and Standards Department  
 
Final Draft  
11.3.2018  
 Matt Alkyd Paints for Interior  Uses  
KSS No. 18/1994  
  
4 
 Matt Alkyd Paints for Interior  Uses  
1 Scope  
1.1 This Kuwaiti Standard is concerned with the requirements and te sting methods of alkyd (oily) 
matt paints as well as base  paints for painting as a final layer, used in alkyd paints for interior  
work (and not primary paints or primer)  
 
2 Normative references:  
2.1   GSO ISO 1513 – Paints and Varnishes – Examination and Pr eparation of test samples  
2.2  GSO ISO 1514 - Paints and Varnishes – standard Panels for testing  
2.3  GSO ISO 2808 Paints and Varnishes – determination of film thickness  
2.4  GSO ISO 15528 Paints, varnishes and raw materials for paints and varnishes – Sampling  
2.5  GSO ISO 3270 Paints and varnishes and their raw materials - Temperatures and humidities for 
conditioning and testing  
2.6  GSO ISO 2811 -1 Paints and Varnishes - determination of density – Part 1:  pycnometer  
method.  
2.7  GSO ISO 6504 -3 Paints and varnishes - Determination of hiding power - Part 3: Determination 
of contrast ratio of light -coloured paints at a fixed spreading rate  
2.8  GSO ISO 2884 -2 Paints and varnishes - Determination of viscosity using rotary viscometers - 
Part 2: Disc or ball vis cometer operated at a specified speed  
2.9  GSO ISO 3251 Paints, varnishes and plastics - Determination of non -volatile -mattr content  
2.10  GSO ISO 2813 Paints and varnishes -- Determination of gloss value at 20 degrees, 60 
degrees and 85 degrees  
2.11  GSO ISO 9117 -4 Paints and varnishes -- Drying tests -- Part 4: Test using a mechanical 
recorder  
2.12  ASTM D2486 standard test methods for scrub resistance of wall paints.  
2.13 GSO ISO 1524 Paints, varnishes and printing inks -- Determination of fineness of gr ind 
2.14  GSO ISO 1523 Determination of flash point -- Closed cup equilibrium method  
2.15  GSO ISO 3856 -1 Paints and varnishes - Determination of "soluble" metal content - Part 1: 
Determination of lead content - Flame atomic absorption spectrometric method  and dithizone 
spectrophotometric method  
  
5 
 2.16 GSO ISO 11890 -1 Paints and varnishes - Determination of volatile organic compound (VOC) 
content – Part 1: Difference method  
GSO ISO 11890 -2 Paints and varnishes - Determination of volatile organic compound (VO C) content 
Part 2: Gas -chromatographic method  
 
3 Classifications:  
3.1 Alkyd matt dyes (paints) for interior  use are classified into premium category and medium 
category.  
3.2 All the above categories include the white color and three types of primer: primer (a) for l ight 
colors, primer (b) for medium colors and primer (c) for dark colors.  
 
4 Definitions:  
4.1 Matt Alkyd (oil) paint  
Composite paint which provides upon drying non glossy or low glossy layer . 
 
4.2 Final appearance:  
Paint surface which is non glossy . 
 
4.3 Vehicle:  
The carrier medium shall contain a dryable oil or alkyd resin or a mixture of both. Further, it 
contains a suitable solvent or a mixture of diluters and additives.  
 
4.4 Pigments:  
Any pigments and suitable dispersion materials may be used, provide d the final product meets 
all the requirements of this standard specification.  
4.5 Base:  
It is a semi -finished product which needs to be tinted to be a finished coloured product and it is 
classified as A base, B base, and C base depending on the required colour of final product.  
4.6 Skinning:  
The formation of a skin layer on top of the paint surface inside the container.  
 
4.7 Opacity  
The ability of the paint layer to conceal or opaque the painted underneath surface.  
 
4.8 Drying time  
The time elapsed b etween using the paint layer and reaching the specified dryness condition.   
6 
  
4.9 Peeling (removal)  
The failure which occurs due to the bulging of a dried layer of paint or varnish upon painting 
with another layer, and usually appears in the form of twists  
 
4.10 Lifting (bulging)  
This is a failure which occurs in the paint or dried painted layer and usually appears in the form 
of curls when painted with another layer above it.  
 
5  Requirements  
5.1  Composition:  
Alkyd (oily) paint consists of a color with suita ble spreading substances with suitable ratios in 
alkyd (oily) medium or any type of industrial alkyds with any other suitable compositions 
suitable for the production of the paint substance which achieve the requirements of this 
specification.  
 
5.2 Application  properties:  
The paint shall be characterized by satisfactory application properties upon applying it 
according to the manufacturers’ recommendations. The dry layer of paint should be glossy, 
well adhered and free of any surface deformation such as sagging , crinkling, cracking, 
pinholds, or any other surface defects, after the lapse of 24 hours as a maximum of air drying.  
 
5.3 Status in the container:  
The paint shall be free of particles, skinning surfaces or gelling and the paint shall not contain 
any residue  or granules other than the ones that can be re -mixed in the paint, in order for the 
paint to be in a smooth and homogenous status.  
 
5.4 Storage properties:  
The paint shall retain its properties if left in its tightly sealed original container away from dire ct 
sunlight for a period not less than 12 months without forming a skin layer on the surface or its 
composition thickens during this period and upon occurrence of deposition, it may be re -mixed 
easily.  
 
  
7 
 5.5 Appearance of dried film (finish):  
When a film of th e paint has dried for the specified drying period, it shall have, smooth, firmly 
adherent and substantially free from brush marks or sagging or wrinkling, and shall in no way 
be inferior as regards finish to a film prepared in the same way and the same tim e from the 
approved reference sample.  
 
5.6 Requirements:  
Table No.1 illustrates the requirements for the premium category and table No.2 the 
requirements for the medium category, and the base paints for each category.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
8 
 Table 1 : ( Alky d Paints – Premium / Matt )  
Premium -Matt 
Test Description  اللون الأبيض  
White)  أساس أ  
Base A)  أساس ب  
Base B)  أساس جـ  
Base C)  
Specific gravity  
ISO 2811 -1  
(Minimum )  1.3 1.3 1.3 1.3 
Opacity - % 
ISO 6504 -3  
(Minimum )  90 90 80 NA 
Viscosity - poise  
 ISO 2884 -2 10-20 10-20 10-20 10-20 
Gloss  
ISO 2813 ) at angle 60°) 
(Minimum )  10 10 10 10 
Surface Dry Time – Hrs. 
ISO 9117 -4  
at film thickness 100 µ m 
 (Maximum ) 2  2  2  2  
Full Dry / Dry to hardness - Hrs. 
ISO 9117 -4  
 at film thickness 100 µ m 
(Maximum)   24  24  24  24  
Scrub resistance *  
ASTM D2486  
 at film thic kness 100 µ m 
(Minimum 3000 cycles )  pass pass pass pass 
Fineness of Grind - Micron  
ISO 1524  30-70 30-70 30-70 30-70 
Flash point -°C  
ISO1523 
(Minimum )  35 35 35 35 
Lead - wt.%  
ISO 3856 -1 
(Maximum )  0.06 0.06 0.06 0.06 
Water Resistance  
ISO 2812 -4(for 4 hrs. ) pass pass pass pass 
Non Volatile Material - wt.%  
ISO 3251  
(Minimum)  65 60 60 55 
Volatile Organic Compound - g/L 
ISO 11890 -1 
ISO 11890 -2 
(Maximum)  450 450 450 450 
*For any test sample the exposed area should not exceed (Maximum 5mm) along the same dire ction of the brush   
9 
 Table 2: ( Alkyd Paints – Medium / Matt)  
Medium -Matt 
Test Description  اللون الأبيض  
White)  أساس أ  
Base A)  أساس ب  
Base B)  أساس جـ  
Base C)  
Specific gravity  
ISO 2811 -1  
(Minimum )  1.3 1.3 1.3 1.3 
Opacity - % 
ISO 6504 -3  
(Minimum )  90 90 80 NA 
Viscosity - poise  
 ISO 2884 -2 10-20 10-20 10-20 10-20 
Gloss  
ISO 2813 ) at angle 60°) 
(Minimum )  10 10 10 10 
Surface Dry Time – Hrs. 
ISO 9117 -4  
at film thickness 100 µ m 
 (Maximum ) 2 2  2  2  
Full Dry / Dry to hardness - Hrs. 
ISO 9117 -4 
 at film thickness 100 µ m 
(Maximum )  24  24  24  24  
Scrub resistance *  
ASTM D2486  
at film thickne ss 100 µ m 
(Minimum 2000 cycles )  pass pass pass pass 
Fineness of Grind - Micron  
ISO 1524  
(Maximum )  70 70 70 70 
Flash point  - °C  
ISO1523 
(Minimum )  35 35 35 35 
Lead - wt.%  
ISO 3856 -1 
(Maximum )  0.06 0.06 0.06 0.06 
Non Volatile Material - wt.%  
ISO 3251  
(Minimum)  60 55 55 50 
Volatile Organic Compound - g/L 
ISO 11890 -1 
ISO 11890 -2 
(Maximum)  450 450 450 450 
*For any test sample the exposed area should not exceed (Maximum 5mm) along the same direction of the brush  
  
10 
  
6) Sampling:  
6.1 A sample representing the paint c onsignment of not less than 4 litres or 1 gallon shall be taken 
according to the method stipulated under clause 2.4  
6.2 The samples shall be prepared for testing according to clause 2.1 & 2.2  
 
7) Packing:  
7.1 The paints shall be packed in suitable, clean, dry and t ightly sealed containers, and inactive to 
the contents whereby the free space from the full level is 15% as a maximum.  
7.2 A variation in the content by ±2% shall be allowed.  
 
8) Labelling:  
The following details shall be placed on each container in Arabic lang uage or in Arabic and 
English languages, in a manner difficult to be removed.  
8.1 Name and type of the paint, its classification according to clause 3 and the type of the base 
used whether A, B, or C for each class.  
8.2 Name of the manufacturer or its trademark.  
8.3 Country of origin  
8.4 If the paints are manufactured according to a license, this detail shall be stated.  
8.5 Production batch number  
8.6 Production date (month, year), expiry date or validity period from the production date.  
8.7 Net volume in litres or its equivalent.  
8.8 Method of use and maximum limit for the dilution percentage whereby the paint retains its 
properties.  
8.9 Any warning details relevant to this paint (example: may cause allergy upon contacting the 
skin)  
8.10 Warning: it is prohibited to use containers to store fo odstuff  
8.11 Other clarification details (for example storage conditions, it should be stored in the shade, as 
per the technical and safety data sheet of the substance TDS).  
8.12 Place the international logo of the United Nations Program which demonstrates hazard o f 
paint.  
8.13 Indicate whether the product conforms with this specification standard.   
11 
  
الجهات التي اشتركت في وضع المواصفات القياسية 
 
-الهيئة العامة للصناعة  - إدارة الموا صفات والمقاييس – إدارة مختبرات الجودة.  
-وزارة الأشغال العامة/ المركز الحكومي للأبحاث والب ناء. 
-المؤسسة العامة للرعاية السكنية.  
-شركة أصباغ جي تي سي المحدودة  GTC. 
-أصباغ ناشونال NATIONAL 
-شركة همبل للأصباغ البحرية – الكويت HEMPEL. 
-شركة سايبس  SIPES. 
-شركة أصباغ ام بي سي MPC 
-شركة أصباغ كي بي سي KPC 
-شركة أصباغ جوتن  JOTUN