Polyester Resin for Wood Coatings Applications

Runshine offers a variety of solvent-based polyester resins tailored for wood coatings, covering high molecular weight solid polyester resins, saturated polyester resins, and unsaturated polyester resins. These polyester resins deliver key properties like strong adhesion, flexibility, hardness, chemical resistance, and low-temperature adaptability, with unsaturated polyester resins featuring fast curing—all to meet diverse protective and decorative needs of wood substrates.



Product Overview

Polyester resins are synthetic polymers formed via polycondensation of polybasic acids and polyhydric alcohols. Runshine's polyester resins are highly versatile, allowing customization of hardness, flexibility, and chemical resistance during synthesis to fit wood coating requirements. As core components in wood coatings, polyester resins provide both protection and decoration for wood substrates.

 
Polyester Resin
 

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Key Features

Excellent aesthetic performance: Polyester resins can be formulated into various finishes to highlight wood grain, boosting wood products’ decorative appeal.

Strong durability: Coatings with polyester resins resist abrasion, scratches, and minor impacts, keeping wood surfaces intact with long-term use.

Good chemical resistance: Polyester resins shield wood from household chemicals like detergents and alcohol, preventing surface damage.

Superior adhesion and flexibility: Polyester resins bond firmly to wood and accommodate wood’s natural expansion/contraction, avoiding coating cracking.

Easy processing: Polyester resins have good flow properties, enabling smooth application via spraying, brushing, or rolling for uniform wood coverage.

Parameter

Typical Value

Unit

Notes

Appearance

Clear to pale yellow liquid

Visual inspection

Solid Content

40–100

%

Can be adjusted for formulation

Viscosity (25°C, Brookfield RV)

15000–25000

mPa·s

Spindle 3, 20 rpm

Hydroxyl Value

1.5–200

mg KOH/g

Determines reactivity with curing agent

Acid Value

≤16

mg KOH/g

Low acidity for stability

Density (25°C)

1.05–1.15

g/cm³

Typical value

Glass Transition Temperature (Tg)

-25–150

°C

Affects hardness and flexibility

Recommended Solvents

Xylene, Ethyl Acetate, Butyl Acetate,MEK etc

For formulation compatibility

Curing Method

With isocyanates or amino resins

2-pack polyurethane or industrial coatings

Shelf Life

12

months

Stored in sealed containers at 5–35°C

Storage

Cool, dry place

Avoid direct sunlight and moisture

 

High molecular weight polyester resin
Product Name Solid Content(%) Tg(℃) Mn Visc. (cm3/g) Structure AV(Solids)  OH Value(Solids) Solvent Properties Application
RHEPOL1828 40  47  15000  500-1500
mpa.s
L S-100DBE high molecular weight saturated poluesterresin,compatiblity,flexibilityalloy.
RHEPOL 1830 40  67  15000  3200-4800
mpa.s
L S-150/DBE high molecular weight saturated poluester resin,high Tg and good compatibility.
RHEPOL 1860 100  105  15000  55  L   good sterilization resistance,high adhesion
RHEPOL1861 100  70  18000  56  L   excellent flexibility and high hardness due toit's  high  Tg,good  corrosion  protection;co-
binder to improve blockingresistance
RHEPOL1867 100  65  20000  70  B   Excellent   flexibility,high   hardness,good substrate adhesion and corrosion protection;
thinfilm primers
RHEPOL 1870 100  40  15000  64  L   very flexible,high adhesion
RHEPOL1871 100  40  20000  64  B   Good reactivity,flexible,high adhesion, suitable as elastifying component
RHEPOL1872 100  40  15000  62  L     Highly flexible,high adhesion
RHEPOL1874 100  -23    97          opicdnisfalne povesiei fo themoplosic
If need complete polyester resin brochure ,pls contact us 

 

Saturated Polyester Resins
Product Name  Solid Content%  Solvent Visc. Colour AV(Solids) OH Value(Solids) Properties Application
RHEPOL 1809 60  S100/
S100/XYL
U-W ≤2 ≤10   Chemical  resistance  and  water  resistance,Automotive  base  coat,coloured  coating  and metallic base coatt
RHEPOL 1853 70 
XYL
  ≤3 ≤7 80  Stone-chipping resistance,adhesion,Automotive mid coat,aluminium paint and industrial baking enamel
RHEPOL 1825 75  S150 00-2 ≤3 ≤8 25  Promote flexibility
RHEPOL 1835 100    3000-4000   00-2 156  Formulate   two-component   coating   compounds.Mainly used on concrete and asphalt floors and steel surfaces.Coatinas are touiah and flexible. hard-wearing and chemical-resistant.
RHEPOL1839 55  MPA/S-100 2000-3000   Max.5 72  High Tg,Excellent chemical resistence.
RHEPOL 1840 65  S-150/BG 1500-3500   Max.3 36  Excellent QUVresistance,Suitable for high
durable paint.
If need complete Saturated polyester resin brochure ,pls contact us 

 

                Unsaturated polyester resin
Product Name Solid Content % Solvent Visc. Acid Number Remarks Properties Application
RHEUPE 1841 65 
Styrene
550-700 ≤15
Amine  pre-
accelerated
Non thixotropic resin for polyester putties
RHEUPE 1842 67 

Styrene
700-900 ≤15  
Resin addition for increasing elasticity
If need complete Unsaturated polyester resin brochure ,pls contact us

 

Applications

Furniture finishing: Polyester resins create high-gloss, semi-gloss, or matte finishes for furniture, enhancing visual appeal and protecting wood from daily wear.

✧l Cabinet coating: Applied to kitchen and bathroom cabinets, polyester resins form a barrier against stains from food, water, and cleaning agents, maintaining cabinet quality long-term.

Wooden flooring coating: Polyester resins form wear-resistant and scratch-resistant surfaces on wooden floors, withstanding foot traffic and extending floor life.

Decorative wood product coating: For items like photo frames and wall panels, polyester resins add smooth, attractive finishes while protecting wood from damage.

Wooden door coating: Polyester resins provide durable coatings for wooden doors, resisting moisture, UV rays, and impacts to preserve door structure and appearance.

 

 

Benefits

 

Enhances visual value: Diverse finishes and wood grain highlighting make wood products more attractive, increasing their market value.

✧Extends wood service life: The protective layer from polyester resins shields wood from moisture, UV rays, and physical damage, slowing aging and decay.

Reduces maintenance costs: Durable polyester resin coatings need less frequent cleaning and upkeep, saving time and money.

✧Resists yellowing: Polyester resins maintain the original color of wood coatings even under UV exposure, eliminating frequent repainting.

✧ Improves work efficiency: Fast-curing polyester resins shorten wood product production cycles, boosting manufacturer productivity.

✧Ensures environmental friendliness: VOC levels of polyester resins can be minimized, meeting environmental standards and reducing harm to health.

✧Adapts to production needs: Suitable for both large-scale industrial wood production and small-scale custom projects, thanks to versatile application methods.

✧Cost-effective: Polyester resins balance performance and cost, providing high-quality protection and decoration without excessive expense.

✧Moisture protection: Prevents moisture penetration, avoiding wood warping, swelling, or rotting—critical for humid environments like bathrooms.

✧Enhances surface smoothness: Fills small wood defects, creating smooth coatings that improve the tactile experience of wood products.

 

 

 


Product Tags polyester resin factory          Saturated Polyester Resin supplier          liquid polyester resin supplier          Unsaturated Polyester Resin supplier          polyester resin for coating          Polyester Resin For baked paints         

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