Discover the Right Dianal Acrylic Resin

How Do I Select a Dianal Acrylic Resin?

Dianal grades vary based on different polymer backbone compositions, molecular weight, acid number, hydroxyl number, and glass transition temperature (Tg). These properties dictate the kind of application they are suited for. As an example, higher-molecular-weight and Tg grades in the portfolio function as binders that maximize film toughness for coating and ink applications. Lower-molecular-weight and Tg grades are typically used in coating, ink, and adhesive applications that require higher film flexibility, tack, or solubility in certain solvents.

 

These may also function as polymer additives blended with higher-molecular-weight Dianal grades or other binders to achieve intermediate properties. Dianal grades with higher acid numbers are preferred for pigmented coatings and water-reducible coatings, where the high acid content improves pigment dispersion and enables neutralization into water, respectively. Finally, grades with high hydroxyl content enable cross-linking or curing via isocyanates to create two-component polyurethane coatings.

Listed below are select Dianal grades, related specifications, and short notes about their attributes and use cases.

Distinguishing Characteristic	Grade Name	Tg (°C)	MW	Viscosity (cPs)	Acid Number	OH Number	Comments
Adhesion	BR-121DA	44	110,000	2,130	7.5	12	Resin with excellent adhesion to metal (not EU REACH listed)
	MB-2588	33	120,000	>14,800	16		Softer, more flexible coating resin, soluble in weak solvents
	TB-322	48	60,000	680	3.4		Excellent for adhesion to various metallic substrates
Solubility in weak solvents	BR-101	48	145,000	800	0		Relatively hard; soluble in aliphatic and alcohol solvents
	BR-115	46	55,000	130	0		Compatible with long- and medium-oil alkyd resins and weak solvents
	BR-220	50	65,000	1,070	9		Resin with excellent alcohol solubility
	MB-7022	46	25,000	40	0		Low–molecular weight resin giving improved adhesion to reactive cure systems
	TB-044	48	60,000	225	2.8		Low-VOC resin with enhanced solubility in low Kb solvents
Hardness	BR-73	97	80,000	3,400	3.3		Very hard coating resin with improved solubility, flexibility, adhesion, and pigment dispersion
	BR-80	104	105,000	24,000	0		The hardest in the BR series, tough with excellent durability and weather resistance
	BR-87	105	30,000	1,070	9		Hard, higher-acid resin, excellent for improved pigment dispersion
Acid content	PB-204	94	12,000	2,450	49		Low–molecular weight, high-acid resin
	PB-588	41	100,000	Insoluble	45		Highest–molecular weight, high-acid resin
Hydroxyl content	MB-2752	50	25,000	550	6.5	90	Highest OH value for 2K (2-component) coatings
	MB-2876	75	25,000	275	5	8	Higher-toughness, lower-viscosity resin
	MB-2935	84	25,000	340	5	8	Hydroxyl functional
Low molecular weight	MB-2594	88	8,000	20	7		Acid-functional, ultralow–molecular weight resin for pigment dispersion
	MB-2595	85	11,000	25	0.4		Amine-functional, ultralow–molecular weight resin for pigment dispersion
	TB-250	129	7,000	10	2.5		Nestle/Swiss compliant grade with high compatibility to various resins; excellent pigment-wetting properties
General performance	BR-106	47	60,000	335	3		General-purpose grade; acid content improves adhesion and pigment dispersion
	BR-107	49	75,000	330	0		Moderately hard and flexible; soluble in a range of solvents
	BR-113	75	30,000	310	3.3		Hard, general-purpose coating resin
	BR-116	48	50,000	370	6.5		Coating resin with improved pigment dispersion
	MB-2543	47	35,000	125	3		High-solids, low-VOC general-purpose resin
	MB-2823	80	25,000	210	0		Good compatibility with short-oil alkyds
	MB-3070	52	100,000	2,450	3.3		High molecular weight with good mechanical properties
	MB-7017	47	45,000	200	3		Medium–molecular weight general coating resin
	TB-316	54	9,000	227	10.4	77	Hydroxyl-functional resin for use in automotive refinish and other specialty coatings
Styrene acrylic	BR-53	56	65,000	335	6.8		Excellent humidity and water resistance
	BR-57	56	55,000	205	5.5		Resin for higher-solids coatings

What Applications Are Dianal Acrylic Resins Used In?

Taking into account the qualities described above, below are applications where Dianal resins are used.

•    Industrial coatings
•    Plastic coatings
•    Wood coatings
•    Marine metal coatings
•    Direct-to-metal coatings
•    Road marking paints
•    Flexographic inks
•    Overprint varnishes
•    Concrete cure and seal coatings
•    PVC topcoats
•    Adhesives

How Do I Use Dianal Acrylic Resins?

Most of the Dianal resins are dissolved in flammable solvents that require caution for safe use. SDSs should be reviewed prior to use. While Dianal resins dissolve well in several types of solvents, there are best practices to form clump-free solutions. In general, high-speed or high-shear mixers should be used to create a high-speed vortex prior to adding Dianal bead resins at a controlled rate. Any clumps of beads or particles in Dianal resin packages should be screened out and broken up prior to addition into mixers. If dissolution still presents challenges, applying mild heat may help, though it is important to note the flammability of the solvent or solvent mixture being used.

ChemPoint is here to assist with any questions pertaining to product selection and formulation assistance. To request a sample, ask a question, or request a quote for Dianal, click the link below.