Acrylic Polymers

What acrylic polymers are

Acrylic polymers in this catalogue are acrylic and methacrylic binders and acrylic-maleic copolymers made for leather finishing and wet-end fill. They are not commodity paint latexes. Dyna Glycols manufactures them to agreed solids, pH, film hardness and lightfastness so a tannery can specify a finish binder or a retanning acrylic by those numbers rather than a warehouse nickname.

Acrylic-maleic copolymers sit in the wet-end as filling and dye-leveling syntans. Acrylic and methacrylic emulsions sit in finishing as binders for grain, corrected grain and splits. The two duties are different: a retan acrylic is not a drop-in finish coat, and a finish binder is not a drum fill.

How Dyna Glycols manufactures acrylic polymers

Polymerisation is run to the target solids, pH and particle-size window, then finished for tannery floats or spray/curtain application. QA releases against appearance, solids, pH and the film or fill tests written on the TDS.

Custom softness, anionic character and formaldehyde-free finishing systems are quoted when a catalogue binder is close but not exact. Pair the acrylic with the lacquer and wax from the leather finishing pages so the season is sampled as a set.

Typical grades in this range

Start from the duty: wet-end copolymer versus finish binder. Open the leather finishing-binder and syntan pages for named grades.

• Acrylic-maleic copolymers for leather wet-end fill and dye-level
• Acrylic binders for grain and corrected-grain finish
• Methacrylic binders where a harder, more lightfast film is specified
• Custom solids, pH and film-hardness windows

Where acrylic polymers are used

Upholstery, shoe upper and garment crust use acrylic retans to keep grain fine and to improve wet-toggling. Lightfast pale articles often prefer acrylic fill over some vegetable extracts. Finish seasons use acrylic binders under nitrocellulose or polyurethane lacquers.

Do not specify these polymers as architectural paint binders. The catalogue is leather-led. If the need is an emulsion-polymerisation surfactant for adhesives or coatings, use the adhesive or paints pages instead.

How to specify acrylic polymers

State wet-end versus finish, required solids, pH, anionic or non-ionic character, film hardness or fill, and any limit on formaldehyde or APEO in the season. Share hide type and whether the leather will be milled, plated or spray-finished.

If replacing a competitor acrylic binder, send solids, pH and a hardness or elongation note from that TDS.

Quality, documents and supply

Lots are released against solids, pH, appearance and the film or application tests on the TDS. SDS and COA follow verification. Finish adhesion must be checked on the tannery grain after any cationic dye-fixer.

Protect emulsions from frost. Mix before use. Follow the SDS for concentrated binders.

Practical notes on acrylic polymers

A cationic surface from a dye fixer can block anionic acrylic finish. Drain and rinse before the binder coat, or reduce fixer dose on grain articles.

Lightfastness is a reason to choose acrylic retan on pale upholstery. Confirm the light-test method the brand uses.

Related pages: finishing binders, wet-end syntans, lacquers and wax emulsion. Sample the season together rather than one drum at a time.

Solids on the label are not the same as film yield. Ask for the recommended coat weight on the TDS.

Custom methacrylic ratios change hardness more than a small solids shift. Freeze the ratio once a trial lot is approved.

English is the source language for finish claims. Machine translation of solids or pH is not a specification.

Ordering and evaluating acrylic polymers

Dyna Glycols supports acrylic polymers with laboratory samples, current SDS, TDS and COA from the Kandla SEZ manufacturing network. Tell us the intended application, the substrate, the required moles or molecular weight, and any limits on colour, odour, cloud point, hydroxyl value, pH or residual feedstock. A matching catalogue grade of acrylic polymers in the Acrylic Polymers family can then be confirmed, or a custom batch can be planned on the ethoxylation, esterification or related plant.

When you evaluate acrylic polymers, send the competitor grade if one exists, the bath or emulsion conditions, and the tests your receiving laboratory will run. Pack options for acrylic polymers typically include drums, IBCs and bulk where the viscosity and melting point of the selected grade allow safe handling from the Acrylic Polymers manufacturing line.

A first order of acrylic polymers is easier when the purchase specification lists identity tests, not only a local trade name. Hydroxyl value, saponification value, acid value, cloud point, pH, water, colour and appearance are the numbers the Kandla QA laboratory can lock. If your QC uses a different solvent or a different cloud-point electrolyte for acrylic polymers, write that method on the order so the COA speaks the same language.

Custom lots of acrylic polymers are quoted after the hydrophobe or acid/alcohol pair, the target analytical window, the annual volume and the pack. Pilot batches are available when a catalogue point in the Acrylic Polymers range is close but not exact. Once a trial lot is approved, that TDS should be frozen so the tenth delivery of acrylic polymers matches the first approved drum.

Storage of acrylic polymers should follow the SDS: keep containers closed, protect hygroscopic grades from moisture, and warm high-melt or high-mole grades until uniform before sampling. FIFO rotation protects colour and odour. If a drum of acrylic polymers has frozen or separated in transit, homogenise it before charging a batch; do not decant only the liquid layer.

Application advice for acrylic polymers is given against the process you describe, not as a universal recipe. Share machine type, temperature, pH, electrolytes, fibre or hide type, and any ban on APEO, formaldehyde or food-contact lists. Dyna Glycols can then sample acrylic polymers alone or as a pair with a sister grade from the same Acrylic Polymers family so compatibility is checked in one evaluation.

Documentation for acrylic polymers is issued after a short verification of the company and the exact grade name. SDS covers handling; TDS covers typical properties; COA covers the shipping lot. If a customer audit needs extra tests on acrylic polymers (for example residual feedstock, peroxide, formaldehyde or a pharmacopoeia-style identity), list those tests at the enquiry stage so they are built into release rather than added after dispatch.

Export packing and labelling of acrylic polymers follow the transport class on the SDS. Regular industrial shipments from the Indian manufacturing network can be scheduled once the grade is approved. For development quantities of acrylic polymers, laboratory samples are the correct first step; they let wetting, emulsification, retanning, finishing or textile handle be proven in your own equipment before a bulk campaign is booked on the Acrylic Polymers plant.