Adhesivos Sensibles a la Presión Productos Químicos
Los químicos para adhesivos sensibles a la presión (PSA) incluyen emulsiones acrílicas y acrílicos en solución, compuestos de caucho natural y sintético, resinas pegajosas (ésteres de resina de colofonia, resinas de hidrocarburos) y entrecruzadores para etiquetas, cintas, productos médicos y películas protectoras. Nuestras materias primas PSA están optimizadas para excelente pegajosidad inicial, resistencia al pelado y resistencia al cizallamiento.
Emulsión Acrílica PSA HN-5000
CAS 9003-01-4
MOQ: 200 kg
Acrilato Termofusible PSA AHMPSA-40
MOQ: 200 kg
Emulsión de PSA Acrílica de Alto Pegue HN-6000
MOQ: 200 kg
Resina de Terpeno Alfa-Pineno Adhesivo Tackificante APT-90
MOQ: 25 kg
Resina Tackificante Copolímero C5/C9 C59-100
MOQ: 100 kg
Éster de Glicerol de Colofonia GER-80
CAS 8050-31-5
MOQ: 500 kg
Dispersión de Aglutinante Hidrocarbonado TD-200
MOQ: 200 kg
Resina Tackificante C9 Aromática Hidrogenada HC9-120
MOQ: 200 kg
Éster de Glicerol de Colofonia Hidrogenada HGR-80
CAS 65997-13-9
MOQ: 500 kg
Éster Metílico de Colofonia Hidrogenada HRME-80
MOQ: 100 kg
Adhesivo Óptico Transparente Fotocurable OCA-300
MOQ: 25 kg
Éster de Pentaeritritol de Colofonia PE-100
CAS 8050-26-8
MOQ: 500 kg
Copolímero en Bloque SBS para Adhesivos Hot-Melt y de Contacto
CAS 9003-55-8
MOQ: 200 kg
Elastómero Termoplástico SEBS para Adhesivos Hot-Melt
MOQ: 100 kg
Copolímero en Bloque SIS para PSA y Adhesivos Termofusibles SIS-1307
MOQ: 100 kg
Resina Intermedia de Silicona SI-100 (tipo MQ)
MOQ: 200 kg
Resina DT PSA de Silicona para Aplicaciones de Alta Temperatura
MOQ: 25 kg
Resina Adhesiva de Poliacrilato a Base de Disolvente SPA-200
MOQ: 50 kg
Colofonia de Aceite Tall Grado Adhesivo TOR-WW
CAS 8052-10-6
MOQ: 500 kg
Resina de Terpeno TT-115
CAS 9003-74-1
MOQ: 500 kg
Resina Terpénica-Fenólica Agente Pegajoso TP-115
MOQ: 25 kg
Barniz de Liberación de Silicona Curable por UV SRV-200
MOQ: 50 kg
Adhesivo Acrílico a Base de Agua WA-500 (Propósito General)
MOQ: 200 kg
Dispersión de Adhesivo PU Acuoso WPU-40
MOQ: 50 kg
Preguntas Frecuentes — Adhesivos Sensibles a la Presión Productos Químicos
What are the main polymer systems used in pressure-sensitive adhesives?
Acrylic PSAs (solvent-based acrylic copolymers or acrylic emulsions) dominate the label and tape markets due to excellent UV and aging resistance, clarity, and formulatability. Natural rubber-based PSAs provide unmatched initial tack (quick stick) and are used in masking tapes and general-purpose applications. Silicone PSAs are used for medical skin contact and high-temperature applications.
What is the role of tackifier resins in PSA formulation?
Tackifier resins increase tack (initial grab), peel strength, and adhesion of base polymers. Rosin esters (hydrogenated, disproportionated) and C5/C9 hydrocarbon resins are the main types. Low softening point tackifiers increase tack; higher softening point resins increase cohesive strength. Selection depends on polymer compatibility and the required tack-peel-shear balance.
How are PSA crosslinkers used and what do they achieve?
Crosslinkers in PSAs increase cohesive strength (shear resistance) and reduce cold flow without significantly reducing tack and peel. In acrylic PSAs, aluminum acetylacetonate (Al-AcAc), isocyanates, or aziridines are added at 0.05–2% on binder. UV crosslinking using benzophenone-type initiators is used in UV-crosslinked PSA tapes. Over-crosslinking causes brittle film with poor tack — the balance is critical.
What test methods characterize PSA performance?
Standard PSA tests are: 180° peel (PSTC-101 or FINAT FTM 1), loop tack (FTM 9), and shear adhesion (FTM 8 or PSTC-107). Peel measures bond strength to substrate, tack measures initial grab, and shear measures cohesive strength. Each must be balanced for the application — labels need high tack and low shear, while industrial duct tape needs high shear with controlled peel.
How are removable and repositionable PSAs formulated?
Removable PSAs use lower-MW base polymers, selectively compatible tackifiers, and often microsphere geometry to limit substrate contact area. Acrylic microsphere PSAs (the Post-it Note technology) achieve true repositionability through partial wetting. Removable adhesion is typically 1–4 N/inch peel — enough to hold but allowing clean removal without residue, even after long storage.
How do solventborne and waterborne PSAs differ in performance?
Solventborne acrylic PSAs offer the highest performance — superior peel/shear balance, optical clarity, and aging — but VOC regulations are pushing replacement. Waterborne acrylic emulsion PSAs have closed most of the performance gap and dominate label adhesives now. Hot-melt PSAs (SBS/SIS/SEBS-based) offer 100% solids and fast processing for tape applications. Each chemistry has different processing requirements and equipment needs.
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