Construction — Process Challenge

湿気硬化型(RTV)シーラント用シラン架橋剤

1液型RTVシリコーンおよびシラン変性ハイブリッドシーラントは、アルコキシ・アセトキシ・オキシム系架橋剤と大気中水分の反応により硬化;架橋剤(および触媒)の選択が必要
Updated Jun 2026
ソリューションアプローチ

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
System & Substrate Assessment
Define the binder system (waterborne, solventborne, UV, powder), substrate, cure, and the VOC, durability, and appearance targets.
2
Additive & Resin Selection
Match resins, pigments and fillers, dispersants, rheology modifiers, defoamers, or biocides to the formulation and compatibility window.
3
Lab Let-Down & Optimization
Dial in loading and addition order through lab let-downs, checking dispersion, rheology, film properties, and storage stability.
4
Application & Performance Testing
Validate on the real application method and substrate, tracking gloss, adhesion, sag, cure, and weathering before scale-up.
Recommended Chemistries (9)
Methyltriacetoxysilane
CAS 4253-34-3
シラン・有機シラン
Acetoxysilane for RTV sealants
Acetoxy crosslinker for 1-part RTV silicone — hydrolyzes with ambient moisture releasing acetic acid and forming the siloxane network
Vapor Pressure: 0.2
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Methyltris(Methylethylketoxime)Silane
CAS 22984-54-9
シラン・有機シラン
Oximosilane for non-corrosive sealants
Oximosilane crosslinker for neutral/non-corrosive RTV sealants, releasing MEK-oxime instead of acid so it is safe on metals/masonry
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Vinyltris(2-Methoxyethoxy)Silane
CAS 1067-53-4
シラン・有機シラン
湿気硬化系向けビニルシラン
Methoxyethoxy crosslinker used in moisture-cure and silane-modified polymer sealants for controlled cure rate
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Vinyl-Terminated Polydimethylsiloxane (Vinyl PDMS)
CAS 68951-99-5
シリコーンフルード・オイル
Reactive silicone for crosslinked films
Reactive silicone base polymer that is end-crosslinked into the cured RTV elastomer network
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3-aminopropyltrimethoxysilane
CAS 13822-56-5
シラン・有機シラン
Methoxy analog — faster hydrolysis
CAS correct for APTMS. Primary aminosilane adhesion promoter — the workhorse for wet-adhesion to mineral/metal substrates in moisture-cure RTV/hybrid sealants; trimethoxy groups co-condense into the curing network. Genuine fit.
Physical Description: Clear to straw-colored liquid with an ammoniaca…
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ビニルトリメトキシシラン
CAS 2768-02-7
シラン・有機シラン
Vinyl silane for polyethylene crosslinking
CAS correct for VTMO. Classic water-scavenger/drying agent (and alkoxy-cure crosslinker) in one-part moisture-cure PU/MS/silicone systems, consuming trace can moisture to prevent premature gel. Genuine fit.
融点:ˆ'97°C   沸点:123°C at 1013 hPa (converted to 101.3 kPa) (760…   密度:Specific Density: 0.94 (water = 1)
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3-(2-Aminoethylamino)propyltrimethoxysilane
CAS 1760-24-3
シラン・有機シラン
Diamine silane for enhanced adhesion
CAS correct for AEAPTMS (diaminosilane, A-1120/DAMO class). The most common sealant adhesion promoter; stronger durable bonding on masonry/glass than the mono-amine, trimethoxy grafts into the elastomer. Genuine fit.
Physical Description: Light yellow liquid   Vapor Pressure: 0.03
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3-glycidoxypropyltriethoxysilane
CAS 2602-34-8
シラン・有機シラン
Ethoxy analog — slower hydrolysis, better storage
PubChem confirms CAS 2602-34-8 = triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane (C12H26O5Si). Epoxy-functional, non-amine/non-yellowing adhesion promoter for SMP/hybrid moisture-cure sealants; ethoxy groups condense into the cure. Genuine fit (ethoxy-cure niche vs the common trimethoxy A-187, but real).
Physical Description: 液体
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3-glycidoxypropyl methyldiethoxy silane
CAS 2897-60-1
Monoalkyl epoxy silane for flexible crosslinks
PubChem confirms CAS 2897-60-1 = diethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane (C11H24O4Si). Difunctional epoxysilane adhesion promoter; the single methyl caps one hydrolyzable site to limit added crosslink density, keeping cured modulus/elongation in spec. Genuine fit.
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