K-PURE^®
Specialty Chemicals for Electronic Applications

K-PURE Thermal Acid Generators - The K-PURE Thermal Acid Generator (TAG) product line is based upon several different sulfonic acids and three types of blocking technologies. The blocking group makes the catalyst inactive in the formulation during storage prior to use. After application exposure of the coating to elevated temperatures results in deblocking of the TAG, allowing the active acid to catalyze the desired acid catalyzed reaction. Current products deblock at temperatures between 90°C and 195°C. Products are supplied with metal content as low as 100 ppb. King has over 30 years experience in all facets of latent catalysis and can tailor specific characteristics such as the deblocking temperature for your individual application. Our technical service staff can help you select the best TAG to meet your particular performance requirements.

TAGS	Acid Type	Blocking Group	Onset Cure*   (°C)	Full Cure* (°C)	Technical Data Sheet
K-PURE TAG-2181	DDBSA	Covalent	125	140
K-PURE TAG-2678	Triflic	Quaternary	125	155
K-PURE TAG-2689	Triflic	Quaternary	135	165
K-PURE TAG-2278	p-TSA	Quaternary	125	130
K-PURE TAG-2700	Nonafluoric	Quaternary	125	155
K-PURE TAG-2172	DDBSA	Amine	150	190
K-PURE TAG-2168E	DDBSA	Amine	155	190
K-PURE TAG-2396	DNNSA	Amine	160	195
K-PURE TAG-2179	DDBSA	Amine	165	195
*Cure temperatures based on 1,500 nm coating , 15 minute bake, PGMEA puddle - 5 minutes on glass in a model polyacrylate/glycoluril ARC

K-PURE® Organic Corrosion Inhibitors

K-PURE Corrosion Inhibitors are currently based upon 3 different active molecules. All organic in structure, each product is uniquely designed for effectiveness in different applications, including CMP, cleaners and other electronic applications.

INHIBITOR	TYPE	ATTRIBUTES	Technical Data Sheet
K-PURE CDI-4301	Dinonylnaphthalene Sulfonate (DNNS)/Carboxylate/Amine	Water soluble corrosion inhibitor that can be used in CMP and aqueous systems. Leaves extremely thin hydrophobic films. Effective on a range of metals including aluminum.
K-PURE CDI-4302	Modified Triazole Compound	Water soluble corrosion inhibitor designed to protect copper in aqueous formulations.
K-PURE CDI-4303	Amino Acid Derivative	Water soluble inhibitor that can also be used in combination with CDI-4302.

K-PURE® Hydroxyl Functional Modifiers
For Cationically Cured Epoxy Systems

K-Pure polyester polyols are unique reactive modifiers designed to improve properties of cationically cured epoxy systems. These polyester polyols have a low molecular weight and a narrow molecular weight distribution compared to traditional polyester resins. They are based on a linear, saturated aliphatic structure with pendant hydroxyl groups. In all cases, K-PURE polyols are used to improve the cured properties of epoxy systems such as hardness, flexibility, resistance and crosslinking density depending on the product selected. K-Pure CDR-3320 is a low viscosity, acetoacetate functional reactive diluent with excellent compatibility with a wide range of resins. It is also effective in amino-crosslinked
systems.

RESIN MODIFIER	COMPOSITION	HYDROXYL # ON SOLIDS	ATTRIBUTES	Technical Data Sheet
K-PURE CDR-3314	100% Active Polyester Polyol	230	Improves flexibility and humidity resistance while  maintaining hardness. Excellent adhesion to many substrates.
K-PURE CDR-3315	100% Active Polyester Polyol	140	Flexibility modifier for cationic epoxies. Best flexibility at low concentrations.
K-PURE CDR-3318	100% Active Polyester Polyol	160	Best elongation with increase in hardness.
K-PURE CDR-3319	100% Active Polyester Polyol	105	Most dramatic reduction in modulus. Low viscosity 100% solids.
K-PURE CDR-3320	Acetoacetate Polyol	Equivalent Weight 190	Designed to be used as an additive for epoxy systems to improve adhesion and corrosion resistance to copper.

K-PURE® Epoxy Catalysts

K-PURE super acid catalysts are designed specifically for thermally cured epoxies. King Industries has developed a range of products to suit the needs of many different systems. From fast, low temperature cure to more latent systems which do not cure until 180°C or higher.

King has the flexibility to tailor catalysts to give you the right balance of cure and stability. The cationic mechanism also gives you the formulating latitude to take advantage of coreactants such as oxetane and vinyl ethers as well as hydroxyl functional epoxy modifiers to lower modulus, improve elongation, and vary hardness to meet the needs of today's high performance electronic applications.

CATALYST	COMPOSITION	MINIMUM CURE	DESCRIPTION	Technical Data Sheet
K-PURE CXC-1612	Blocked SbF6 100% Solids	80˚C	Fastest catalyst available, Excellent storage stability.
K-PURE CXC-1613	Triflic / Metal Salt In Butanol	70˚C	2 K Systems
K-PURE CXC-1614	Blocked Triflic 100% Solids	100˚C	Excellent stability Available with low metals
K-PURE CXC-1615	Blocked Triflic In DPGME	160˚C	Highest temperature stable Triflate

Downloadable K-PURE Product Guide