Air Products and Chemicals, Inc.

Evonik Degussa Gmbh

Evonik Operations Gmbh

Veonik Degussa Gmbh

Stephen Michael Boyce

Gauri Sankar Lal

Gamini Ananda Vedage

Dilipkumar Nandlal Shah

Atteye Houssein Abdourazak

Pritesh G Patel

Sudhir Ananthachar

Shafiq Fazel

David Alan Dubowik

Michael Ulman

The present invention relates to a polyurea coating composition comprising (A) a polyisocyanate; (B) a polyaspartic ester; and (C) an aspartic ester. The polyaspartic ester (B) is represented by the structure below:

Polyurea compositions from polyaspartic esters and secondary heterocyclic amines derived aspartic esters

Polyamide and amidoamine curing agents comprising a selectively modified amine. The selectively modified amine is formed by a substitution reaction between a polyamine and an epoxide, resulting in a multifunctional amine having a hydroxyl substituent. The curing agents are used to form epoxy resins having improved properties when cured.

Polyamides and amidoamines derived from hydroxyalkylpolyamines: epoxy curing agents with improved properties

The present invention relates to a PVC plastisol composition comprising at least one vinyl chloride polymer selected from polyvinylchlorides and copolymers of vinyl chloride with one or more monomers; at least one plasticizer; at least one epoxy resin; and at least one isocyanate resin blocked with cardanol. The PVC plastisol composition of this invention provides strong adhesion to the surface of various metals or various undercoats of metals by thermal treatment for a short time at 100&#xb0; C.-200&#xb0; C. and is excellent in storage stability. In addition, it offers good rheological properties with improved yield value dosing and viscosity stability during applications compared to the nonylphenol blocked isocyanate PVC adhesion promotor.

Cardanol blocked isocyanate adhesion promotor for PVC plastisol

An epoxy curing agent is disclosed that can be obtained by reacting at least one carboxylic acid with at least one polyamine. The disclosed curing agent can be obtained by preparing an amidoamine with about 0.15 to about 0.30 molar excess of carboxylic acid.

Amidopolyamines with enhanced gel-time for elevated temperature applications

An epoxide based composition that can be cured at a temperature of less than about 70 C is disclosed. The composition is a liquid at ambient conditions and, therefore, can be used to rehabilitate the interior surfaces of pipelines. The epoxide-based composition comprises at least one epoxide component (component A) and at least one curing agent component (component B) wherein

Epoxide-based composition

Liquid epoxy curing agents that have improved latency over conventional liquid curing agents while retaining the physical properties of the cured material are disclosed. These liquid curing agents can be used for curing epoxy resins, or in combination with dicyandiamide (DICY) based curing agents in order to accelerate DICY curing.

One component epoxy curing agents comprising hydroxyalkylamino cycloalkanes

The disclosure relates to solving problems associated with conventional latent epoxy curing agents by providing a new class of latent epoxy curing agents. In particular, the disclosure relates to epoxy curing agents with improved storage stability and low use level (e.g., less than about 10 wt % relative to the epoxy compound) by forming solid solutions of certain classes of amines in polyphenolic resins.

Amines and polymeric phenols and usage thereof as curing agents in one component epoxy resin compositions

Carboxylic acid salts of tertiary amines for use as an accelerator for an anhydride based epoxy curing agents are disclosed. The disclosed carboxylic acid salts of certain tertiary amines are latent anhydride accelerators and enable epoxy resin curing when heated to an elevated temperature (e.g., an onset temperature of greater than about 50&#xb0; C.).

Anhydride accelerators for epoxy resin systems

This invention relates to improved polyepoxide resins cured with a mixture of methylene bridged poly(cycloaliphatic-aromatic)amines and a process for preparing such polyepoxide resins as well as to the methylene bridged poly(cycloaliphatic-aromatic)amine compositions and a method of making them. The improvement resides in using a curative (herein referred to as 'Heavy MPCA') comprised of the partially hydrogenated condensation product of formaldehyde and aniline or methyl substituted aniline containing a substantial amount (from 35 to 85% by weight, preferably 40 to 60% by weight) of oligomers in the form of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15 aniline or methyl substituted aniline derivatives.

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Bath, PA, United States of America

Stephen Michael Boyce