Shell Oil Comapny

Resolution Performance Products LLC

Simon M Li

Petrus Gerardus Kooijmans

Edward John Marx

Josef Jacobus Titus Smits

Fred R Lemley

A process for the manufacture of glycidylester compositions by (a) reacting: (i) at least one cyclohexyl anhydride compound A; (ii) at least one di-secondary or di-primary hydroxyl compound B containing two (cyclo)aliphatic hydroxyl groups; (iii), at least one di-secondary carboxylic acid or anhydride compound C; and (iv) a mono-glycidyl ester of an &#x3b1;,&#x3b1;-branched carboxylic acid compound D containing from 5 to 19 carbon atoms; and (b) reacting the carboxyl functional polyester from step (a) with an excess epihalohydrin in the presence of a base.

Process for the manufacture of glycidylester compositions

Glycidyl ester of cooh polyester and curing agent

Glycidyl ester by reacting COOH polyester with epihalohydrin

An epoxy-functional polyester storage-stable at temperatures of up to 40.degree. C. and having a Tg of more than 40.degree. C. is prepared by the reaction of an epoxy-functional polyester intermediate (III) produced by glycidating a carboxyl-functional polyester derived from (a) at least one secondary carboxyl groups-containing aromatic or cycloaliphatic dicarboxylic acid (anhydride), (b) at least one aliphatic hydroxyl groups-containing diol, (c) optionally, a compound containing one primary or secondary hydroxyl group, or a compound comprising one primary or secondary hydroxyl group and one tertiary aliphatic carboxyl group, (d) optionally, a compound comprising a tertiary aliphatic carboxyl group and two aliphatic hydroxyl groups and (e) optionally, a trihydroxyalkane or tetrahydroxyalkane; with (IV) a carboxyl-functional polyester obtained from (a) and (b) above, or (a) alone.

Epoxy-functional polyester advanced with carboxyl-functional polyester

Tetraphenolic compounds such as the tetraphenol of ethane and the tetraphenol of xylene can be prepared in a ketone/alcohol solvent medium using a cation exchange resin catalyst.

Process for preparing tetraphenolic compounds

A process is disclosed for preparing a tetrakisphenol by the reaction of a dialdehyde with a phenolic compound in the presence of a cationic exchange resin catalyst, and then subjecting a solution of the condensation product to conditions suitable for crystallization of the polyphenolic product relatively high in the tetrakisphenol species.

Process for preparing tetraphenoic compounds

Bisphenol-A is prepared by reacting an excess of phenol with acetone in the presence of a modified sulfonic acid cationic exchange resin catalyst having a plurality of sulfonic acid sites of the general formula ##STR1## in which IER represents the ionic exchange resin backbone, each a and b is an integer from 0 to about 5, and each R is selected independently from H, OH, SH and alkyl groups. The catalyst exhibits high activity and selectivity at moderate reaction temperatures, low production of colored impurities, and high stability.

Process and alkylmercaptoamine catalyst for production of bisphenol-A

Tetraphenolic compounds such as the tetraphenol of ethane and the tetraphenol of xylene can be prepared in a heterogeneous reaction mixture using an acidic cationic exchange resin catalyst. A continuous process can be most effectively carried out in the presence of an alcohol cosolvent for the reaction mixture.

Bis-phenols are isomerized in the presence of an acidic perfluorinated polymer catalyst.

Isomerization of bis-phenols

Bis(p-aminocumyl)benzenes are prepared by treating diisopropylbenzene derivatives with a primary or secondary aniline in the presence of a catalytic amount of an acidic perfluorinated polymer.

Preparation of bis(p-aminocumyl)benzenes

By-products of bis-phenol synthesis are isomerized in the presence of a mercapto modified cation exchange resin catalyst.

Isomerization of by-products of bi-phenol synthesis

By-products of bis-phenol synthesis are isomerized in the presence of an acid catalyst and a free mercaptan co-catalyst.

Isomerization of by-products of bis-phenol synthesis

Bisphenol-A is prepared by reacting an excess of phenol with acetone in the presence of a modified sulfonic acid cationic exchange resin catalyst having a plurality of sulfonic acid sites of the general formula ##STR1## in which IER represnts the ionic exchange backbone, each a and b is an integer from 9 to about 5, and each R is selected independently from H, OH, Sh and alkyl groups. The catalyst exhibits high activity and selectively at moderate reaction temperatures, low production of colored impurities, and high stability.

Process and catalyst for production of bisphenol-A

A process for preparing polyepoxides having a wide molecular weight distribution comprises reacting a liquid polyepoxide and polyhydric phenol in a first step, and reacting the resulting intermediate with additional polyhydric phenol and polyepoxide in one or more additional steps.

Process for preparing polyepoxides (II)

The invention provides a low-dusting anhydride curing agent blend for epoxy resins comprising a solid acid anhydride (trimellitic anhydride) and a normally liquid acid anhydride (methyl hexahydrophthalic anhydride. The invention further provides processes for preparing the anhydride blends and to curable epoxy compositions thereof.

Growing community of inventors

Houston, TX, United States of America

Simon M Li