Dietmar Kalz

45379912, Aug 27, 1985

Nov 30, 1983

6/556680

Ellis Margaret D. - Mount Pleasant SC
Richard L. Ferencz - Mount Pleasant SC
Dietmar Kalz - Summerville SC

Mobay Chemical Corporation - Pittsburgh PA

C07C103127
C07C10200

564133

The present disclosure is concerned with a process of reacting a solid aromatic amine with liquid acetic anhydride to yield a solid amide. The amine is in a flowable particulate form and it is subject to sufficient agitation during the reaction to prevent agglomeration. The amide is recovered as a flowable particulate by evaporation of the acetic acid by product and any excess acetic anhydride.

44682301, Aug 28, 1984

Mar 25, 1983

6/478953

Thomas J. Thomas - Summerville SC
Robert G. Hoguet - Summerville SC
Charles W. Sandefur - Summerville SC
Dietmar Kalz - Summerville SC

Mobay Chemical Corporation - Pittsburgh PA

D06P 6700

8528

The present disclosure is concerned with aqueous dispersions of anionic acid dyes, especially the monosulphonated level dyeing acid dyes, which have low room temperature, low shear viscosities and good storage stability. This low viscosity enables them to be readily poured, pumped and otherwise handled. These dispersions comprise dyestuff solids with a controlled particle size distribution having a median value between about 1 and 10 microns; an anionic dispersant; and an electrolyte. In a preferred embodiment the pH is adjusted to give an optimum viscosity value. Another preferred feature is the adjustment of the rheology with a thickening agent such as xanthan gum. These dispersions find particular utility in the continuous dyeing of carpet, especially in Kuesters or foam dyeing equipment.

45499802, Oct 29, 1985

Oct 11, 1983

6/540748

Susan M. Morris - John's Island SC
Thomas J. Thomas - Summerville SC
Dietmar Kalz - Summerville SC

Mobay Chemical Corporation - Pittsburgh PA

C07D25154
C09K 1106
C11D 342
D06L 312

25230123

The present invention is concerned with the modification of the sodium salt of a known optical brightener to obtain a white crystalline material. The commercially available 4,4'-bis-(2-anilino-4-phenylamino-1,3,5-triazinyl-6-amino)-stilbene-2,2'-d isulphonic acid is neutralized with a sodium base such as caustic and exposed to temperatures above about 65. degree. C. as an aqueous slurry containing some undissolved disodium salt. The water solubility of this salt may be inhibited by the addition of an electrolyte and the product may be recovered by spray drying.

44351810, Mar 6, 1984

Apr 21, 1982

6/370426

Robert G. Hoguet - Summerville SC
Dietmar Kalz - Summerville SC
Thomas J. Thomas - Summerville SC
Henry T. Whetsell - Summerville SC
Joachim Wolff - Cologne, DE
Konrad Nonn - Leverkusen, DE
Karl-Heinz Wolf - Leverkusen, DE

Mobay Chemical Corporation - Pittsburgh PA
Bayer Aktiengesellschaft - Bayerwerk

D06P 6700

8527

The present disclosure is concerned with storage stable concentrated fluid aqueous dispersions of water soluble cold dyeing fiber reactive dyes. These dispersions contain anionic or polyvinyl dispersants to provide resistance against settling or agglomeration and water soluble electrolytes to provide resistance against hydrolysis of the fiber reactive groups. The dispersions have an average particle size of less than 100 microns and in a preferred embodiment sufficient buffering agent to stabilize the pH at between about 5 and 8.