Steven E Hopper

US Patent:

6350894, Feb 26, 2002

Filed:

Mar 10, 2000

Appl. No.:

09/523336

Inventors:

Craig A. Bonda - Wheaton IL
Steven P. Hopper - Glen Ellyn IL

Assignee:

The C.P. Hall Company - Chicago IL

International Classification:

C07C 6988

US Classification:

560 67

Abstract:

A sunscreen composition containing a UV-B dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4â-methoxydibenzoylmethane (PARSOL 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative selected from formula (I) and formula (II), and mixtures thereof: wherein m=5, 7, 9 or mixtures and n=4, 6, 8 or mixtures; wherein p1 m=5, 7 or mixtures and n=4, 6 or mixtures. These long branched chain alkyl hydroxybenzoates and long branched chain benzoates having a C branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.

US Patent:

57889546, Aug 4, 1998

Filed:

Nov 12, 1997

Appl. No.:

8/967121

Inventors:

Craig A. Bonda - Wheaton IL
Steven P. Hopper - Glen Ellyn IL

Assignee:

The C. P. Hall Company - Chicago IL

International Classification:

A61K 742
A61K 3124
A61K 3112
A61K 700

US Classification:

424 59

Abstract:

A sunscreen composition containing a UV-A dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL. RTM. 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative having formula (I): ##STR1## wherein m=5, 7, 9 or mixtures and n=4, 6, 8 or mixtures; These long branched chain alkyl salicylates having a C. sub. 4. sup. + branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.

US Patent:

57770140, Jul 7, 1998

Filed:

Dec 3, 1996

Appl. No.:

8/753925

Inventors:

Steven P. Hopper - Glen Ellyn IL
Kimberly L. Stefanisin - Oak Lawn IL
Ronald D. Svoboda - Hickory Hills IL

Assignee:

The C.P. Hall Company - Chicago IL

International Classification:

C08J 510

US Classification:

524308

Abstract:

A plasticized polyvinyl chloride (PVC) resin composition and method of plasticizing and decreasing the hydrophobicity of said PVC resin for adherence of aqueous coating compositions, such as water-based inks, by incorporating into the PVC resin a polymeric plasticizer for PVC, a monomeric diacid plasticizer, comprising primarily a C. sub. 5, C. sub. 4 or C. sub. 3 diacid plasticizer, or mixtures, in a ratio of polymeric/monomeric plasticizers of 5/95 to 95/5, preferably 90/10 to 60/40, and at least about 0. 1%, based on the weight of the PVC resin, of a metal salt additive, wherein the metal salt is an oxide or a hydroxide and has an oxidation state of plus two, three or four, preferably calcium oxide and/or calcium hydroxide. The monomeric/polymeric plasticizer combination together with the metal salt additive(s) unexpectedly decreases the hydrophobicity of the PVC surface for strong adherence of water-based inks and coatings thereto.

US Patent:

57831734, Jul 21, 1998

Filed:

Nov 21, 1996

Appl. No.:

8/752585

Inventors:

Craig A. Bonda - Wheaton IL
Steven P. Hopper - Glen Ellyn IL

Assignee:

The C. P. Hall Company - Chicago IL

International Classification:

A61K 742
A61K 3124
A61K 3112

US Classification:

424 59

Abstract:

A sunscreen composition containing a UV-B dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative selected from formula (I) and formula (II), and mixtures thereof: ##STR1## wherein m=5, 7, 9 or mixtures and n=4, 6, 8 or mixtures; ##STR2## wherein m=5, 7 or mixtures and n=4, 6 or mixtures. These long branched chain alkyl hydroxybenzoates and long branched chain benzoates having a C. sub. 4. sup. + branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.

US Patent:

58492739, Dec 15, 1998

Filed:

Dec 4, 1997

Appl. No.:

8/984765

Inventors:

Criag A. Bonda - Wheaton IL
Steven P. Hopper - Glen Ellyn IL

Assignee:

The C. P. Hall Company - Chicago IL

International Classification:

A61K 742
A61K 3124
A61K 3112
A61K 700

US Classification:

424 59

Abstract:

A sunscreen composition containing a UV-A dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL. RTM. 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative having formula (I): ##STR1## These long branched chain alkyl salicylates having a C. sub. 4 branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.