Mobil Oil Corporation

Johnson & Johnson Consumer Products, Inc.

Colgate Palmolive Company

Union Camp Corporation

Rhone-poulenc Agrochimie

Albert C Chen

Kevin G Yost

Douglas J Hohlbein

John R Kent

Donald S Mueller

Peter Hrinko, Jr

Kenneth Gerald Waguespack

Thomas M Dair

David L Siegfried

George L Brown

Robert D DeLuca

Robin M Jones

Carlos J Martinez

Daniel J Formosa

Frank A Nagy

Peter Stathis

Martin Howard Klee

Dena L Boxler

Mary S Yeganeh

David B Stowell

Toothbrush head

A toothbrush having a novel bristle configuration and trim pattern is described. The bristles of the tufts are of varying lengths and are so arranged to form a concave shape resembling the shape of a rubber prophy cup used by dentists and hygienists for polishing teeth. The individual bristles are of varying length and so placed into or mounted in the head to yield tufts having the same concave shape but without the requirement for trimming the bristle ends. In a variant construction, the upper ends of a number of tufts are so contoured, either by trimming or by insertion of various length bristles, that each tuft upper end has a surface which is a portion of a larger concave surface. Thus in one type of arrangement each tuft has its own prophy brush shape at its upper end. In another type of arrangement there is only one prophy brush shape for the entire head, each tuft making its own partial contribution to the single prophy shape. In between these two arrangements, other arrangements are possible, with each subset of the total number of tufts defining a single prophy shape. The tufts may be single-bristle tufts, as well as the more common plural bristle tufts.

Prophy toothbrush

The present invention relates to an improved bristled article and more particularly to an improved toothbrush which has a tuft cavity with a cross-sectional area that decreases such that the tuft cavity is broadest at the open top end and becomes narrower toward the closed bottom end of the tuft cavity. This decrease of the breadth of the tuft cavity results in a greater packing factor in the closed bottom end portion of the cavity than in the open top end and provides higher bristle retention force.

Bristled article

Toothbrush handle

The adhesive strength of alumina brackets to acrylic adhesive cements is enhanced by forming an essentially silica coating on the bonding surface of the bracket by the steps of coating said surface with an organosilicon compound such as a silane and then pyrolyzing the organosilicon coating to volatilize the organic components thereof to thereby leave an essentially silica coating.

Adhesive primer for alumina brackets

A stain resistant no-mix orthodontic adhesive is disclosed. The adhesive comprises:

Stain-resistant no-mix orthodontic adhesive

Polyamide and poly(ester-amide) materials are melt-blended to give products having good flexibility at high and low temperatures. The blends are useful for potting, encapsulating, and adhesive applications.

Polymer blends

This invention provides a graft copolymer of at least one acrylic monomer and chlorinated natural or synthetic rubber, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides aqueous dispersions of such graft copolymers and coating compositions containing them.

Water dispersible acrylic modified chlorinated rubber

This invention provides deodorized compositions and methods for preparing deodorized compositions comprising at least one odoriferous N-vinyl monomer (e.g., N-vinyl-2-pyrrolidone), and a sufficient deodorizing amount of an alkali metal bisulfite (e.g., NaHSO.sub.3).

Deodorization of N-vinyl monomers

Dimethyl dichlorovinylcyclopropyl carboxylic acid esters of substituted (alkyl, aryl, halo, amino, etc.) polycyclic alcohols are insecticidal.

Novel polycyclic insecticidal esters

Radiation curable compositions particularly suitable for use by electron beam are disclosed, comprising a monomer of the formula: ##STR1## in which R.sub.1 is H or alkyl of 1 to 4 carbon atoms;

Carbonate-acrylate or alkylacrylate radiation curable coating

3-Phenoxybenzyl hydroxamates of pyrethroid acids and derivatives are insecticidal.

Insecticidal phenoxy hydroxamates

Poly-1,2-epoxy resins, such as diglycidyl ethers of bisphenols, are hydrolyzed at high solids content in organic solvents, such as hexoxyethanol. The hydrolyzed epoxy resins are used in coating formulations (aqueous emulsions or solutions) together with curing agent and, optionally, a catalyst for cross-linking.

Coatings based on hydrolyzed epoxy resins

Thermally cross-linkable emulsifying agents are provided by reacting a polyoxyalkylene glycol with an excess of aminoplast resin sufficient to enable one molecule of the aminoplast resin to be reacted onto each end of the glycol. These agents markedly reduce the surface tension of water and are effective emulsifying agents and, when used in aqueous emulsion coating compositions to emulsify a water insoluble resinous component, the cross-linkable emulsifying agents provide Newtonian flow characteristics and they react when the deposited film is baked to resist extraction from the cured film.

Growing community of inventors

East Brunswick, NJ, United States of America

Albert C Chen