Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 5985972 | Acrylic sheet having uniform distribution of coloring and mineral filler before and after thermoforming The present invention is drawn to a composition and thermoformable sheets and articles made therefrom. In the present invention, ranges of chain-transfer agents, thixotropic agents, and mineral filler content are balanced to minimize migration or maldistr... | 11/16/1999 |
| 5911943 | Method of thermoforming a sheet material The present invention relates to a method of thermoforming a sheet material around an insert to make a thermoformed article. The sheet material may include poly(methyl) methacrylate and other thermoplastic sheet material. The inserts become an integrated ... | 06/15/1999 |
| 5877354 | Process for making isophorone with improved color and color stability The present invention is a process for the production of isophorone having improved color and color stability. Crude isophorone is selectively hydrogenated to remove color forming impurities. The product isophorone will have an APHA color of about 10 or l... | 03/02/1999 |
| 5837177 | Controlled nucleation of polypropylene in biaxially oriented films A method of making a polypropylene product for use in making biaxially oriented films. The method includes the addition of an improved nucleating system that allows for even distribution of a nucleating agent in the polymer material. The improved nucleati... | 11/17/1998 |
| 5821296 | Polyurethane-polyester hybrid resin system having improved stability The present invention is drawn to a polyurethane-polyester hybrid resin system wherein the components of the system have improved shelf life stability. The resin system comprises an A-Side comprising a multifunctional isocyanate and a free radical initiat... | 10/13/1998 |
| 5814291 | Simplified synthesis of anion intercalated hydrotalcites The present invention is one-step method for synthesizing a synthetic anion intercalated hydrotalcite material. The method comprises reacting an aluminum source with a magnesium source in the presence of an inorganic acid of the anion to be intercalated, ... | 09/29/1998 |
| 5780546 | Bisphenol-A based polymers having low organic emissions A low organic emission composition comprising a di-alkoxylated bisphenol-A dimaleate urethane dimethacrylate hybrid resin, an alkoxylated bisphenol-A diacrylate or dimethacrylate, ethylene glycol dimethacrylate and other vinyl monomers. The composition is... | 07/14/1998 |
| 5747154 | Acrylic sheet having uniform distribution of coloring and mineral filler before and after thermoforming Ranges of chain-transfer agents, thixotropic agents, and alumina trihydrate content are balanced to minimize migration or maldistribution of coloring matter and alumina trihydrate during curing of methyl methacrylate in a syrup including polymethylmethacr... | 05/05/1998 |
| 5741873 | Low organic emission resins The present invention relates to a composition comprising at least one alkoxylated bisphenol-A diacrylate or dimethacrylate, ethylene glycol dimethacrylate, and at least one vinyl monomer. The composition is suitable for use in the fiberglass reinforced p... | 04/21/1998 |
| 5705552 | Thermoformable acrylic sheet having uniform distribution of color and mineral filler A composition suitable for making thermoformable sheets and the like. The composition comprises a crosslinked poly (methyl methacrylate) typically having uncrosslinked poly (methyl methacrylate) dispersed therein. The composition a comprises 0.5 to about ... | 01/06/1998 |
| 5571863 | Laminating resins having low organic emissions (II) A laminating resin is made from (1) an unsaturated polyester resin comprising maleic acid, phthalic acid, and glycol(s), (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) ethylene glycol dimethacrylate. The resin requires no styrene t... | 11/05/1996 |
| 5567767 | Laminating resins having low organic emissions (I) A laminating resin is made from (1) an unsaturated polyester resin, (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) vinyl toluene. The resin requires no styrene to achieve excellent laminating resin properties, and is significantly ... | 10/22/1996 |
| 5567766 | Laminating resins having low organic emission (III) A laminating resin is made from (1) an unsaturated polyester resin, (2) a diacrylate or dimethacrylate of alkoxylated bisphenol-A, and (3) styrene, divinyl benzene or a combination thereof. The resin achieves excellent laminating resin properties, and is ... | 10/22/1996 |
| 5567745 | Acrylic sheet having uniform distribution of coloring and mineral filler before and after thermoforming Ranges of chain-transfer agents, thixotropic agents, and alumina trihydrate content are balanced to minimize migration or maldistribution of coloring matter and alumina trihydrate during curing of methyl methacrylate in a syrup including polymethylmethacr... | 10/22/1996 |
