Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Adhesives and Rubbers

Stable-free-radical-polymerization-processes-and-compositions-thereof

Coating composition of an acrylic polymer having ethylenically unsaturated groups and an acrylic polymer having primary amine groups

The coating composition contains about 20-80% by weight of binder and 80-20% by weight of a ...

Catalysts for the polymerization of olefins

We claim: 1. A catalyst-forming component for use in preparing catalysts for the polymerization of ...

***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST*** *** NO IMAGES AVAILABLE*** Homogeneous-heterogeneous catalyst system for polyolefins

OF THE INVENTION The multi-catalyst system of the present invention is useful in the ...

Catalyst for polymerizing an olefin and method for producing an olefin polymer

We claim: 1. A catalyst for polymerizing an olefin which consists essentially of a product obtained ...

Process for preparing biaxially oriented polypropylene film suitable for twist wrapping

It is therefore an object of the instant invention to provide a multilayered, coextruded, highly ...

Process for the production of a biaxially highly oriented polypropylene film

The propylene polymer of the base ply (or single ply, if there are no top plies) is preferably ...

Process for making a drag shield for a power mower

With the problems of the prior art in mind, the present invention includes two opposing and spaced ...

Process for producing a chloromethylated polymer

We claim: 1. A process for producing a chloromethylated polymer by reacting styrene polymer ...

Graft polymers of vinyl chloride on unsaturated olefinic elastomers and process for the preparation thereof

Having thus described our invention, what we desire to secure by Letters Patent and hereby claim is:...

Method of polymerizing vinyl halide with olefin polymers and copolymers and compositions thereof

What is claimed is: 1. In a process for the preparation of a vinyl chloride polymer comprising ...

Stable free radical polymerization processes and compositions thereof

Details

Inventors: Kazmaier, Peter M.; Keoshkerian, Barkev; Loutfy, Rafik O.; Moffat, Karen A.; Georges, Michael K.; Hamer, Gordon K.; Veregin, Richard P. N.;
Assignee: Xerox Corporation (Stamford, CT)
Primary Examiner: Berman; Susan W.
Assistant Examiner:
Attorney, Agent or Firm: Palazzo; E. O.

A free radical polymerization process for the preparation of polymer comprising: a first heating and photoinitiating with ultraviolet light of a mixture comprised of a stable free radical agent, and at least one polymerizable monomer compound; optionally cooling said mixture; a second heating of said mixture at a temperature of from about 100.degree. C. to about 160.degree. C.; isolating the polymer product formed; and optionally washing and drying said polymer.

DETAILED DESCRIPTION What is claimed is: 1.
A free radical polymerization process for the preparation of polymer having a narrow polydispersity from about 1.
05 to about 1.
95 comprising; photoinitiating with ultraviolet (UV) light in the presence of a first heating of a mixture comprised of a stable free radical agent, and at least one polymerizable monomer compound, and wherein said first heating is at a temperature of from about a -40.
degree.
C.
to about 110.
degree.
C.
; cooling said mixture; a second heating of said mixture at a temperature of from about 100.
degree.
C.
to about 160.
degree.
C.
; isolating the polymer product formed; and optionally washing and drying said polymer.
2.
A process in accordance with claim 1 wherein said first heating is at a temperature of from about a minus 20.
degree.
C.
to about 60.
degree.
C.
3.
A process in accordance with claim 2 wherein said second heating is at a temperature of from about 120.
degree.
C.
about 160.
degree.
C.
4.
A process in accordance with claim 2 wherein the resin product is isolated by precipitation in a nonsolvent, followed by filtration.
5.
A process in accordance with claim 1 wherein said first heating is at a temperature of about 25.
degree.
C.
6.
A process in accordance with claim 1 wherein said second heating is at a temperature of from about 120.
degree.
C.
about 160.
degree.
C.
7.
A process in accordance with claim 1 wherein said at least one polymerizable monomer compound is from 1 polymerizable monomer compound to about 5 different kinds of polymerizable monomer compounds.
8.
A process in accordance with claim 1 wherein said polymerizable monomer is styrene.
9.
A process in accordance with claim 1 further including adding a photoinitiator component prior to or during said first heating.
10.
A process in accordance with claim 9 wherein said photoinitiator component is selected from the group consisting of benzoin, disulfide, aralkyl ketone, oximinoketone, peroxy ketone, acyl phosphine oxide, and diamino ketone.
11.
A process in accordance with claim 9 wherein said photoinitiator component is 1-hydroxycyclohexyl phenyl ketone

Related patents

	Recording liquid, printed product and ink jet recording method What is claimed is: 1. A recording liquid comprising: carbon black having a DBP oil absorption of at least 140 ml/100 g and an average particle size of from 0.01 to 0.4 ....
	Thermoplastic elastomer composition OF THE INVENTION The thermoplastic elastomer composition of the invention comprises 100 parts by weight of a polyester block copolymer and 0.05 to 20 parts by weight of ...
	Intercalations of crystalline lithium aluminates As shown in the above patents which are incorporated herein by reference, hydrous alumina, represented by the formula Al(OH).sub.3, may be suspended in an ion exchange ...
	Surface wettable silicone hydrogels OF THE INVENTION The crosslinked polymeric network found in the hydrogels of the present invention are believed to be formed, in part, from the polysiloxane prepolymer ....
	High voltage insulating compositions containing phosphorus compounds OF THE PREFERRED EMBODIMENTS OF THE INVENTION Preferred phosphorus compounds for use in the invention are (a) compounds of Formula I, II or III above wherein each of ...
	Flame retardant polyphenylene oxide thermoplastics What is claimed is: 1. A flame retardant thermoplastic blend comprising by weight (A) 100 parts of polyphenylene oxide, (B) 20 to 300 parts of styrene resin and (C) 0.01 ...
	Film and sheet capable of forming retortable and easy-open packagings OF THE PREFERRED EMBODIMENT Applicants have found that a wrappable film may be made which is capable of forming peel seals and comprises a mixture containing from about ...
	Hot melt adhesive What is claimed is: 1. A hot melt adhesive composition for bonding polypropylene substrates, said composition comprising: (a) about 20% to abut 35% by weight of an ...
	Flame retardant compositions What is claimed is: 1. The flame retardant polymer composition comprising a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated ...
	Oil resistant thermoplastic elastomer The thermoplastic elastomer compositions produced according to the process of the present invention exhibit good oil resistance and a good balance between compression ...

0.004
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved