Frank L. Glavis - Rydal PA David H. Clemens - Willow Grove PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C07C 8730 C08F 3600 C07C 8729
US Classification:
2605676M
Abstract:
This invention relates to vinylbenzyl and crosslinking bis-(vinylbenzyl) monomers for use in the preparation of polymers, especially ion exchange resins, and to methods for the preparation of the monomers and polymers. It is particularly concerned with the preparation, polymerization, and use of new nitrogenous monomers as crosslinking agents and/or function-introducing agents.
Method Of Preparing Resins Containing Sulfonic Acid Functionality Involving Oxidation Of Thiouronium Salts With Hydrogen Peroxide
David H. Clemens - Willow Grove PA Raymond J. Lange - Wheelersburg OH
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C08F 806
US Classification:
260 21R
Abstract:
Resins containing sulfonic acid functionality may be prepared by reacting a chloromethylated polymer matrix with thiourea and then oxidizing the resulting isothiouronium salt to the sulfonic acid in the presence of hydrogen peroxide, either directly or with the intermediate isolation of the thiol.
Method Of Decolorizing Sugar Solutions With Hybrid Ion Exchange Resins
James Henry Barrett - Neshaminy Valley PA David Henry Clemens - Willow Grove PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C13D 314
US Classification:
127 46A
Abstract:
Hybrid copolymers are prepared by at least partially filling the voids of a macroreticular copolymer with a gel-type, cross-linked copolymer of either the same monomers or a copolymer of different type monomers. The hybrid copolymers can be readily converted into ion exchange resins. Such resins have markedly improved physical and chemical properties, including improved ion exchange properties. Such resins are also especially useful for decolorizing sugar solutions.
Ion Exchange Resins Derived From Hybrid Copolymers
James H. Barrett - Cornwells Heights PA David H. Clemens - Willow Grove PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C08F 1208 C08F 1236 C08F 1600 C08F 200
US Classification:
260 21R
Abstract:
Hybrid copolymers are prepared by at least partially filling the macropores of a macroreticular ion exchange resin with a gel type, crosslinked copolymer of either the same monomers or a copolymer of different type monomers. The hybrid copolymers can be readily converted into ion exchange resins. Such resins have markedly improved physical and chemical properties, including improved ion exchange properties.
Desalination Process Using Thermally Regenerable Resins
James H. Barrett - Cornwells Heights PA David H. Clemens - Willow Grove PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
B01D 1504 B01D 1506
US Classification:
210 32
Abstract:
A process for desalinating water containing mineral salts utilizes thermally regenerable hybrid resins. A preferred embodiment provides for the desalination of saline water using hybrid resins comprising per hundred parts of macroreticular host polymer, a guest phase ranging from 50 to 300 parts by weight.
Preparation, Polymerization, And Use Of New Bis-Vinylbenzyl Nitrogenous Monomers
Frank J. Glavis - Rydal PA David H. Clemens - Willow Grove PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C07C 8504
US Classification:
564288
Abstract:
This invention relates to vinylbenzyl and crosslinking bis-(vinylbenzyl) monomers for use in the preparation of polymers, especially ion exchange resins, and to methods for the preparation of the monomers and polymers. It is particularly concerned with the preparation, polymerization, and use of new nitrogenous monomers as crosslinking agents and/or function-introducing agents.
Method Of Purifying Condensate Waters For Steam Regenerating Equipment
David H. Clemens - Willow Grove PA Marvin J. Hurwitz - Elkins Park PA Robert W. Walker - Fort Washington PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C02F 142 C02F 164
US Classification:
210684
Abstract:
Strong base ion exchange resins derived from crosslinked vinylbvenzyl chloride polymers are particularly suitable for purifying condensate waters for steam regenerating equipment. Preferred embodiments utilize gellular anion exchange resins to remove corrosion products from boiler condensate waters.
James H. Barrett - Cornwells Heights PA David H. Clemens - Willow Grove PA
Assignee:
Rohm and Haas Company - Philadelphia PA
International Classification:
C08J 940 C08J 942
US Classification:
531139
Abstract:
Hybrid copolymers are prepared by at least partially filling the macropores of a macroreticular copolymer with a guest crosslinked copolymer of either the same monomers or a copolymer of different type monomers. The hybrid copolymers can be readily converted into ion exchange resins. Such resins have markedly improved physical and chemical properties, including improved ion exchange properties.
Name / Title
Company / Classification
Phones & Addresses
David C. Clemens Principal
D & I Landscaping Landscape Services
8015 Hammond Rd, Cheltenham, PA 19012
David R. Clemens
DEC FARMS, LTD
David A Clemens
CARAPACE MANAGEMENT LIMITED
David Clemens
BEREAN COMMUNITY CHURCH, INC
David W. Clemens
PAT & DAVE'S TOWING, LLC
David W. Clemens
DC'S AUTO CARE, LLC
David W. Clemens
CLEMENS PROPERTY INVESTMENTS, LLC
David Clemens Vice-President
ROBINSON'S AMBULANCE & OXYGEN SERVICE, INC Ambulance Service
3710 Commerce Dr SUITE 1006, Halethorpe, MD 21227 664 Blue Pt Rd, Holtsville, NY 11742 6314472800
Feb 2009 to Present Electronics technicianJERRY'S TRANSMISSIONS Philadelphia, PA Jan 2002 to Feb 2009 Transmission technicianL&M ENGINES Hatboro, PA May 2000 to Dec 2001 Engine technicainMercedes Benz Hatboro, PA Jul 1999 to Apr 2000 DMC FOREIGN CAR SPECIALISTPHILADELPHIA AUTOMOTIVE TECHNOLOGIES Philadelphia, PA Mar 1999 to Jun 1999 Rebuild technicianBOSTON MARKET valley, PA, US Apr 1997 to Apr 1999 Granted the title employee managerExterior and Interior Abington, PA Apr 1996 to Oct 1996 STUDENT PAINTERSJERRY'S TRANSMISSIONS Philadelphia, PA Mar 1995 to Sep 1995 Transmission technician
Education:
ITT TECHNICAL INSTITUTE Bensalem, PA Dec 2007 to Dec 2009 TechnologyEASTERN CENTER FOR ARTS AND TECHNOLOGY Willow Grove, PA Sep 1998 to Jun 2000 certificate in automotiveCHELTENHAM HIGH SCHOOL Wyncote, PA Sep 1996 to Jun 2000 diploma in shop and art
But Sen. David Clemens, R-West Fargo, worried that without the passage of Senate Bill 2344, the state would revert back to the initiated measure, which didn't include language to decriminalize the product.
Date: Feb 16, 2017
Category: Health
Source: Google
Tomah VA hospital dentist may have exposed veterans to HIV, Hepatitis
"When I first started doing dentistry in 1980, that was considered acceptable, but it really isn't considered that anyway. The only way to make sure you've killed all the bacteria is to put it through a sterilization or an auto-clave," said Dr. David Clemens.
Date: Dec 02, 2016
Category: Health
Source: Google
50 years after the University of Texas Tower shooting
"Liberal critics deplore that the new law takes effect on the anniversary of the 'gun-related' Texas Tower massacre," David Clemens, a Monterey Peninsula College professor, wrote earlier this month in a National Review blog post, "but the timing couldn't be more appropriate."
bridge was closed at midnight Friday so crews could install a $30 million concrete and metal barrier, and was slated to reopen at 4 a.m. Monday, Golden Gate District spokeswoman Priya David Clemens said. The 11,500-foot movable barrier, erected to prevent head-on collisions, was completed at 9:30 p.
Golden Gate District spokeswoman Priya David Clemens said the bridge reopened at 9:30 p.m., six and a half hours early. The bridge had been closed since midnight Friday night and was scheduled to reopen at 4 a.m. Monday so construction crews could install the 11,500-foot, $30 million barrier, which During the closure, crews installed more than 3,500 individual units, each weighing 1,500 pounds that are pinned together to form a chain. David Clemens said the barrier will be used to manage traffic flow, similar to the plastic pylons that have been used on the bridge since 1962.Zipper trucks will shift the barrier to create the appropriate lane configuration, which will continue in their usual pattern, David Clemens said in a statement. Clemens said crews may continue to train with the zipper truck overnight but the bridge will be set up with a four-lane southbound and a
Date: Jan 12, 2015
Source: Google
Golden Gate Bridge re-opens hours ahead of schedule
In addition to installing the metal and concrete barrier, crews modified the merge in the southbound lanes of U.S. Highway 101 on the Waldo grade, from the Waldo Tunnel approaching the bridge, David Clemens said.
Date: Jan 12, 2015
Category: U.S.
Source: Google
Golden Gate Bridge closes to install crash obstacle that is new
"The board of directors had been searching for a long time to discover a way to avert head-on collisions and enhance safety, but we didn't have the funds, and the technologies didn't exist," David Clemens mentioned.
Date: Jan 10, 2015
Category: U.S.
Source: Google
Golden Gate Bridge closing for safety upgrade this weekend
They have carried out little to avoid crashes. Given that 1970, there right here have been 128 head-on collisions on the bridge, resulting in 16 deaths, Golden Gate Bridge spokeswoman Priya David Clemens stated.