Popular Posts

Tuesday, 25 March 2014

Industrial process of bio butanediol – from renewable sources

Computational fluid dynamics for chemical reactor design

HOT CHEMISTRY JOBS OF THE WEEK


BASF
BASF

Lab Technician I

BASF Corporation- Huntsville, UNITED STATES

Job Description

BASF Corporation are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.BASF Corporation make the chemistry and technology used in vehicle catalytic convertors and other environmentally smart products. Read more & apply

BioAmber
BioAmber

Senior Engineer

BioAmber- Houston, UNITED STATES

Job Description

Reporting to the Vice President, Catalysis , the Senior Engineer will be responsible for executing, and reporting experimental programs for further analysis toward the goal of new/improved commercial catalysts and catalytic processes.The Senior Engineer should have an MSChE or BSChE degree in chemical engineering.Strong knowledge of laboratory and pilot plant scale reactors.Industrial approach to selecting, testing and improving heterogeneous catalysis.Senior engineer is expected to interact effectively with other scientists, engineers, and business people within the company.Read more & apply

BASF
BASF

Chemical Processor

BASF Corporation- Elyria, UNITED STATES

Job Description

BASF Corporation at Elyria, OH manufacturing site is seeking candidates for the position of chemical processor. BASF Corporation are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.Read more & apply

Johnson Matthey Plc
Johnson Matthey Plc

EHS Manager

Johnson Matthey Plc- Billingham, UNITED KINGDOM

Job Description

Johnson Matthey Plc are looking to recruit a highly motivated EHS Manager to provide leadership on site EHS strategy and to develop effective working practices that supports the continuous improvement in EHS culture and performance throughout the Chilton site.Reporting to the Site Manager, you will lead a team of EHS Advisors to provide best practice EHS guidance and risk management to a class leading standard, in support of a diverse range of activities such as capital project design and construction, technology development, research and site operations, health management and environmental protection.Read more & apply

The Dow Chemical Company
The Dow Chemical Company

Analytical Chemist

The Dow Chemical Company- Collegeville, UNITED STATES

Job Description

The Dow Chemical Company has an opening for a R&D; Analytical Chemist in Collegeville, PA supporting Dow Consumer & Industrial Solutions (DC&IS;). This position is for our future technology facility in Collegeville, PA (expected to begin work in our Spring House, PA facility and transition to new facility in the 2nd half of 2014) with an initial short training period in Buffalo Grove, IL. The selected candidate will be part of a diverse technical team responsible for the innovation of new products and the support of current operations & technologies associated with the Industrial Care market segment.Read more & apply

wacker
wacker

Chemical Operator Trainee

Wacker Chemical Corporation- Calvert, UNITED STATES

Job Description

The chemical operator trainee is an hourly union rated position. The work schedule will be seven day/twelve hour rotating shift. The position is responsible for performing chemical operator duties involved with the manufacture of VAE dispersions (vinyl acetate/ethylene emulsions).Read more & apply

Cytec Industries Inc.
Cytec Industries Inc.

Operations Engineer

Cytec Industries Inc.- Mount Pleasant, UNITED STATES

Job Description

Cytec Industries Inc. is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, or protected veteran status.Read more & apply

Avantor Performance Materials
Avantor Performance Materials

Quality Engineer

Avantor Performance Materials- Phillipsburg, UNITED STATES

Job Description

The Quality Engineer provides support to manufacturing with quality related issues, including but not limited to customer complaints, Out of Control/Out Of Specification investigations, CAPAs, Process Validations, Batch Production Record, Work Instruction and Procedure revision and Management of Change.Read more & apply

Evonik Industries AG
Evonik Industries AG

Director (m/f) Project Business EMEA

Evonik Industries AG- Darmstadt, GERMANY

Job Description

The Director Project Business Injectable Formulation & Manufacturing Services ensures sustainable growth of the Evonik Health Care business by strengthening the project pipeline of the Pharma Polymers & Services activities in the EMEA region.Read more & apply

NOVA Chemicals Corporation
NOVA Chemicals Corporation

Risk Scientist

NOVA Chemicals Corporation- Calgary, Alberta, CANADA

Job Description

This role is critical to the focused operation of NOVA Chemicals Corp. in our on-going effort to manage the risk to the public and company in our ongoing operation. As part of the Corporate Process Safety team the Risk Scientist/Engineer will work with the operating facilities and the wealth of information and techniques available in academia and other domains. Expertise will be required to understand and communicate what acceptable risk is with a particular focus on both clarity, consistency and communication in methodologies for modeling.Read more & apply

Wednesday, 19 March 2014

Article on Robert Boyle postulated Boyle’s law

Robert Boyle, (25 January 1627 – 31 December 1691) ” was an Anglo - Irish natural philosopher, chemist, physicist, and inventor..Although his research clearly has its roots in the alchemical tradition, Boyle is largely regarded today as the first modern chemist, and therefore one of the founders of modern chemistry, and one of the pioneers of modern experimental scientific method. He is best known for Boyle’s law, which describes the inversely proportional relationship between the absolute pressure and volume of a gas, if the temperature is kept constant within a closed system. Among his works, The Sceptical Chymist is seen as a cornerstone book in the field of chemistry

Boyle was born at Lismore Castle on 25 January 1627, the youngest son of Richard Boyle, first Earl of Cork, an ‘adventurer’ who made his fortune in Ireland and who, as Lord High Treasurer of that country, was one of the richest and most influential men in Britain. Boyle’s background was thus a wealthy, aristocratic one, and he undoubtedly carried the marks of this for the rest of his life, displaying an patrician demeanour to which his contemporaries almost automatically deferred. Indeed, one recent author, Steven Shapin, has argued that it was primarily to this that the extreme trustworthiness that contemporaries imputed to his science should be attributed. Boyle’s upbringing was fairly conventional. He was educated partly at home and partly at Eton College, completing his education by travelling to France, Italy and Switzerland, where he spent several months and where he received further instruction. It was during these continental travels that Boyle had a conversion experience, occasioned by an awe-inspiring thunderstorm, which he recounted in his autobiography. This had a formative influence on his entire subsequent life; his profound religiosity, the subject of much comment by contemporaries, is equally, if not more, important in understanding his later intellectual personality than his aristocratic background. Not only did Boyle’s deep theism inform his outloook in natural philosophy, as in life in general; in addition, it may be argued that the obsessiveness which he showed in his pursuit of his goals grew directly out of the religious imperatives which dominated his life…."

CPhI 2014 Events


CPhI India 2014
CPhI India 2014

CPhI India 2014

CPhI India and its co-located events are the largest and most comprehensive pharmaceutical industry events in South Asia. As the pharma industry is increasingly looking towards India for high quality, low cost pharma solutions, this event is the perfect place for companies to pick up on the latest trends and innovations the market has to offer. The event provides a platform to meet the movers and shakers in India’s pharma machinery, technology, ingredients, outsourcing and biopharma industry for a competitive advantage that will help grow your business. Read More

CPhI worldwide 2014
CPhI worldwide 2014

CPhI Worldwide 2014

CPhI worldwide 2014 gives a platform to join 30,000 senior pharma professionals from 140+ countries in one place; meet existing and new suppliers under one roof. The event provides chance to find companies across key sectors – with 2,200 exhibitors in 20 dedicated zones covering ingredients, APIs, excipients, finished dosage, contract services, packaging, machinery and more. It helps meet companies from around the world: this is the most efficient and effective way to meet suppliers from major markets like China, India and the US and emerging markets including Turkey, Russia and Malaysia.Read More

CPhI south america 2014
CPhI south america 2014

CPhI South America 2014

CPhI South America is the foremost business platform to access the growing market both in Brazil and the whole continent. Benefits of visiting CPhI America are- establish business partnerships with companies from Brazil and many other countries; find main suppliers of pharmaceutical ingredients, contract manufacturing, outsourcing services and biotechnology in one place; expand the network in the booming South American pharma market; discover South America’s outsourcing potential and bio-pharma solutions at the BioPh trail.Read More

CPhI china 2014
CPhI china 2014

CPhI China 2014

CPhI and P-MEC China bring the leading global ingredients and machinery events to China, along with co-located events representing the entire pharma supply chain with 2,600 exhibitors and over 30,000 attendees. It is a platform to meet key decision makers in pharmaceutical industry from 108 countries including China, India, US, UK, France, Italy, etc. The event helps discover potential partners who can make the connection between products and local productivity, it also helps find all major Chinese suppliers of pharmaceutical ingredients, outsourcing, equipment and bio-solutions in one location. Read More

CPhI istanbul 2014
CPhI istanbul 2014

CPhI Istanbul 2014

CPhI Istanbul will bring together local Turkish and regional drug manufacturers with global suppliers of raw materials, machinery, packaging solutions and contract services. The events will host 100+ exhibitors and is expected to attract more than 2,000 visitors from the region looking for suppliers and manufacturing partners to bring cost-competitive pharmaceuticals to their individual markets. CPhI Istanbul gives a chance to- access to the regional pharma markets with a focus on Balkan, Central Asia, Middle East and North African regions; helps meet with regional drug manufacturers and suppliers of raw materials, machinery, packaging solutions and contract services as well as attracting visitors from the region looking for suppliers and manufacturing partners to bring cost-competitive pharmaceuticals to their individual markets; be part of an event supported by a high-level conference featuring opinion leaders from government, academia and the industry. Read More

CPhI south Asia 2014
CPhI south Asia 2014

CPhI South East Asia 2014

CPhI South East Asia helps expand the professional network in the Association of Southeast Asian Nations (ASEAN) pharma market, where you will meet key decision makers and business partners who can help you capitalise on opportunities presented in this dynamic, growing market. The event helps discover potential partners who can help you tap into the pharma industry in the ASEAN region; meet existing partners face to face; meet companies you are considering doing business with under one roof. Read More

CPhI russia 2014
CPhI russia 2014

CPhI Russia 2014

CPhI Russia is hosting a range of exhibitors in the field of pharma ingredients, finished dosage, machinery, equipment, technology and outsourcing, this event is your unique opportunity to initiate business and build partnerships in the booming Russian and CIS pharma markets. Key reasons to visit CPhI Russia 2014 are – Create partnerships with leading companies and government institutions from Russia, CIS and CEE regions; gain in-depth market knowledge during the International Forum, a dedicated matchmaking programme and other networking opportunities; network with top-level executives during the matchmaking programme and other networking events.Read More

CPhI Japan 2014

CPhI japan 2014
CPhI japan 2014
CPhI Japan is a pharma relevant activity concerning Japan. CPhI Japan successfully enter highly profitable market with a wide range of companies from all areas of pharma active in Japan as well as free to attend seminars presented by governmental bodies and other important institutions. CPhI Japan opens the door to exploring new business opportunities, expanding personal networks, meeting other pharmaceutical professionals and building strong partnerships. CPhI Japan provides you with excellent opportunities to: • Generate new business and build successful relationships with key decision makers representing leading companies from all over the world. • Expand your network and meet over 14,000 visitors and exhibitors. • Get up-dated on the latest trends and developments within the pharma industry by participating in conferences, seminars and exhibitor presentations. • Find all major suppliers of pharmaceutical ingredients, the latest machinery & technology, outsourcing solutions. Read More

Tuesday, 11 March 2014

CHEMISTRY OF INKS

CHEMISTRY OF INKS

Chemistry of Inks
Chemistry of Inks
Inks can be a complex medium, composed of solvents, pigments, dyes, resins, lubricants, solubilizers, surfactants, particulate matter, fluorescers, and other materials. Solvents or carriers enable inks to be applied in the liquid state.
History of inks
The history of Chinese inks can be traced back to the 23rd century BC
The India ink used in ancient India since at least the 4th century BC
1,600 years ago, a popular ink recipe was created
In the 15th century, a new type of ink had to be developed in Europe


Ink types
Ink types

Types of Printing inks


Pad printing inks
Screen printing inks
Pad printing inks have formulations comparable to screen printing inks. Pad printing inks are formulated for rapid solvent evaporation.
Screen printing inks are designed to resist rapid evaporation so that they don’t dry in the screen.
Inks can be distinguished according to the way curing takes place

  • Air-curing inks
  • Heat-curing inks
  • Two-component inks
  • UV-curing inks
  • Oxygen-curing inks
  • Sublimation inks

Air-curing inks – is designed not to be heat set and cure at normal air temperature after printing.
Heat-curing inks require elevated temperatures for curing. The use of these ink systems is limited by the high curing temperature that the plastic must be able to withstand.
Two-component inks have the big advantage that no volatile components evaporate during curing. Pot-life after mixing is however limited.
UV-curing inks are widely used for screen-printing. The curing process is fast and environmental problems are smaller than for solvent-based systems. Small changes in ambient conditions have little influence, which makes the printing process very stable.
UV-curing inks are widely used for screen-printing. The curing process is fast and environmental problems are smaller than for solvent-based systems. Small changes in ambient conditions have little influence, which makes the printing process very stable.
Sublimation inks are heated to a temperature of about 200ºC (392ºF) during the application process, so that dyes in the ink sublime and are absorbed by the polymer surface while they are in the gas state. Sublimation inks are in the solid state at ambient temperature, like a wax, and become fluid when raised to 80ºC (176ºF) in the ink reservoir

CHEMISTRY OF PIGMENTS

CHEMISTRY OF PIGMENTS

Pigments
Pigments

Pigments appear the colors they are because they selectively reflect and absorb certain wavelengths of visible light. The appearance of pigments is intimately connected to the color of the source light. Pigments are water-and oil-insoluble natural and synthetic products that impart color to materials.



pigments
pigments

History of Pigments

Pigments and paint grinding equipment believed to be between 350,000 and 400,000 years
  • In 1200 BCE Phonecians produced Tyrian Purple
  • In 1453 CE Greeks and Romans also used pigments
  • In 1453 CE Greeks and Romans also used pigments
  • In 16the centaury Spain people used pigments
  • In 17th centaury Dutch master Johannes Vermeer used pigments for paintings
  • In 18th century Chrome Yellow, Cobalt Blue were came to usage
  • In 19th centaury Cadmium Red came into existence
  • In 20th centaury Hoechst company introduced the Hansa yellow pigment

Natural Plant pigments
Natural Plant pigments

Classification of Pigments

Biological pigments – used in biological process like Camouflage, Mimicry, Aposematism and Sexual selection.
Examples: chlorophyll; canthaxanthin; anthocyanin; rhodopsin; myoglobin
Organic pigments – Pigment Red 170; Indian Yellow; indigo; Alizarin; Alizarin Crimson
Inorganic pigments – carbon black; Cadmium Yellow; Cadmium Orange; Cadmium Red; Prussian Blue; Venetian red; Chrome Yellow; Naples Yellow; titanium white

Follow by Email