Our History

The diversity of our past makes us strong.

For more than 100 years we have been helping our customers improve their profitability by helping them solve their process and water treatment challenges. Learn more about our rich history, which includes legacy companies such as Drew, Betz Laboratories, Hercules, Stockhausen and Ashland Water Technologies, as well as our recent acquisitions and milestones as Solenis.

May

2018

Solenis opens new manufacturing plant in Zhuhai City, Guangdong Province, China.
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July

2017

Solenis acquires Nopco Colombiana S.A., expanding its ability to serve the process and water treatment markets in Central and South America.
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May

2017

Solenis opens new technology center in Paulínia, São Paulo, Brazil, expanding its ability to serve customers in Latin America.
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August

2016

Solenis granted U.S. and European patents for its Biobond℠ technology, an innovative program that improves the sustainability of recycled paperboard.
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April

2016

Solenis acquires Dutch company Lostris International B.V. and Wester Blend B.V., expanding its product offering to the pulp and paper industry and its geographic presence.
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October

2015

EHS Today magazine names Solenis one of America’s safest companies.
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April

2015

Solenis opens its world headquarters in Wilmington, Delaware.
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February

2015

Solenis acquires Clearwater Specialties LLC, expanding its offering to the tissue and towel markets.
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September

2014

Solenis granted a U.S. patent for its corn oil extraction aids, which improve the separation of corn oil during ethanol production.
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November

2008

Ashland acquires Hercules Incorporated, positioning itself in the top tier of global specialty chemical companies.

October

2006

Hercules celebrates the 75th anniversary of its Research Center in Wilmington, Delaware.
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October

1998

Hercules acquires BetzDearborn Inc., establishing itself as the leading global producer of specialty papermaking chemicals.

March

1996

Betz Laboratories acquires Grace Dearborn water treatment and process chemicals business from W.R. Grace & Co., launching BetzDearborn Inc.

October

1957

Hercules files the first patent application for PAE resins, ushering in 60 plus years of wet-strength resin use in papermaking.
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July

1924

Ashland Refining Company founded as the refining arm of the Swiss Oil Company by Paul G. Blazer.

March

1907

Founded by E. F. Drew in Boston, Massachusetts, E. F. Drew & Company started out in the vegetable oil business but soon added a water treatment line focused on boilers.