May 8, 2002

New Chlorinated Polypropylene Primer
- Makes Repairing and Refinishing Rebuilt Auto Bumpers a Breeze -

Nippon Paper Industries Co., Ltd.

Tokyo, May 8, 2002 -Nippon Paper Industries Co., Ltd., Japan's leading paper and pulp manufacturing firm with major research and production operations in chemical products and also a member of the Nippon Unipac Holding Group, today announced that it has successfully developed a new addition to their SUPERCHLON® line of chlorinated polypropylene products: SUPERCHLON S-3199, a new easy to apply, low temperature cure primer for repairing and refinishing auto bumpers and a variety of other products.
Some 5 million used autos are casually dumped annually in Japan, and presently the government is proactively preparing to enact the new Automobile Recycle Law (submitted to the Japanese Diet on April 9) that will undoubtedly accelerate the pace of the reuse and recycling of used auto parts.
Until now, polypropylene substrate surfaces such as auto bumpers had to be sanded before refinishing and the adhesion difficulties of the materials generally required treatment with toulene or xylene or another highly soluble, though not environmentally friendly, solvent when repairing or refinishing. In addition, it has also been necessary to cure the clear coat in a large drying furnace at 80℃ - 120℃.
Nippon Paper Industries SUPERCHLON® series of chlorinated polypropylene products have excellent adhesion qualities for the generally adhesive-unfriendly plastics such as polypropylene resins, polypropylene primers for auto bumpers and other similar products, and for a variety of other uses.
SUPERCHLON S-3199 primer provides an adhesive performance for a refinished auto bumper that merely requires a clean water rinse or that the substrate surface be wiped with an isopropyl alcohol soaked cloth. What's more: SUPERCHLON S-3199 primer allows a low room-temperature cure process of only 30℃ - 40℃, thus eliminating the need for a large curing furnace. Also, it is a dual-purpose primer for refinishing wood-based products as well as other exterior and interior plastics.
Nippon Paper Industries expects to produce 200 tons with sales target of 200 million yen in the fiscal year ending March 31, 2004.