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# OAR Box 1413 Prepped by Ollie Stewart



## Document

Number: 

# 23 ) 11-1-2 3 Docket Number: 

# A-94-5 2

Printed 7/9/2008 3:11:21 PM

Sheet 23 of 114P. 2 

## A-B4-6 2 \ *



# Jun e 1995 | Li * < Volum e 3 9 Numbe r6 ISS N 0034-361 7 Publishe d b y Elsevie r 

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# Focu s o n Franc e Glas s makers ' strateg y fo r Europ e 

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# DS M halve s styren e emission s wit h Inser t STYREN Eemission s dur in g hand-la y an dspray-u p application s ca nb e cu t

i n half thank s t o ne w tech nolog y fromDSM Resins . Ope nmouldin g contri bute s t o th e mai nsourc e o f styren e emissio ni n glas s fibre reinforce dplas ti c (GRP ) processing . Dur in g th e application_olgel coa t 70-8 0 g/m 2 of_styr - .e_ne__ca n evaporat e (10 - .

- J_23£ L _j_£jhe__jotal_emis - ' SiQQs) . Standar dlo w styr en e emissio n(LSE) resin s contai nfilmformin g addi tive s whic hreduc e emis sions . However , thes e resin s ar e onl y effectiv e durin g th e stati c o r

curin g phase . The_amo_unt_o f stj*rej-__L_jjdeased._d_urjn g t h e dynami c phases , "Sprayin g j^jx_lHng_i>ut , remains ' the—same . I t

i s -dnfing^thes e stage s tha t considerabl e emission s occur . DSM , therefore , se t ou t t o reduc e styren e durin g th e dynami c phas e an dsay s tha t

i t ha s accom plishe dthi s throug hche mica l modificatio no f

th e resin . Th e resultin g resin s launche da t

JE C ar e calle d Insert , a nacrony mfo r INtrinsi c Styren e Emis sio nReductio nTechnol ogy . Thes e mak e us e o f proprietar y formulatio n technolog y whic hlower s styren e emission . Modifi cation s mad e insid e th e resi nresul t

i n lowe r styr en e conten t

compare d wit hstandar dLS

Eresins , say s DSM . Th e ne w Inser t

series , calle dSynolit e 5500 , cur rentl y include s thre e grades . Synolit e 5520-1- 1 i s apre-accelerate dnon thixotiopi c version . Syno lit e 5520-E- l i s apre accelerate dnon-thixotro pi c LS Eresi nwhic hmake s 10 0 80 60 4 0 20 0 Styren e emiuio n(% )

HuSHtf! . D Curin g ESConiolidatio

n S Spra y pbaie

lunoar a li e 5520- M 5520-P- l Styrene emission during spray up. us e o f th e Inser t

technol og y an dstandar dfil m formin g additive s t o re duc e styren e emissio n throughou t

th e entir e fab ricatio nprocess . Th e workhors e o f

th e serie s i s expecte dt o b e Synolit e 5520-P-l , apre-acceler ate dthixotropi c LS

Ere sin . Othe r

tha nth e styren e content , th e prop ertie s o f thi s resi nar e sai d t o b e betwee nlo w an d mediu mreactiv e orthophthali c resins . N o concession s ar e mad e i n mechanica l properties , an dshrinkag e o ncurin g i s 1.5-2 % les s tha nwit h standar dorth o versions . T o demonstrat e th e styren e emissio ncharac teristic s o f

it s resins , DS

M point s t o th e result s o f

a compariso nmad e be twee nastandar dspray u p orth o resi nwit han d withou t a nLS Esyste man d Synolite-P- 1 an dSynolite-I 1 . Measurement s wer e carrie dou t

durin g th e construction. ^ a4ami- . nate~b y measurin g th e styren e concentrations ^ ^Tifi~a~photojonl2aTio n dJtec^_in]jEeIIixEiuit _ duct . Th e proces s wa s divide dint o thre e steps : th e cumulativ e sprayin g operation ; th e tota l tim e o f consolidation ; an ddi e laminat e curing . Th e figur e represent s thes e mea surement s graphically . Wha t ca nb e see ni s tha t Synolite-P- 1 produce s 50 % les s styren e emissio ntha n bot hth e standar dan dLS E orth o resi ndurin g th e sprayin g operation . Dur in g laminat e curing , th e styren e emissio no f Synolite-P- 1 i s compar abl e t o tha t

o f th e stan dar dorth o LSEresin . Synolite-I- 1 als o give s a 50 % reductio ni nemis sio ndurin g sprayin g bu t ha s asomewha t

highe r emissio ndurin g curin g becaus e o f

th e absenc e o f aconventiona l LS Esyste n DS M i s s o sur e o f

it technology , itjs_willin g t

< perfor mstyren e emissio i mjgasurement s a t

it s cu s tomer s premises . JTi t pric e o f th e ne w resin ; wil l b e som e 15 % highe r tha nstandar dorth c grades , whic hi s t o reflec t th e technolog y that-ha s gon e int o researchin g th e comple x formulation , rawjnaterials , etc . How ever , DS M say s tha t

th e highe r pric e wil l b e ba lance di nterm s o f

th e benefit s i t

ca nbring . Fo r example , les s extractio n equipmen t

wil l b e neede dt o cop e wit hstyr en e emissions , an dles s mone y wil l b e spen t

o n ensurin g al l ne w legisla tio ni s met . DS M no w think s tha t it_can___e___uo_Lih_L_styren e conten t further . It-plan s t_a_gxtend ~ th e rang e o f Inser t resin s wit hgenera l pjurposegrades , isopfitfia li c resins , gel_cflaLjbas e renin s and_j-iny.l__.e s te r resins . Limite dquantitie s "bf - viny l este r

resin s ar e alread y availabl e fo r fiel dtrials . Filamen t windin g i s als o bein g studie dwit havie w t o futur e products . DSM Resins bv; tel: +31-38-569408; fax: +31-38-569230. 

# Quic khardenin g agen t A CURIN Gagen t whic hi s reporte dt o spee du p th e hardenin g o f

polyeste r moulding s i s bein g mar kete db y Japanes e firm Nippo nOil s & Fat s Co . Percur e W O i s effectiv e i n th e processin g tempera tur e rang e o f

70-100°C . Excellen t hardnes s i s re porte di nashor t

tim e fo r th e productio no f hig h qualit y products . I t

i s particularl y recom mende dfo r

th e cas t mouldin g o f

artificial mar bl e fro mlo w temperatur e shee t mouldin g com poun d(SMC ) fo r

article s suc ha s bat htubs . Nippon Oils & Fats Cofax: +81-3-3283-7120. Reinforce dPlastic s Jun e 199

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