Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-08-21
1999-07-06
Yoon, Tae
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523122, 5253302, 526240, C09J20102, C08F 842, C08F23004
Patent
active
059198400
ABSTRACT:
This organosoluble (meth)acrylic resin composition is characterized in that it includes a polymer containing units derived from methacrylic acid which are esterified with --Ti(OR).sub.3 groups, mixed with free Ti(OR).sub.4, which represents the excess of Ti(OR).sub.4 which has been introduced for the preparation of the said polymer in sufficient quantity for the resulting composition to be organosoluble and not in gel form, R representing one of ethyl, isopropyl, n-butyl, t-butyl, 2-ethylhexyl and t-amyl. It may be the product of esterification in a solvent medium of a polymer containing units derived from methacrylic acid with Ti(OR).sub.4, the Ti/COOH molar ratio being higher than 1, preferably being between 3/1 and 10/1; or the product of radical copolymerization in a solvent medium of at least one methacrylic acid esterified with Ti(OR).sub.3 and of at least one comonomer, in the presence of Ti(OR).sub.4, in a quantity which would have corresponded to a reaction between the methacrylic acid and Ti(OR).sub.4 with a molar ratio 1/x, x>1.
REFERENCES:
patent: 4241198 (1980-12-01), Kobayashi et al.
patent: 4820748 (1989-04-01), Yamamori et al.
patent: 4835231 (1989-05-01), Yamamori et al.
patent: 4910234 (1990-03-01), Yamamori et al.
Camail Michel
Humbert Marie
Margaillan Andre
Vanhoye Didler
Vernet Jean-Louis
Elf Atochem S.A.
Yoon Tae
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