Process for producing bromomethylated polyphenylene ethers

Details Process for producing bromomethylated polyphenylene ethers Process for producing bromomethylated polyphenylene ethers

1984-09-20

1985-12-17

Pertilla, Theodore E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525391, 525392, 525395, 525396, 525397, 525905, C08L 7104, C08G 6548

Patent

active

045593922

ABSTRACT:
Polyphenylene ethers, especially poly(2,6-dimethyl-1,4-phenylene) ether, are reacted, in the presence of carboxylic acids, with formaldehyde and hydrogen bromide, whereby 0.02-1 bromomethyl group is introduced, per phenyl nucleus, and a product is obtained containing up to 37.6% by weight of bromine, and losing 2-40% of its weight by thermogravimetric analysis at 250.degree.-325.degree. C. The resultant bromomethylated polyphenylene ethers are suitable, inter alia, as flame retardants.

REFERENCES:
patent: 3075944 (1963-01-01), Wick et al.
patent: 3141860 (1964-07-01), Sauer et al.
patent: 3250739 (1966-05-01), Sauer et al.
patent: 3306874 (1967-02-01), Hay
patent: 3306875 (1967-02-01), Hay
patent: 3334069 (1967-08-01), Borman
patent: 3658945 (1972-04-01), Nakashio et al.
patent: 3663654 (1972-05-01), Haaf
patent: 3817919 (1974-06-01), Nakashio et al.
patent: 3883481 (1975-05-01), Kopetz et al.
patent: 4058504 (1977-11-01), Yonemitsu et al.
Ullmanns Encyklopadie der technischen Chemie, p. 18.
Kunststoff-Handbuch-Duroplaste, p. 22.
Houben-Weyl, Methoden der Organischen Chemie, pp. 484-487.

Affiliated with

Also associated with

Rating

Process for producing bromomethylated polyphenylene ethers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing bromomethylated polyphenylene ethers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing bromomethylated polyphenylene ethers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2175609