Dispersing stabilizer

Details Dispersing stabilizer Dispersing stabilizer

1997-04-23

1998-12-15

Mulcahy, Peter D.

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

Synthetic resins

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

525 59, 525 60, 5253289, 526330, C08F 1606

Patent

active

058498400

ABSTRACT:
A dispersing stabilizer including (A) a polyvinyl alcohol resin containing oxyalkylene groups and having a surface tension of 35 to 55 dyne/cm at 20.degree. C. as a 1% by weight aqueous solution, or said resin and (B) a water-soluble polymer or a polyvinyl alcohol resin having a low degree of hydrolysis and a low degree of polymerization. When using the dispersing stabilizer of the present invention, both of a porosity and a bulk density of a polyvinyl resin particle can be improved at the same time, and, in addition, a distribution of particle size and a uniformity of porosity can be further improved.

REFERENCES:
patent: 2844571 (1958-07-01), Broderick
patent: 3033841 (1962-05-01), Germain
patent: 3218281 (1965-11-01), Rees
patent: 3386982 (1968-06-01), Gordon
patent: 4075411 (1978-02-01), Dickstein
patent: 4618648 (1986-10-01), Marten
patent: 4675360 (1987-06-01), Marten
patent: 5070140 (1991-12-01), Lind et al.

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