Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1986-07-16
1988-03-22
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524291, 524302, 525303, C08K 509, C08K 515
Patent
active
047329238
ABSTRACT:
A butadiene polymer composition having incorporated the following stabilizers therein:
A phenolic compound (I) of the formula: ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.4 alkyl group, and a sulfur-containing compound (II) represented by the general formula, ##STR2## wherein R.sub.2 and R.sub.3 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, and R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, wherein the weight ratio of (I) to (II) is 1 to 0.5-10. The butadiene polymer composition of the present invention is quite effective to prevent gel formation caused by heat, especially in the absence of oxygen.
REFERENCES:
patent: 3984372 (1976-10-01), Cottman
patent: 4525514 (1985-06-01), Yachigo et al.
patent: 4576734 (1986-03-01), Ishii et al.
Okita Taisuke
Sasaki Manji
Takahashi Yukoh
Takata Takeshi
Yachigo Shin-ichi
Mulcahy Peter D.
Schofer Joseph L.
Sumitomo Chemical Co,. Ltd.
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