Ultra-violet stabilized polyvinyl chloride resins and methods to

Details Ultra-violet stabilized polyvinyl chloride resins and methods to Ultra-violet stabilized polyvinyl chloride resins and methods to

1997-07-17

1999-09-21

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C08K 53432

Patent

active

059555211

ABSTRACT:
Ultra-violet stabilized polyvinyl resins, such as polyvinyl chloride, are disclosed. The ultra-violet stabilized polyvinyl resins comprise polyvinyl resins and a stabilizer comprising a benzylidene malonic ester of 1,2,2,6,6-pentamethylpiperidinol or its derivatives. The stabilizer can be added to or dispersed within the polyvinyl resins prior to any objects or articles being formed from the resins. Also disclosed is a method to impart ultra-violet stabilization to polyvinyl resins which includes the step of adding to or dispersing within the polyvinyl resins, a stabilizer comprising a benzylidene malonic ester of 1,2,2,6,6-pentamethylpiperidinol or its derivatives. The invention further includes the addition of an ultra-violet absorber such as ethane diamine, n-(2-ethoxyphenyl)-n.sup.1 -(4-ethyl phenyl) to the polyvinyl resin composition.

REFERENCES:
patent: 5710240 (1998-01-01), Steinmann
"Additives for Plastics and Coatings: Sanduvor PR-31," Clariant Technical Bulletin, 6-147 (1996), pp. 1-16.
"Additives for Coatings: Sanduvor VSU Powder," Clariant Technical Bulletin, 2-150 (1996), pp. 1-8.
VP Sanduvor PR-31: Physical Properties.

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