Title: Suspension copolymer composition

Abstract: Self-extinguishing, thermoplastic polymer compositions are prepared by the intimate admixture of a thermoplastic polymer with a copolymer of a halogen containing ethylenically unsaturated monomer and a phosphorus containing vinyl monomer, particularly a bis(hydrocarbyl)vinylphosphonate. The thus modified thermoplastic polymers display a high degree of flame retardance without any substantial changes in their physical properties including, for example, their clarity and hardness and the resulting compositions may be safely employed in any application requiring their possible exposure to fire or high temperatures.

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Inventors: Kraft, Paul (Spring Valley, NY, US)
Altscher, Siegfried (Monsey, NY, US)

Application Number: 548060
Filing Date: 1975-02-07
Publication_date: 1976-03-09
Assignee: Stauffer Chemical Company (Westport, CT)
Primary Class(es): 524/807 260/DIG24, 524/506, 524/508, 524/528
Other Classes:
US Patent Ref:

3489706	Jan, 1970	Mikofalvy	260/29.
3682871	Aug, 1972	Mikofalvy et al.	260/29.
3691127	Sep, 1972	Kraft et al.	260/29.

Other Refs:
Primary Examiner: Phynes, Lucille M.
Assistant Examiner:
Attorney: Fennelly; Richard P.