SEQUENTIALLY PRODUCED ALKYL ACRYLATE POLYMERS BLENDED WITH POLY(VINYL HALIDES)

• US 3,833,686 A
• Filed: 09/10/1971
• Issued: 09/03/1974
• Est. Priority Date: 10/09/1969
• Status: Expired due to Term

• Current Assignee: Graham R, Grochowski R, Whang J
• Original Assignee: Graham R, Grochowski R, Whang J
• Inventors: GROCHOWSKI R, GRAHAM R, WHANG J
• Application Number:
  US05/179,561
• Time in Patent Office: 1,089 Days
• US Class Current: 525/80
• CPC Class Codes: C08F 265/04 on to polymers of esters
• CPC Class Codes: C08L 2666/24 Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
• CPC Class Codes: C08L 27/02 not modified by chemical after-treatment
• CPC Class Codes: C08L 27/06 Homopolymers or copolymers of vinyl chloride
• CPC Class Codes: C08L 51/003 grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds C08L51/04, C08L51/06 take precedence

Abstract

PROCESSING AIDS OF IMPROVED DISPERSIBILITY IN LOW MOLECULAR WEIGHT POLY(VINYL CHLORIDE) COMPOSITIONS COMPRISE A SEQUENTIALLY PRODUCED POLYMER CHARACTERIZED BY 1 TO 30 WEIGHT PERCENT OF (A) A FIRST RELATIVELY SOFT STAGE CHARACTERIZED BY A GLASS TRANSITION TEMPERATURE OF 60*C. OR LESS; AND 99 TO 70 WEIGHT PERCENT OF (B) A FINAL SUBSTANTIALLY THERMOPLASTIC STAGE POLYMERIZED IN THE PRESENCE OF A PRODUCT CONTAINING THE FIRST STAGE, AND IN INITIAMATE CONTACT WITH THE FIRST STAGE AND FURTHER CHARACTERIZED IN THAT IF THE MONOMER OR MONOMERS WERE POLYMERIZED IN THE ABSENCE OF THE PRODUCT OF THE FIRST STAGE, A POLYMER WOULD BE FORMED HAVING A GLASS TRANSITION TEMPERATURE OF 25*C. OR GREATER.

Claims