Polycarbonates of substituted cyclohexylindenebisphenols

• US 5,034,458 A
• Filed: 08/09/1990
• Issued: 07/23/1991
• Est. Priority Date: 08/22/1989
• Status: Expired due to Fees

• Current Assignee: Bayer AG
• Original Assignee: Bayer AG
• Inventors: Freitag, Dieter, Idel, Karsten-Josef, Serini, Volker, Grigo, Ulrich
• Primary Examiner(s): Bleutge, John C.
• Assistant Examiner(s): BUTTNER, DAVID J
• Application Number:
  US07/565,290
• Time in Patent Office: 348 Days
• Field of Search: 528/196, 528/204, 525/67, 525/92, 525/146, 525/147, 525/433, 525/439, 525/453, 525/462, 525/464, 525/469
• US Class Current: 525/67
• CPC Class Codes: C08G 64/06 not containing aliphatic unsaturation
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

Aromatic polycarbonates having weight average molecular weight M_w of at least 10,000 which contain bifunctional carbonate structural units corresponding to general formula (I): ##STR1## wherein R¹, R², R³, R⁴ independently represent hydrogen, C₁ -C₁₂ hdyrocarbon or halogen radicals; and

R⁵, R⁶, R⁷, R⁸ and R⁹ independently represent hydrogen or C₁ -C₁₂ hydrocarbon radicals, one or R⁵ and R⁹ representing hydrogen and the other C₁ -C₁₂ hydrocarbon radical;

in amounts of from 100 to 1 mole % based on the total amount of difunctional carbonate structural units in the polycarbonate were found to be useful for thermoplast processing of compositions which are characterized by their improved toughness and high heat deflection temperature.

Claims

1. A thermoplastic molding composition comprising

(A) an aromatic polycarbonate resin having a weight average molecular weight M_w of at least 10,000 containing bifunctional carbonate structural units corresponding to ##STR14## wherein R¹, R², R³, R⁴ independently represent hydrogen, C_1l -C₁₂ hydrocarbon radical or halogen;

and

R⁵, R⁶, R⁷, R⁸ and R⁹ independently represent hydrogen or C₁ -C₁₂ hydrocarbon radical, one of R⁵ and R⁹ representing hydrogen and the other C₁ -C₁₂ hydrocarbon;

in amounts of from 100 to 1 % based on the total amount of difunctional carbonate structural units in the polycarbonate.

2. The composition of claim 1 further comprising

(B) from 0 to 99 weight % of at least one amorphous thermoplastic different from (A) having a glass transition temperature of from 40°

to 300°

C.;

(C) from 0 to 99 weight % of at least one partially crystalline thermoplastic having a melting point of from 60°

to 400°

C.;

(D) from 0 to 99 weight % of at least one rubber;

(E) from 0 to 99 weight % of at least one graft polymerisate comprising at least one rubber having at least one grafted polymer of at least one monomer selected from vinyl compounds, acrylic and methacrylic compounds and maleic acid derivatives;

the sum of (A), (B), (C), (D) and (E) being 100 weight %.